@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Sans:wght@300;400;500;600;700&display=swap');

/* ── Variables ────────────────────────────── */
:root {
    --bg-base:     #0a0a0f;
    --bg-card:     #111118;
    --bg-elevated: #1a1a26;
    --bg-input:    #16161f;

    --accent:      #f5c518;
    --accent-dim:  #d4a017;
    --accent-glow: rgba(245, 197, 24, 0.25);
    --neon:        #f5c518;
    --neon-green:  #34d399;

    --text-primary:   #f5f5f0;
    --text-secondary: #9090b0;
    --text-muted:     #5a5a78;

    --border:      rgba(245, 197, 24, 0.25);
    --border-card: rgba(255, 255, 255, 0.06);

    --radius-sm:  8px;
    --radius-md:  14px;
    --radius-lg:  20px;
    --radius-xl:  28px;

    --shadow-card:  0 4px 24px rgba(0,0,0,0.5);
    --shadow-glow:  0 0 40px rgba(245, 197, 24, 0.2);
    --shadow-hover: 0 8px 40px rgba(245, 197, 24, 0.3);

    --sidebar-w: 260px;
    --navbar-h:  64px;

    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ── Typography ───────────────────────────── */
h1, h2, h3, h4 {
    font-family: 'Bebas Neue', sans-serif;
    letter-spacing: 0.04em;
    line-height: 1.1;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.4rem); }
h3 { font-size: 1.4rem; }

a { color: var(--neon); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

.logo-image{
    height: 130px !important;
}



/* ── Layout con Sidebar ───────────────────── */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-card);
    border-right: 1px solid var(--border-card);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-logo {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-card);
}

.sidebar-logo .logo-mark {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.6rem;
    letter-spacing: 0.08em;
    background: linear-gradient(135deg, var(--accent), var(--neon));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-logo .logo-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: 2px;
}

.sidebar-user {
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-card);
}

.sidebar-user .avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-dim), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; font-weight: 700; color: #fff;
    flex-shrink: 0;
}

.sidebar-user .user-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.sidebar-user .user-role {
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

.nav-label {
    padding: 0.25rem 1.5rem 0.5rem;
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1.5rem;
    margin: 0.1rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all var(--transition);
    cursor: pointer;
}

.nav-item:hover {
    background: rgba(245, 197, 24, 0.1);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(245, 197, 24, 0.2), rgba(212, 160, 23, 0.1));
    color: var(--neon);
    border: 1px solid var(--border);
}

.nav-item .nav-icon { font-size: 1.1rem; }

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-card);
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.4);
}

/* ── Main content ─────────────────────────── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── Topbar ───────────────────────────────── */
.topbar {
    height: var(--navbar-h);
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.4rem;
    letter-spacing: 0.06em;
    color: var(--text-primary);
}

.topbar-actions { display: flex; align-items: center; gap: 1rem; }

/* ── Page content ─────────────────────────── */
.page-content {
    flex: 1;
    padding: 2rem;
}

/* ── Cards ────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}

.card:hover {
    border-color: var(--border);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

/* Curso card */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
}

.course-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--accent-glow), transparent);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.course-card:hover {
    transform: translateY(-4px);
    border-color: var(--border);
    box-shadow: var(--shadow-hover);
}

.course-card:hover::before { opacity: 1; }

.course-card-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
    background: var(--bg-elevated);
}

.course-card-icon {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
    position: relative;
    overflow: hidden;
}

.course-card-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, var(--accent-glow), transparent 70%);
}

.course-card-body {
    padding: 1.25rem;
}

.course-card-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.3rem;
    letter-spacing: 0.06em;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.course-card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ── Botones ──────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dim));
    color: #111;
    box-shadow: 0 4px 16px rgba(245, 197, 24, 0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--neon), var(--accent));
    box-shadow: 0 6px 24px rgba(245, 197, 24, 0.5);
    transform: translateY(-1px);
    color: #fff;
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-card);
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.08);
    color: var(--text-primary);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.25);
}
.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
}

.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.8rem; }

/* ── Formularios ──────────────────────────── */
.form-group { margin-bottom: 1.2rem; }

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.9rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'DM Sans', sans-serif;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-textarea { min-height: 100px; resize: vertical; }
.form-select { cursor: pointer; }

/* ── Tabla admin ──────────────────────────── */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-card);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

thead {
    background: var(--bg-elevated);
}

th {
    padding: 0.85rem 1rem;
    text-align: left;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    white-space: nowrap;
}

td {
    padding: 0.8rem 1rem;
    border-top: 1px solid var(--border-card);
    color: var(--text-secondary);
    vertical-align: middle;
}

tr:hover td { background: rgba(255,255,255,0.02); }

/* ── Badges ───────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.badge-admin   { background: rgba(245,197,24,0.2); color: var(--neon); border: 1px solid rgba(245,197,24,0.3); }
.badge-user    { background: rgba(52,211,153,0.1); color: var(--neon-green); border: 1px solid rgba(52,211,153,0.2); }
.badge-active  { background: rgba(52,211,153,0.1); color: var(--neon-green); }
.badge-inactive{ background: rgba(239,68,68,0.1);  color: #f87171; }

/* ── Alertas ──────────────────────────────── */
.alert {
    padding: 0.9rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    animation: slideDown 0.3s ease;
}

.alert-success {
    background: rgba(52,211,153,0.1);
    border: 1px solid rgba(52,211,153,0.25);
    color: var(--neon-green);
}

.alert-error {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.25);
    color: #f87171;
}

/* ── Stats cards ──────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    transition: all var(--transition);
}

.stat-card:hover {
    border-color: var(--border);
    box-shadow: var(--shadow-glow);
}

.stat-value {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--neon), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.4rem;
}

/* ── Welcome banner ───────────────────────── */
.welcome-banner {
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem 2.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(245,197,24,0.15), transparent 70%);
    pointer-events: none;
}

.welcome-banner h1 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.welcome-banner h1 span {
    background: linear-gradient(135deg, var(--neon), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-banner p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ── Lesson content ───────────────────────── */
.lesson-content {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    line-height: 1.75;
}

.lesson-content h2, .lesson-content h3 {
    font-family: 'Bebas Neue', sans-serif;
    color: var(--neon);
    margin: 1.5rem 0 0.5rem;
}

.lesson-content p { color: var(--text-secondary); margin-bottom: 1rem; }

.lesson-content ul, .lesson-content ol {
    color: var(--text-secondary);
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.lesson-content li { margin-bottom: 0.4rem; }

.lesson-content strong { color: var(--text-primary); }

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    margin: 1.5rem 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-card);
}

.video-wrapper iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: 0;
}

/* ── Mobile hamburger ─────────────────────── */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0.25rem;
}

/* ── Animations ───────────────────────────── */
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

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

.animate-fade-up {
    animation: fadeUp 0.5s ease both;
}

/* stagger helper */
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.10s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.20s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.30s; }
.stagger > *:nth-child(7) { animation-delay: 0.35s; }
.stagger > *:nth-child(8) { animation-delay: 0.40s; }

/* ── Responsive ───────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 40px rgba(0,0,0,0.7);
    }

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

    .hamburger { display: block; }

    .page-content { padding: 1rem; }

    .course-grid {
        grid-template-columns: 1fr;
    }

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

/* ── Overlay (mobile) ─────────────────────── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 99;
    backdrop-filter: blur(4px);
}

.sidebar-overlay.show { display: block; }

/* ── Misc ─────────────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.text-accent { color: var(--accent); }
.text-neon   { color: var(--neon); }
.text-muted  { color: var(--text-muted); }
.text-sm     { font-size: 0.8rem; }
.mt-1  { margin-top: 0.5rem; }
.mt-2  { margin-top: 1rem; }
.mb-2  { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.w-100 { width: 100%; }

/* Curso detail */
.lesson-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.lesson-item:hover {
    background: rgba(245, 197, 24, 0.1);
    border-color: var(--border);
    color: var(--text-primary);
}

.lesson-item .lesson-num {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--accent-glow);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--neon);
    flex-shrink: 0;
}