:root {
    --bg-color: #050609;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --accent-primary: #00f2fe;
    --accent-secondary: #4facfe;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --error: #ff4d4d;
    --success: #00e676;
    --sidebar-width: 400px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

h1, h2, h3, .logo {
    font-family: 'Outfit', sans-serif;
}

.app-container {
    display: flex;
    height: 100vh;
    position: relative;
}

/* --- Viewer Section --- */
.viewer-section {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
}

.top-nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.5px;
}

.logo span span {
    color: var(--accent-primary);
}

.logo-icon {
    color: var(--accent-primary);
    width: 28px;
    height: 28px;
}

.system-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    border: 1px solid var(--glass-border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--error);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--error);
}

.status-indicator.ready {
    background-color: var(--success);
    box-shadow: 0 0 10px var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

/* --- Camera Wrapper --- */
.camera-wrapper {
    flex: 1;
    position: relative;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.scanning-lines {
    position: absolute;
    top: 10%;
    left: 10%;
    right: 10%;
    bottom: 10%;
    border-radius: 20px;
    pointer-events: none;
    box-shadow: inset 0 0 50px rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.scanning-lines::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--accent-primary), transparent);
    animation: scan 3s ease-in-out infinite;
    box-shadow: 0 0 10px var(--accent-primary);
}

@keyframes scan {
    0% { top: 0; }
    50% { top: 100%; }
    100% { top: 0; }
}

.camera-controls {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 5;
}

.glass-btn {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    transition: var(--transition);
}

.glass-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.3);
}

.glass-btn.primary {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    border: none;
    box-shadow: 0 10px 20px rgba(79, 172, 254, 0.3);
}

.glass-btn.primary:hover {
    box-shadow: 0 15px 30px rgba(79, 172, 254, 0.5);
}

/* --- Sidebar --- */
.info-sidebar {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: rgba(10, 11, 16, 0.85);
    backdrop-filter: blur(30px);
    border-left: 1px solid var(--glass-border);
    transition: var(--transition);
    z-index: 50;
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
}

.info-sidebar.hidden {
    transform: translateX(100%);
    opacity: 0;
    pointer-events: none;
}

.close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
}

.sidebar-content {
    padding: 3rem 2rem;
    height: 100%;
    overflow-y: auto;
}

.profile-header {
    text-align: center;
    margin-bottom: 3rem;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    background: var(--glass-bg);
    border: 2px solid var(--accent-primary);
    border-radius: 30px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.profile-avatar i {
    width: 60px;
    height: 60px;
    color: var(--text-secondary);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-header h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.profile-header p {
    color: var(--accent-primary);
    font-weight: 500;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 3rem;
}

.info-card {
    background: var(--glass-bg);
    padding: 1.25rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

.info-card.wide {
    grid-column: span 2;
}

.info-card label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.info-card p {
    font-size: 1rem;
    font-weight: 500;
}

.history-section h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.history-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--glass-border);
    font-size: 0.9rem;
}

/* --- Modal --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.modal.hidden {
    display: none;
}

.modal-content {
    width: 500px;
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    background: rgba(20, 21, 26, 0.9);
}

.modal-content h2 { margin-bottom: 0.5rem; }
.modal-content p { color: var(--text-secondary); margin-bottom: 2rem; }

.enrollment-preview {
    width: 100%;
    height: 200px;
    background: #000;
    border-radius: 16px;
    margin-bottom: 2rem;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
}

#capture-canvas {
    height: 100%;
}

#capture-status {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.7);
    padding: 0.5rem;
    text-align: center;
    font-size: 0.8rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.input-group input, .input-group textarea {
    width: 100%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.8rem 1rem;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    transition: var(--transition);
}

.input-group input:focus, .input-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 242, 254, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.form-actions .glass-btn { flex: 1; justify-content: center; }

.glass-btn.accent {
    background: var(--accent-primary);
    color: #000;
    font-weight: 600;
}

.glass-btn.accent:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* --- Toast --- */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 1rem 1.5rem;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    transition: var(--transition);
}

.toast.hidden { transform: translateY(100px); opacity: 0; }


/* --- Responsiveness (Media Queries) --- */

/* Tablets and small desktops */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 350px;
    }
}

/* Mobile Phones and Tablets (Vertical) */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }

    .top-nav {
        padding: 1.5rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .system-status {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
    }

    .camera-controls {
        bottom: 2rem;
        width: 90%;
        justify-content: center;
    }

    .glass-btn {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }

    .info-sidebar {
        z-index: 100; /* Ensure it covers everything on mobile */
    }

    .info-sidebar.hidden {
        transform: translateY(100%); /* Slide from bottom on mobile? Actually translateX is fine if width 100% */
        transform: translateX(100%);
    }

    .modal-content {
        width: 95%;
        padding: 1.5rem;
        margin: 10px;
    }

    .enrollment-preview {
        height: 160px;
    }

    .info-grid {
        grid-template-columns: 1fr; /* Single column for profile details */
    }

    .profile-avatar {
        width: 100px;
        height: 100px;
    }
}

/* Very Small Phones */
@media (max-width: 480px) {
    .top-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        background: rgba(0,0,0,0.9);
    }

    .camera-controls {
        flex-direction: column;
        align-items: center;
    }

    .camera-controls .glass-btn {
        width: 100%;
        justify-content: center;
    }

    .form-actions {
        flex-direction: column;
    }
}

::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 10px;
}