:root {
    --primary-color: #6366f1;
    --primary-hover: #5b5bf6;
    --success-color: #10b981;
    --success-hover: #059669;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --background: #f8fafc;
    --surface: #ffffff;
    --surface-elevated: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.hidden {
    display: none !important;
}

/* Authentication Form */
.auth-form {
    background: var(--surface);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.auth-form h1 {
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input[type="password"],
.form-group input[type="text"] {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 16px;
    transition: all 0.2s ease;
    background: var(--surface);
    color: var(--text-primary);
}

.form-group input[type="password"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.role-selection {
    display: flex;
    gap: 16px;
    margin-top: 12px;
}

.role-selection label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-weight: 500;
    padding: 16px 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    flex: 1;
    transition: all 0.2s ease;
    background: var(--surface);
    text-align: center;
    justify-content: center;
}

.role-selection label:hover {
    border-color: var(--primary-color);
    background: rgb(99 102 241 / 0.05);
}

.role-selection input[type="radio"] {
    margin: 0;
    width: 20px;
    height: 20px;
}

.role-selection input[type="radio"]:checked + span {
    color: var(--primary-color);
}

.role-selection label:has(input:checked) {
    border-color: var(--primary-color);
    background: rgb(99 102 241 / 0.1);
}

button {
    width: 100%;
    padding: 16px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

button:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--success-color);
}

.btn-primary:hover {
    background: var(--success-hover);
}

.btn-danger {
    background: var(--danger-color);
}

.btn-danger:hover {
    background: var(--danger-hover);
}

.error {
    color: var(--danger-color);
    text-align: center;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgb(239 68 68 / 0.1);
    border-radius: var(--radius);
    border: 1px solid rgb(239 68 68 / 0.2);
    font-size: 14px;
    font-weight: 500;
}

/* Main Application */
#app-container {
    align-items: stretch;
    padding: 0;
    min-height: 100vh;
    background: var(--background);
}

#app-container {
    flex-direction: column;
}

#app-container .container {
    width: 100%;
    max-width: none;
    flex-direction: column;
    padding: 0;
}

.header {
    background: var(--surface);
    padding: 24px 32px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.header h1 {
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    background: var(--border-light);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
}

.main-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    background: var(--background);
    gap: 0;
}

.video-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    position: relative;
    min-height: 600px;
    margin: 24px 24px 0 24px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

#remote-video {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    background: #000;
    display: block;
    border-radius: var(--radius-lg);
}

.no-stream {
    color: var(--text-muted);
    text-align: center;
    font-size: 18px;
    font-weight: 500;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.no-stream::before {
    content: "📺";
    font-size: 48px;
    opacity: 0.5;
}

.controls {
    margin: 24px;
    padding: 24px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.controls button {
    width: auto;
    min-width: 160px;
    margin-right: 12px;
    font-size: 14px;
    padding: 12px 20px;
}

.stream-status-header {
    margin: 24px 24px 24px 24px;
    padding: 16px 24px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.stream-status-header.active {
    background: rgb(16 185 129 / 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
    box-shadow: 0 0 0 3px rgb(16 185 129 / 0.1);
}

.stream-status-header.active::before {
    content: "🔴 ";
    animation: pulse 2s infinite;
}

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

/* Responsive Design */

@media (max-width: 768px) {
    .role-selection {
        flex-direction: column;
        gap: 12px;
    }
    
    .auth-form {
        padding: 32px;
    }
    
    .header {
        padding: 20px 24px;
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .controls {
        margin: 16px;
        padding: 20px;
    }
    
    .controls button {
        min-width: 140px;
        margin-right: 8px;
        margin-bottom: 8px;
    }
    
         .video-container {
         margin: 16px 16px 0 16px;
         min-height: 300px;
     }
     
     .stream-status-header {
         margin: 16px;
         padding: 12px 16px;
         font-size: 14px;
     }
}

@media (max-width: 480px) {
    .auth-form {
        padding: 24px;
    }
    
    .container {
        padding: 16px;
    }
    
    .role-selection label {
        padding: 12px 16px;
        font-size: 14px;
    }
}

/* Loading and transition effects */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

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

/* Smooth transitions */
* {
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

/* Focus states for accessibility */
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Improved scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--border-light);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}