* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #fff;
    --text-color: #111;
    --text-color-subtle: #666;
    --primary-accent: #111;
    --primary-accent-hover: #000;
    --container-bg: rgba(255, 255, 255, 0.85);
    --interactive-bg: rgba(255, 255, 255, 0.85);
    --interactive-bg-hover: #111;
    --interactive-text-hover: #fff;
    --input-bg: rgba(255, 255, 255, 0.7);
    --border-color: #111;
    --error-color: #c00;
    --success-color: #0a5d2c;
    --shadow-sm: rgba(0, 0, 0, 0.04);
    --shadow-md: rgba(0, 0, 0, 0.07);
    --shadow-lg: rgba(0, 0, 0, 0.1);
    --shadow-xl: rgba(0, 0, 0, 0.13);
    --svg-bg-url: url('data:image/svg+xml;utf8,<svg width="100%25" height="100%25" xmlns="http://www.w3.org/2000/svg"><path d="M0,100 Q200,200 400,100 T800,100 T1200,100" stroke="%23111" stroke-width="3" fill="none" opacity="0.08"/><path d="M0,300 Q300,400 600,300 T1200,300" stroke="%23111" stroke-width="2" fill="none" opacity="0.06"/></svg>');
}

[data-theme="dark"] {
    --bg-color: #111;
    --text-color: #fff;
    --text-color-subtle: #aaa;
    --primary-accent: #fff;
    --primary-accent-hover: #f0f0f0;
    --container-bg: rgba(17, 17, 17, 0.85);
    --interactive-bg: rgba(17, 17, 17, 0.85);
    --interactive-bg-hover: #fff;
    --interactive-text-hover: #111;
    --input-bg: rgba(17, 17, 17, 0.7);
    --border-color: #fff;
    --error-color: #ff4444;
    --success-color: #44ff44;
    --shadow-sm: rgba(255, 255, 255, 0.04);
    --shadow-md: rgba(255, 255, 255, 0.07);
    --shadow-lg: rgba(255, 255, 255, 0.1);
    --shadow-xl: rgba(255, 255, 255, 0.13);
    --svg-bg-url: url('data:image/svg+xml;utf8,<svg width="100%25" height="100%25" xmlns="http://www.w3.org/2000/svg"><path d="M0,100 Q200,200 400,100 T800,100 T1200,100" stroke="%23fff" stroke-width="3" fill="none" opacity="0.08"/><path d="M0,300 Q300,400 600,300 T1200,300" stroke="%23fff" stroke-width="2" fill="none" opacity="0.06"/></svg>');
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 0;
    pointer-events: none;
    background: var(--svg-bg-url);
    background-repeat: no-repeat;
    background-size: cover;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    padding: 20px;
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M10,50 Q30,10 50,50 T90,50" stroke="%23e8f4f8" stroke-width="0.5" fill="none" opacity="0.3"/></svg>') repeat;
    pointer-events: none;
    z-index: -1;
    opacity: 1;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] body::before {
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M10,50 Q30,10 50,50 T90,50" stroke="%233a3a3a" stroke-width="0.5" fill="none" opacity="0.2"/></svg>') repeat;
}

.container {
    width: 100%;
    max-width: 700px;
    margin: 40px auto 0 auto;
    background: var(--container-bg);
    border-radius: 36px 80px 36px 80px/60px 36px 80px 36px;
    box-shadow: 0 12px 40px 0 var(--shadow-xl), 0 1.5px 0 var(--border-color), 0 0 0 6px var(--bg-color);
    overflow: visible;
    padding: 0 30px 40px 30px;
    position: relative;
    z-index: 1;
}

.room-header {
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-primary);
}

.room-header h3 {
    margin: 0 0 4px 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
}

.room-header h3:hover {
    color: var(--color-primary);
}

.room-status {
    font-size: 13px;
    color: var(--text-secondary);
}

.section-header {
    margin-bottom: 8px;
}

.section-header label {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-color);
}

.participants-section {
    margin: 16px 0;
}

.participants-list {
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    background: var(--input-bg);
    min-height: 60px;
    padding: 16px;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
}

.participant-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    margin-bottom: 6px;
    background: var(--container-bg);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    font-size: 13px;
    font-weight: 500;
    box-shadow: 0 1px 4px 0 var(--shadow-sm);
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.participant-item:hover {
    background: var(--input-bg);
}

.participant-item.speaking {
    border-color: var(--success-color);
    box-shadow: 0 0 10px var(--success-color);
}

.participant-avatar {
    font-size: 24px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--input-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.participant-name {
    font-weight: 600;
    color: var(--text-color);
}

.participant-status {
    font-size: 11px;
    color: var(--text-color-subtle);
}

.history-list {
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    background: var(--input-bg);
    min-height: 80px;
    padding: 16px;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
}

.history-item {
    padding: 12px 16px;
    margin-bottom: 6px;
    background: var(--container-bg);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    cursor: pointer;
    font-size: 13px;
    transition: background-color 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 4px 0 var(--shadow-sm);
}

.history-item:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
    box-shadow: 0 4px 16px 0 var(--shadow-lg);
}

.history-room {
    font-weight: 500;
    margin-bottom: 2px;
}

.history-time {
    font-size: 11px;
    color: var(--text-secondary);
}

.messages::-webkit-scrollbar {
    width: 8px;
}

.messages::-webkit-scrollbar-track {
    background: transparent;
}

.messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.participants-list::-webkit-scrollbar {
    width: 8px;
}

.participants-list::-webkit-scrollbar-track {
    background: transparent;
}

.participants-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.messages {
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    background: var(--input-bg);
    height: 200px;
    overflow-y: auto;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
}

.message-input-group {
    display: flex;
    gap: 8px;
}

.message-input-group input {
    flex: 1;
    margin-bottom: 0;
}

.btn-send {
    padding: 10px 12px;
    border: none;
    border-radius: 6px;
    background: var(--color-primary);
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-send:hover {
    background: #0b5ed7;
}

.btn-send svg {
    width: 16px;
    height: 16px;
}

.share-section {
    margin: 16px 0;
}

.hidden {
    display: none;
}

.access-request-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(8px);
}

.dialog-content {
    background: #ffffff !important;
    border: 3px solid #000000 !important;
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    padding: 32px;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 16px 48px 0 rgba(0,0,0,0.5) !important;
    position: relative;
    z-index: 1001;
    color: #000000 !important;
    text-align: center;
}

[data-theme="dark"] .dialog-content {
    background: #000000 !important;
    border: 3px solid #ffffff !important;
    color: #ffffff !important;
    box-shadow: 0 16px 48px 0 rgba(255,255,255,0.3) !important;
}

.dialog-content h4 {
    margin: 0 0 16px 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: #000000 !important;
    text-align: center;
}

[data-theme="dark"] .dialog-content h4 {
    color: #ffffff !important;
}

.dialog-content p {
    margin: 0 0 24px 0;
    color: #000000 !important;
    font-size: 15px;
    line-height: 1.5;
    text-align: center;
    font-weight: 500;
}

[data-theme="dark"] .dialog-content p {
    color: #ffffff !important;
}

.reconnect-content h4 {
    margin: 0 0 16px 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: #000000 !important;
    text-align: center;
}

[data-theme="dark"] .reconnect-content h4 {
    color: #ffffff !important;
}

.reconnect-content p {
    margin: 0 0 24px 0;
    color: #000000 !important;
    font-size: 15px;
    line-height: 1.5;
    text-align: center;
    font-weight: 500;
}

[data-theme="dark"] .reconnect-content p {
    color: #ffffff !important;
}

.room-name {
    color: #007aff !important;
    font-weight: 700;
    padding: 2px 8px;
    background: rgba(0, 122, 255, 0.1) !important;
    border-radius: 6px;
    font-family: 'Inter', monospace;
    letter-spacing: 0.5px;
}

[data-theme="dark"] .room-name {
    color: #5ac8fa !important;
    background: rgba(90, 200, 250, 0.15) !important;
}

.dialog-buttons, .reconnect-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 8px;
}

.dialog-buttons button, .reconnect-buttons button {
    width: auto;
    min-width: 100px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 700;
    border-radius: 18px 36px 18px 36px/24px 18px 36px 18px;
    border: 2px solid #000000 !important;
    background: #f0f0f0 !important;
    color: #000000 !important;
    cursor: pointer;
    transition: all 0.2s ease;
}

[data-theme="dark"] .dialog-buttons button,
[data-theme="dark"] .reconnect-buttons button {
    border: 2px solid #ffffff !important;
    background: #333333 !important;
    color: #ffffff !important;
}

.dialog-buttons button:hover, .reconnect-buttons button:hover {
    background: #000000 !important;
    color: #ffffff !important;
    border-color: #000000 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3) !important;
}

[data-theme="dark"] .dialog-buttons button:hover,
[data-theme="dark"] .reconnect-buttons button:hover {
    background: #ffffff !important;
    color: #000000 !important;
    border-color: #ffffff !important;
}

.dialog-buttons .btn-primary, .reconnect-buttons .btn-primary {
    background: #007aff !important;
    color: #ffffff !important;
    border-color: #007aff !important;
}

.dialog-buttons .btn-primary:hover, .reconnect-buttons .btn-primary:hover {
    background: #0056cc !important;
    border-color: #0056cc !important;
    color: #ffffff !important;
    transform: translateY(-2px) scale(1.02);
}

@media (max-width: 600px) {
    .container {
        margin: 20px auto 0 auto;
        padding: 0 16px 24px 16px;
        border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    }
    
    header {
        padding: 24px 0 18px 0;
        border-radius: 24px 48px 0 0/36px 24px 0 0;
    }
    
    header h1 {
        font-size: 1.6rem;
    }
    
    .call-setup, .call-interface {
        padding: 24px 20px;
        border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    }
    
    .control-group {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn-control {
        flex: none;
    }
    
    .dialog-content, .reconnect-content {
        padding: 24px;
        border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
        max-width: 350px;
    }
    
    .dialog-buttons, .reconnect-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .dialog-buttons button, .reconnect-buttons button {
        width: 100%;
        min-width: auto;
    }
}

header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 0.5rem 0;
}

header h1 {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

button i {
    margin-right: 8px;
}

.call-setup, .call-interface {
    background: var(--input-bg);
    border: 2.5px dashed var(--border-color);
    border-radius: 36px 80px 36px 80px/60px 36px 80px 36px;
    padding: 30px 25px;
    margin: 40px 0 24px 0;
    box-shadow: 0 4px 24px 0 var(--shadow-md);
    position: relative;
    z-index: 1;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

@media (min-width: 768px) {
    .call-setup, .call-interface {
        padding: 35px;
        margin-bottom: 35px;
        transform: rotate(-0.5deg);
        box-shadow: 
            8px 8px 0px var(--bg-accent),
            8px 8px 0px 3px var(--border-primary);
    }
}

@media (min-width: 768px) {
    .call-setup::before, .call-interface::before {
        content: '';
        position: absolute;
        top: -8px;
        left: 20px;
        width: 30px;
        height: 15px;
        background: var(--bg-secondary);
        border: 3px solid var(--border-primary);
        border-bottom: none;
        border-radius: 15px 15px 0 0;
        transform: rotate(5deg);
        transition: background 0.3s ease, border-color 0.3s ease;
    }
}

.quick-actions {
    margin-bottom: 25px;
}

.btn-primary {
    width: 100%;
    padding: 12px 30px;
    background: var(--interactive-bg);
    color: var(--text-color);
    border: 2.5px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
    margin: 10px 0;
    transition: box-shadow 0.2s, color 0.2s, border-color 0.2s, background 0.2s;
}

.btn-primary:hover {
    color: var(--interactive-text-hover);
    background: var(--interactive-bg-hover);
    border-color: var(--interactive-bg-hover);
    box-shadow: 0 8px 32px 0 var(--shadow-xl);
    transform: translateY(-2px);
}

.btn-secondary {
    width: 100%;
    padding: 12px 30px;
    background: var(--interactive-bg);
    color: var(--text-color);
    border: 2.5px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
    margin: 10px 0;
    transition: box-shadow 0.2s, color 0.2s, border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
    color: var(--interactive-text-hover);
    background: var(--interactive-bg-hover);
    border-color: var(--interactive-bg-hover);
    box-shadow: 0 8px 32px 0 var(--shadow-xl);
    transform: translateY(-2px);
}

.divider {
    text-align: center;
    margin: 25px 0;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-primary);
    opacity: 0.3;
}

.divider span {
    background: var(--bg-secondary);
    padding: 0 15px;
    position: relative;
}

.input-group {
    margin-bottom: 15px;
    position: relative;
}

.input-group.compact {
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 16px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
}

.input-group input, .input-group select {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text-color);
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
    font-weight: 500;
}

.input-group input:focus, .input-group select:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 4px 16px 0 var(--shadow-lg);
}

.input-group input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.settings-toggle {
    text-align: center;
    margin: 20px 0;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.settings-toggle:hover {
    background: var(--bg-accent);
    color: var(--text-primary);
}

.settings-panel {
    margin-bottom: 20px;
    padding: 15px;
    background: var(--bg-accent);
    border-radius: 12px;
    border: 1px dashed var(--color-blue);
}

.settings-panel label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.buttons {
    margin-top: 25px;
}

.btn {
    width: 100%;
    padding: 16px 24px;
    border: 2px solid var(--border-primary);
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: Helvetica, Arial, sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:active {
    transform: scale(0.98);
}

.btn.primary {
    background: var(--color-blue);
    color: white;
    border-color: var(--color-blue);
}

.btn.primary:hover {
    background: var(--color-blue);
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.btn.large {
    padding: 20px 24px;
    font-size: 18px;
}

@media (min-width: 768px) {
    .btn {
        transform: rotate(-1deg);
        border-width: 3px;
        border-radius: 20px;
        padding: 15px 30px;
    }
    
    .btn:hover {
        transform: rotate(0deg) translateY(-3px);
    }
    
    .btn.primary {
        box-shadow: 5px 5px 0px var(--border-primary);
    }
    
    .btn.primary:hover {
        box-shadow: 7px 7px 0px var(--border-primary);
    }
}

.hidden {
    display: none;
}

/* Utility classes */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Loading states */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Status indicators */
.status-connecting { color: var(--color-orange); }
.status-connected { color: var(--color-green); }
.status-error { color: var(--color-red); }

/* Remove all old decorative styles */
.logo, .divider, .help-section, .settings-toggle, .settings-panel {
    display: none;
}

/* Modern toast notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 280px;
    background: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    box-shadow: 0 8px 32px 0 var(--shadow-xl);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    padding: 16px 20px;
}

.toast-show {
    transform: translateX(0);
}

.toast-hide {
    transform: translateX(100%);
    opacity: 0;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
}

.toast-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.toast-message {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.toast-success {
    border-left: 4px solid var(--color-green);
}

.toast-error {
    border-left: 4px solid var(--color-red);
}

.toast-info {
    border-left: 4px solid var(--color-blue);
}

.toast-warning {
    border-left: 4px solid var(--color-orange);
}

.call-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px dashed var(--color-blue);
}

.room-info h2 {
    color: var(--text-primary);
    font-size: 1.4rem;
    margin-bottom: 5px;
    font-weight: 800;
    cursor: pointer;
    transition: color 0.3s ease;
}

.room-info h2:hover {
    color: var(--color-blue);
}

.room-info h2 small {
    font-size: 0.8rem;
    opacity: 0.7;
    font-weight: 400;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-orange);
    animation: pulse 2s infinite;
}

.status-dot.connected {
    background: var(--color-green);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.participant-count {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.participant-count small {
    font-size: 1rem;
}

.call-controls {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin: 24px 0;
    padding: 16px;
    border-radius: 16px;
    background: var(--input-bg);
}

.btn-call-primary {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 20px 40px;
    border-radius: 50px;
    font-size: 22px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn-call-primary:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
}

.btn-call-secondary {
    background: var(--interactive-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 2px 8px var(--shadow-md);
}

.btn-call-secondary:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-lg);
}

.btn-call-danger {
    background: #dc3545;
    color: white;
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-call-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(220, 53, 69, 0.4);
}

/* Muted state animation */
.btn-call-secondary.muted::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 24px;
    background-color: var(--error-color);
    transform: rotate(45deg);
    animation: slashIn 0.3s ease forwards;
}

@keyframes slashIn {
    from {
        transform: rotate(45deg) scale(0);
        opacity: 0;
    }
    to {
        transform: rotate(45deg) scale(1);
        opacity: 1;
    }
}

/* Hide start call button when in a call */
.in-call #startCallBtn {
    display: none;
}

/* Show call controls when in a call */
.in-call .call-only {
    display: flex !important;
}

.btn-control:hover {
    color: var(--interactive-text-hover);
    background: var(--interactive-bg-hover);
    border-color: var(--interactive-bg-hover);
    box-shadow: 0 6px 24px 0 var(--shadow-lg);
}

.btn-control.active {
    background: var(--primary-accent);
    color: var(--interactive-text-hover);
    border-color: var(--primary-accent);
    box-shadow: 0 6px 24px 0 var(--shadow-lg);
}

.btn-control.danger {
    background: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.btn-control.danger:hover {
    background: #a00;
    border-color: #a00;
    box-shadow: 0 8px 32px 0 var(--shadow-xl);
}

.btn-control.danger.active {
    background: var(--error-color) !important;
    color: white !important;
    border-color: var(--error-color) !important;
    box-shadow: 0 0 20px rgba(204, 0, 0, 0.5) !important;
    animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
    0%, 100% { box-shadow: 0 0 20px rgba(204, 0, 0, 0.5); }
    50% { box-shadow: 0 0 30px rgba(204, 0, 0, 0.8); }
}

.btn-control:active {
    transform: scale(0.95);
}

.btn-control .icon {
    font-size: 1.6rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-control .text {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
}

.btn-control.mute {
    background: var(--color-green);
    color: white;
    border-color: var(--color-green);
}

.btn-control.mute.muted {
    background: var(--color-red);
    border-color: var(--color-red);
}

.btn-control.mute.muted .icon {
    opacity: 0.7;
}

.btn-control.speaker {
    background: var(--color-orange);
    color: white;
    border-color: var(--color-orange);
}

.btn-control.speaker.earpiece {
    background: var(--color-blue);
    border-color: var(--color-blue);
}

.btn-control.hangup {
    background: var(--color-red);
    color: white;
    border-color: var(--color-red);
}

.btn-control:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

@media (min-width: 768px) {
    .call-controls-main {
        display: flex;
        justify-content: center;
        gap: 20px;
    }
    
    .btn-control {
        min-width: 110px;
        transform: rotate(-1deg);
    }
    
    .btn-control:hover {
        transform: rotate(0deg) translateY(-3px);
    }
    
    .participant-item {
        transform: rotate(0.3deg);
    }
    
    .participant-item:nth-child(even) {
        transform: rotate(-0.3deg);
    }
}

.participants-mini {
    border-top: 1px solid var(--border-primary);
    padding-top: 15px;
    opacity: 0.8;
}

.participants-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 10px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.participants-header:hover {
    color: var(--text-primary);
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.participants-header.expanded .toggle-icon {
    transform: rotate(180deg);
}

.participants-mini ul {
    list-style: none;
    margin-top: 10px;
}

.participants-mini li {
    padding: 8px 12px;
    background: var(--bg-accent);
    border: 1px solid var(--color-blue);
    border-radius: 8px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.participant-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-accent);
    border-radius: 8px;
    margin-bottom: 8px;
    border: 1px solid var(--color-blue);
}

.participant-icon {
    font-size: 1.4rem;
    min-width: 28px;
}

.participant-name {
    flex: 1;
    font-weight: 600;
    font-size: 0.9rem;
}

.volume-bar {
    width: 40px;
    height: 4px;
    background: #e0e0e0;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.volume-bar::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0%;
    background: var(--color-green);
    border-radius: 2px;
    transition: width 0.1s ease;
}

.volume-bar.active::after {
    width: 100%;
    animation: pulse-volume 0.5s ease-in-out;
}

@keyframes pulse-volume {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.participants-mini li::before {
    display: none;
}

.reconnect-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease-out;
}

.reconnect-content {
    background: #ffffff !important;
    border: 3px solid #000000 !important;
    border-radius: 36px 80px 36px 80px/60px 36px 80px 36px;
    padding: 2rem;
    max-width: 400px;
    width: 90vw;
    box-shadow: 0 16px 48px 0 rgba(0,0,0,0.5) !important;
    position: relative;
    z-index: 1001;
    color: #000000 !important;
    text-align: center;
    transform: scale(0.9);
    animation: modalSlideIn 0.3s ease-out forwards;
}

[data-theme="dark"] .reconnect-content {
    background: #000000 !important;
    border: 3px solid #ffffff !important;
    color: #ffffff !important;
    box-shadow: 0 16px 48px 0 rgba(255,255,255,0.3) !important;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (min-width: 768px) {
    .participants-mini li {
        transform: rotate(0.3deg);
    }
    
    .participants-mini li:nth-child(even) {
        transform: rotate(-0.3deg);
        background: var(--bg-warm);
        border-color: var(--color-orange);
    }
}

.share-section {
    margin-bottom: 25px;
}

.share-quick {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-share {
    width: 100%;
    padding: 15px 20px;
    border: 2px dashed var(--color-blue);
    border-radius: 12px;
    background: var(--bg-accent);
    color: var(--text-primary);
    font-family: Helvetica, Arial, sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-share:hover {
    background: var(--color-blue);
    color: white;
    border-style: solid;
}

.btn-share .icon {
    font-size: 1.2rem;
}

.btn-share.copied {
    background: var(--color-green);
    color: white;
    border-color: var(--color-green);
}

.btn-share.copied .icon::before {
    content: '✓';
}

.btn-share.copied .text::after {
    content: 'ed!';
}

.caller-limit-warning {
    background: var(--bg-warm);
    border: 3px dashed var(--color-orange);
    border-radius: 15px;
    padding: 15px;
    margin: 15px 0;
    color: var(--color-orange);
    text-align: center;
    font-weight: 700;
    transform: rotate(-0.5deg);
    position: relative;
    transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.caller-limit-warning::before {
    content: '⚠️';
    margin-right: 8px;
    font-size: 1.2rem;
}

.help-section {
    margin-top: 30px;
}

.help-toggle {
    text-align: center;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px dashed var(--border-primary);
}

.help-toggle:hover {
    background: var(--bg-accent);
    color: var(--text-primary);
}

.help-content {
    margin-top: 15px;
    padding: 20px;
    background: var(--bg-accent);
    border-radius: 12px;
    border: 1px solid var(--color-blue);
}

.help-steps {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 15px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

.step-icon {
    font-size: 1.2rem;
    min-width: 24px;
}

.help-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px dashed var(--color-green);
}

/* Clean message section */
.message-section {
    margin-bottom: 20px;
    border-top: 1px solid var(--border-primary);
    padding-top: 15px;
}

.messages {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 15px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-primary);
    min-height: 80px;
}

.message {
    margin-bottom: 8px;
    max-width: 85%;
    word-wrap: break-word;
    position: relative;
}

.message.own {
    margin-left: auto;
}

.message.other {
    margin-right: auto;
}

.message-sender {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 4px;
    padding-left: 4px;
}

.message-content {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 10px 15px;
    font-size: 14px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    position: relative;
}

.message.own .message-content {
    background: #007aff;
    color: white;
    border-color: #007aff;
    border-radius: 18px 18px 4px 18px;
}

.message.other .message-content {
    background: var(--input-bg);
    border-color: var(--border-color);
    border-radius: 18px 18px 18px 4px;
}

.message.other .message-content {
    background: var(--input-bg);
    border-color: var(--border-color);
    border-radius: 18px 18px 18px 4px;
}

.message.own .message-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: -8px;
    width: 0;
    height: 0;
    border: 10px solid transparent;
    border-left-color: #007aff;
    border-bottom-color: #007aff;
}

.message.other .message-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -8px;
    width: 0;
    height: 0;
    border: 10px solid transparent;
    border-right-color: var(--input-bg);
    border-bottom-color: var(--input-bg);
}

.message-text {
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 4px;
}

.message-text a {
    color: inherit;
    text-decoration: underline;
    opacity: 0.9;
}

.message.own .message-text a {
    color: rgba(255,255,255,0.9);
}

.message-time {
    font-size: 0.7rem;
    opacity: 0.7;
    text-align: right;
    margin-top: 2px;
}

.message-input-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

.message-input-group {
    display: flex;
    align-items: center;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    padding: 5px;
}

.message-input-group input {
    flex: 1;
    padding: 10px 15px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 14px;
}

.message-input-group input:focus {
    outline: none;
}

.message-input-group input:focus {
    outline: none;
    border-color: var(--color-blue);
}

.typing-indicator {
    font-size: 12px;
    color: var(--text-color-subtle);
    padding: 0 10px;
    height: 20px;
    line-height: 20px;
}

.message-actions {
    position: absolute;
    top: -10px;
    right: 10px;
    display: none;
}

.message:hover .message-actions {
    display: block;
}

.btn-reaction {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    cursor: pointer;
}

.reaction-panel {
    position: absolute;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 5px;
    display: flex;
    gap: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 1001;
}

.reaction-panel span {
    cursor: pointer;
    font-size: 18px;
    padding: 2px;
}

.reactions {
    display: flex;
    gap: 5px;
    margin-top: 5px;
}

.reaction {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2px 6px;
    font-size: 12px;
}

.btn-send {
    padding: 8px;
    background: var(--color-blue);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Chat history section */
.chat-history {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg-accent);
    border-radius: 8px;
    border: 1px dashed var(--color-orange);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
}

.history-list {
    max-height: 150px;
    overflow-y: auto;
}

.history-item {
    padding: 8px 10px;
    background: var(--bg-secondary);
    border-radius: 6px;
    margin-bottom: 5px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.history-item:hover {
    background: var(--color-blue);
    color: white;
}

.history-room {
    font-weight: 600;
    color: var(--text-primary);
}

.history-time {
    font-size: 0.7rem;
    opacity: 0.7;
}

@media (min-width: 768px) {
    .help-content {
        transform: rotate(0.5deg);
        box-shadow: 6px 6px 0px var(--color-orange);
        border-width: 3px;
        border-radius: 25px;
        padding: 30px;
    }
    
    .help-steps {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
}

/* Mobile-first responsive design */
@media (max-width: 480px) {
    .container {
        padding: 15px 10px;
    }
    
    .logo {
        font-size: 3rem;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .call-setup, .call-interface {
        padding: 20px 15px;
        border-radius: 16px;
    }
    
    .btn-quick {
        padding: 18px;
    }
    
    .btn-quick .icon {
        font-size: 1.8rem;
    }
    
    .call-controls-main {
        gap: 12px;
    }
    
    .btn-control {
        padding: 18px 12px;
    }
    
    .btn-control .icon {
        font-size: 1.6rem;
    }
    
    .messages {
        max-height: 120px;
    }
    
    .chat-history {
        padding: 10px;
    }
    
    .history-list {
        max-height: 100px;
    }
    
    .message {
        max-width: 90%;
        font-size: 0.85rem;
    }
    
    .message-input-group {
        gap: 8px;
    }
    
    .btn-send {
        min-width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Landscape mobile optimization */
@media (max-height: 500px) and (orientation: landscape) {
    header {
        margin-bottom: 15px;
        padding: 10px 0;
    }
    
    .logo {
        font-size: 2.5rem;
        margin-bottom: 5px;
    }
    
    header h1 {
        font-size: 1.5rem;
        margin-bottom: 5px;
    }
    
    header p {
        font-size: 0.9rem;
    }
    
    .call-setup, .call-interface {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .help-section {
        margin-top: 15px;
    }
}

/* Tablet and desktop enhancements */
@media (min-width: 768px) {
    .container {
        padding: 40px 30px;
    }
    
    .call-controls-main {
        margin-bottom: 35px;
    }
}

/* Large screen optimizations */
@media (min-width: 1024px) {
    .container {
        max-width: 700px;
    }
    
    .call-setup, .call-interface {
        padding: 40px;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .btn-quick, .btn-control, .btn-share {
        border-width: 1.5px;
    }
}

/* Accessibility - Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .logo {
        animation: none;
    }
    
    .status-dot {
        animation: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000;
        --text-primary: #000;
        --bg-secondary: #fff;
    }
    
    [data-theme="dark"] {
        --border-primary: #fff;
        --text-primary: #fff;
        --bg-secondary: #000;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus-visible,
.btn-quick:focus-visible,
.btn-control:focus-visible,
.btn-share:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid var(--color-blue);
    outline-offset: 2px;
}

/* Touch target optimization */
@media (pointer: coarse) {
    .btn, .btn-quick, .btn-control, .btn-share {
        min-height: 44px;
    }
    
    input, select {
        min-height: 44px;
    }
    
    .settings-toggle, .help-toggle, .participants-header {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* Device-specific mode classes */
.smartwatch-mode {
    font-size: 12px;
}

.smartwatch-mode .help-section,
.smartwatch-mode .settings-toggle {
    display: none !important;
}

.landscape-compact header {
    margin-bottom: 10px;
    padding: 5px 0;
}

.landscape-compact .logo {
    font-size: 2rem;
    margin-bottom: 3px;
}

.landscape-compact header h1 {
    font-size: 1.3rem;
    margin-bottom: 3px;
}

.landscape-compact .call-setup,
.landscape-compact .call-interface {
    padding: 12px;
    margin-bottom: 10px;
}

/* Low performance device optimizations */
.low-performance * {
    transition-duration: 0.1s !important;
    animation-duration: 0.5s !important;
}

.low-performance .logo {
    animation: none;
}

.low-performance body::before {
    display: none;
}

/* Contact section styling */
.contact-section {
    margin: 20px 0;
    padding: 16px;
    background: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
}

.contact-id {
    font-family: 'Inter', monospace;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    text-align: center;
    padding: 12px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.firebase-toggle {
    width: 100%;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    border: 2px solid var(--border-color);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    cursor: pointer;
    margin-bottom: 16px;
    transition: all 0.2s ease;
}

.firebase-toggle.enabled {
    background: #ff6b35;
    color: white;
    border-color: #ff6b35;
}

.firebase-toggle.disabled {
    background: #28a745;
    color: white;
    border-color: #28a745;
}

.firebase-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Ultra-small screens (some smartwatches) */
@media (max-width: 200px) {
    .container {
        padding: 5px 3px;
    }
    
    .call-controls-main {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    
    .btn-control .text {
        display: none;
    }
    
    .btn-control {
        padding: 10px 5px;
    }
    
    .btn-control .icon {
        font-size: 1.2rem;
    }
    
    .contact-section {
        display: none;
    }
    
    .firebase-toggle {
        font-size: 12px;
        padding: 8px 12px;
    }
}

/* Ensure touch targets are always accessible on small screens */
@media (max-width: 300px) and (pointer: coarse) {
    .btn, .btn-quick, .btn-control, .btn-share {
        min-height: 40px;
        min-width: 40px;
    }
    
    input, select {
        min-height: 40px;
    }
}
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 2rem 0;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

#modeInfoModal {
    z-index: 1001;
}

.modal-content {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 36px 80px 36px 80px/60px 36px 80px 36px;
    max-width: 400px;
    width: 90%;
    border: 2px solid var(--border-color);
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    justify-content: flex-end;
}

.p2p-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0;
}

.qr-section {
    text-align: center;
    padding: 1rem;
}

#qrCode {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
}

.qr-scanner {
    text-align: center;
    padding: 1rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    margin: 1rem 0;
}

.qr-scanner.hidden {
    display: none;
}

#qrVideo {
    border-radius: 8px;
    margin-bottom: 1rem;
}

.contacts-section {
    margin: 2rem 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
}

.group-actions {
    position: relative;
}

.group-sidebar {
    position: absolute;
    top: 45px;
    right: 0;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 4px 12px var(--shadow-lg);
    z-index: 10;
    display: none;
    flex-direction: column;
    gap: 5px;
}

.group-sidebar.visible {
    display: flex;
}

.btn-icon {
    background: transparent;
    border: none;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-color-subtle);
    border-radius: 50%;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    color: var(--text-color);
    background: var(--input-bg);
}

.contacts-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--secondary-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.contact-item:hover {
    background: var(--hover-bg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-name {
    font-weight: 500;
}

.contact-last-seen {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.settings-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0;
}

.btn-danger {
    background: #ff4444;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 20px;
    cursor: pointer;
}

.btn-danger:hover {
    background: #cc3333;
}

.btn-copy {
    padding: 10px 16px;
    white-space: nowrap;
}

/* Secure notification system */
.secure-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 2000;
    max-width: 300px;
    word-wrap: break-word;
}

.secure-notification.info {
    background: #007aff;
}

.secure-notification.success {
    background: #28a745;
}

.secure-notification.error {
    background: #dc3545;
}

/* Secure modal system */
.secure-confirm-modal, .secure-prompt-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.secure-confirm-content, .secure-prompt-content {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 12px;
    max-width: 400px;
    width: 90%;
    border: 2px solid var(--border-color);
    text-align: center;
}

.secure-confirm-content p, .secure-prompt-content p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.secure-prompt-content input {
    width: 100%;
    padding: 10px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-color);
}

.secure-confirm-buttons, .secure-prompt-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.secure-confirm-buttons button, .secure-prompt-buttons button {
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--interactive-bg);
    color: var(--text-color);
    cursor: pointer;
    font-weight: 500;
}

.secure-confirm-buttons button:hover, .secure-prompt-buttons button:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
}

/* Connection Mode Toggle */
.connection-mode {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
}

.mode-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.mode-header label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
}

.btn-info {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-info:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
    border-color: var(--interactive-bg-hover);
}

.toggle-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.toggle-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-color-subtle);
    min-width: 80px;
    text-align: center;
}

.toggle-switch {
    position: relative;
    width: 60px;
    height: 30px;
    background: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.toggle-switch.cloud-mode {
    background: #007aff;
    border-color: #007aff;
}

.toggle-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: var(--text-color);
    border-radius: 50%;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.toggle-switch.cloud-mode .toggle-slider {
    transform: translateX(30px);
    background: white;
}

.toggle-container .toggle-label.active {
    color: var(--text-color);
    font-weight: 600;
}

/* Mode Info Modal */
.mode-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1rem 0;
}

.mode-option {
    padding: 1rem;
    background: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    box-shadow: 0 2px 8px 0 var(--shadow-sm);
}

.mode-option h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
}

.mode-option p {
    margin: 0 0 1rem 0;
    font-size: 14px;
    color: var(--text-color-subtle);
    line-height: 1.4;
}

.mode-option ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mode-option li {
    font-size: 13px;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.mode-option li:before {
    content: attr(data-icon);
    position: absolute;
    left: 0;
    font-size: 14px;
}

.btn-leave {
    padding: 6px 12px;
    background: var(--container-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 1px 4px 0 var(--shadow-sm);
    transition: all 0.2s ease;
}

.btn-leave {
    background: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.btn-leave:hover {
    background: var(--error-color);
    color: white;
    border-color: var(--error-color);
    box-shadow: 0 4px 16px 0 var(--shadow-lg);
    filter: brightness(1.2);
}

@media (max-width: 600px) {
    .secure-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .secure-confirm-content, .secure-prompt-content {
        padding: 1.5rem;
        margin: 0 10px;
    }
}

/* WhatsApp-style controls */
.whatsapp-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    padding: 16px;
    background: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 24px 48px 24px 48px/36px 24px 48px 24px;
    box-shadow: 0 2px 8px 0 var(--shadow-md);
}

.btn-call-primary {
    min-width: 100px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 16px;
    background: var(--container-bg);
    color: var(--text-color);
    box-shadow: 0 1px 4px 0 var(--shadow-sm);
    font-weight: 500;
}

.btn-call-secondary, .btn-call-danger {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 12px 24px 12px 24px/18px 12px 24px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--container-bg);
    color: var(--text-color);
    box-shadow: 0 1px 4px 0 var(--shadow-sm);
    font-weight: 500;
}

.btn-icon {
    font-size: 20px;
    line-height: 1;
}

.btn-text {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
}

.btn-call-primary {
    background: #25d366;
    color: white;
    border-color: #25d366;
}

.btn-call-primary:hover {
    background: #20b858;
    border-color: #20b858;
    box-shadow: 0 4px 16px 0 var(--shadow-lg);
}

.btn-call-secondary:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
    border-color: var(--interactive-bg-hover);
    box-shadow: 0 4px 16px 0 var(--shadow-lg);
}

.btn-call-secondary.active {
    background: #007aff;
    color: white;
    border-color: #007aff;
}

.btn-call-danger {
    background: #ff3b30;
    color: white;
    border-color: #ff3b30;
}

.btn-call-danger:hover {
    background: #d70015;
    border-color: #d70015;
    box-shadow: 0 4px 16px 0 var(--shadow-lg);
}

/* Group header with elegant URL display */
.group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.group-title-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    gap: 15px;
}

.group-name-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.inline-edit-wrapper {
    display: flex;
    align-items: center;
    gap: 5px;
}

.inline-edit-input {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 5px 10px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    width: 200px;
}

.group-title-section h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    flex-shrink: 0;
}

.btn-edit-title {
    margin-left: 10px;
    width: 32px;
    height: 32px;
    font-size: 14px;
}

.group-url {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1;
    min-width: 0;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 6px 12px;
    font-size: 13px;
    font-family: 'Inter', monospace;
}

.url-base {
    color: var(--text-color-subtle);
    white-space: nowrap;
    font-weight: 300;
}

.group-name {
    color: #007aff;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.btn-copy-url {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--interactive-bg);
    color: var(--text-color);
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    margin-left: 8px;
    flex-shrink: 0;
}

.btn-copy-url:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
    transform: scale(1.1);
}

.btn-sidebar {
    width: 100%;
    padding: 10px 15px;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 14px;
    cursor: pointer;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-sidebar:hover {
    background: var(--input-bg);
}

#copyBtn.btn-sidebar {
    border: 2px dashed var(--border-color);
    justify-content: center;
    font-weight: 600;
}

#copyBtn.btn-sidebar:hover {
    background: var(--interactive-bg-hover);
    color: var(--interactive-text-hover);
    border-style: solid;
}

@media (max-width: 600px) {
    .group-title-section {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    
    .group-url {
        font-size: 11px;
        padding: 4px 8px;
        font-weight: 300;
    }
    
    .url-base {
        font-weight: 300;
    }
    
    .group-status {
        display: none;
    }

.call-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .call-body {
        grid-template-columns: 1fr 250px;
    }
}

@media (min-width: 1200px) {
    body {
        font-size: 16px;
    }
    .container {
        max-width: 1100px;
    }
    .call-body {
        grid-template-columns: 1fr 300px;
    }
}
}
    
    .whatsapp-controls {
        gap: 10px;
        padding: 10px;
    }
    
    .btn-call-primary {
        min-width: 70px;
        height: 45px;
        padding: 0 12px;
    }
    
    .btn-call-secondary, .btn-call-danger {
        width: 45px;
        height: 45px;
    }
    
    .btn-icon {
        font-size: 18px;
    }
    
    .btn-text {
        font-size: 12px;
    }