/* ============================================================
   Élite FarmacIA - Global Styles
   ============================================================ */

/* CSS Variables */
:root {
    --primary: #1E3A6E;
    --primary-light: #2A4F8F;
    --primary-dark: #142850;
    --accent: #8EC420;
    --accent-light: #A5D44A;
    --accent-dark: #6FA010;
    --bg: #FFFFFF;
    --bg-secondary: #F5F7FA;
    --text: #333333;
    --text-light: #666666;
    --border: #E0E4E8;
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17A2B8;
    --sidebar-bg: #1E3A6E;
    --sidebar-text: #FFFFFF;
    --sidebar-hover: #2A4F8F;
    --sidebar-active: #8EC420;
    --radius: 8px;
    --shadow: 0 2px 10px rgba(0,0,0,0.08);
    --sidebar-width: 260px;
    --header-height: 60px;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-light);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================================
   LAYOUT
   ============================================================ */

.app-layout {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content-area {
    flex: 1;
    padding: 24px;
    margin-top: var(--header-height);
}

/* ============================================================
   SIDEBAR
   ============================================================ */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    overflow-y: auto;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo img {
    max-width: 180px;
    height: auto;
    filter: brightness(10);
    opacity: 0.5;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--sidebar-text);
    font-size: 14px;
    transition: background 0.2s, border-left 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text);
}

.sidebar-nav a.active {
    background: rgba(142, 196, 32, 0.15);
    border-left-color: var(--sidebar-active);
    color: var(--sidebar-active);
}

.sidebar-nav a .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar-user {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}

.sidebar-user .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    color: #fff;
}

/* ============================================================
   HEADER
   ============================================================ */

.header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--header-height);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 90;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Notifications dropdown */
.notifications-btn {
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-light);
    padding: 4px;
}

.notifications-badge {
    position: absolute;
    top: -2px;
    right: -4px;
    background: var(--danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notifications-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 360px;
    max-height: 420px;
    overflow-y: auto;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: none;
    z-index: 200;
}

.notifications-dropdown.open {
    display: block;
}

.notification-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.2s;
}

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

.notification-item.unread {
    background: rgba(142, 196, 32, 0.05);
}

.notification-item .notif-title {
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 2px;
}

.notification-item .notif-message {
    font-size: 12px;
    color: var(--text-light);
}

.notification-item .notif-time {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 4px;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text);
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-dark);
    color: #fff;
}

.btn-secondary {
    background: var(--primary);
    color: #fff;
}
.btn-secondary:hover {
    background: var(--primary-light);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--border);
}
.btn-outline:hover {
    background: var(--bg-secondary);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover {
    background: #c82333;
    color: #fff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================================
   FORMS
   ============================================================ */

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 13px;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 110, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    appearance: auto;
}

.form-text {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ============================================================
   TABLES
   ============================================================ */

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th,
table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

table th {
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    background: var(--bg-secondary);
}

table tbody tr:hover {
    background: var(--bg-secondary);
}

/* ============================================================
   BADGES & STATUS
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: rgba(40,167,69,0.1); color: var(--success); }
.badge-warning { background: rgba(255,193,7,0.15); color: #b8860b; }
.badge-danger { background: rgba(220,53,69,0.1); color: var(--danger); }
.badge-info { background: rgba(23,162,184,0.1); color: var(--info); }
.badge-primary { background: rgba(30,58,110,0.1); color: var(--primary); }

/* ============================================================
   TOASTS
   ============================================================ */

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius);
    color: #fff;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    animation: slideIn 0.3s ease;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); color: #333; }
.toast-info { background: var(--info); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ============================================================
   MODALS
   ============================================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--bg);
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
    line-height: 1;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ============================================================
   TABS
   ============================================================ */

.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 24px;
}

.tab-btn {
    padding: 12px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--accent);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar .progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-light);
    margin-top: 4px;
}

/* ============================================================
   AUTH PAGES
   ============================================================ */

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-dark);
    position: relative;
    overflow: hidden;
}

.auth-page #three-canvas {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.auth-card {
    position: relative;
    z-index: 10;
    background: rgba(255,255,255,0.97);
    border-radius: 12px;
    padding: 40px;
    width: 90%;
    max-width: 440px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.auth-logo {
    text-align: center;
    margin-bottom: 24px;
}

.auth-logo img {
    max-width: 200px;
    height: auto;
}

.auth-title {
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.auth-subtitle {
    text-align: center;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--text-light);
}

.auth-footer a {
    color: var(--accent);
    font-weight: 500;
}

/* ============================================================
   DASHBOARD STATS
   ============================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.stat-icon.blue { background: rgba(30,58,110,0.1); color: var(--primary); }
.stat-icon.green { background: rgba(142,196,32,0.1); color: var(--accent); }
.stat-icon.orange { background: rgba(255,193,7,0.1); color: #e67e22; }
.stat-icon.red { background: rgba(220,53,69,0.1); color: var(--danger); }

.stat-info .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-info .stat-label {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ============================================================
   RUMBO PHASES
   ============================================================ */

.rumbo-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.rumbo-phase {
    display: flex;
    gap: 20px;
    position: relative;
}

.rumbo-phase:not(:last-child)::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    bottom: -20px;
    width: 3px;
    background: var(--border);
}

.rumbo-phase.completed:not(:last-child)::before {
    background: var(--accent);
}

.phase-indicator {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    z-index: 1;
    border: 3px solid var(--border);
}

.rumbo-phase.active .phase-indicator {
    background: var(--accent);
    border-color: var(--accent-dark);
    box-shadow: 0 0 0 6px rgba(142, 196, 32, 0.2);
}

.rumbo-phase.completed .phase-indicator {
    background: var(--accent);
    border-color: var(--accent);
}

.phase-content {
    flex: 1;
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.phase-content:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}

.phase-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.phase-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.phase-subtitle {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.phase-progress {
    display: flex;
    align-items: center;
    gap: 12px;
}

.phase-progress .progress-bar {
    flex: 1;
}

/* Phase lessons list */
.phase-lessons {
    margin-top: 16px;
    display: none;
}

.phase-lessons.open {
    display: block;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s;
    border-bottom: 1px solid var(--border);
}

.lesson-item:last-child {
    border-bottom: none;
}

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

.lesson-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 12px;
    color: transparent;
}

.lesson-item.completed .lesson-check {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.lesson-info {
    flex: 1;
}

.lesson-title {
    font-weight: 500;
    font-size: 14px;
}

.lesson-meta {
    font-size: 12px;
    color: var(--text-light);
}

/* ============================================================
   LESSON VIEWER
   ============================================================ */

.lesson-viewer {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 24px;
}

.lesson-video {
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.lesson-video video,
.lesson-video iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.lesson-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lesson-materials {
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
}

.material-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius);
    transition: background 0.2s;
    cursor: pointer;
}

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

.material-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(30,58,110,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary);
}

/* ============================================================
   UTILITIES
   ============================================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-light); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.hidden { display: none; }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
    .lesson-viewer {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .header {
        left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .content-area {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .auth-card {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}