/* ============================================================
   MINITIENDA + ADMIN — Corpoautónoma
   ============================================================ */

/* ---- Variables (matching main site) ---- */
:root {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F8FC;
    --bg-dark: #0A2540;
    --bg-card: #F0F5FA;
    --text-primary: #1A1A2E;
    --text-secondary: #555566;
    --text-light: #8899AA;
    --text-on-dark: #F0F5FA;
    --accent-blue: #0077B6;
    --accent-blue-hover: #005F92;
    --accent-teal: #00B4D8;
    --accent-gradient: linear-gradient(135deg, #0077B6 0%, #00B4D8 100%);
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-pill: 50px;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.3s var(--ease-out-expo);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   STORE HEADER
   ============================================================ */
.store-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 16px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.store-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 18px;
    color: var(--text-primary);
}

.store-logo img {
    height: 45px;
    width: auto;
}

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

.header-btn {
    padding: 10px 24px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: all var(--transition-fast);
}

.header-btn--outline {
    background: transparent;
    border: 1.5px solid rgba(0, 0, 0, 0.12);
    color: var(--text-primary);
}
.header-btn--outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.header-btn--primary {
    background: var(--accent-blue);
    color: white;
}
.header-btn--primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-2px);
}

/* ============================================================
   STORE HERO
   ============================================================ */
.store-hero {
    background: var(--bg-dark);
    padding: 100px 40px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.store-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.store-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 119, 182, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.store-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 900;
    color: var(--text-on-dark);
    line-height: 1.1;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.store-hero p {
    font-size: clamp(15px, 1.3vw, 18px);
    color: rgba(240, 245, 250, 0.6);
    max-width: 550px;
    margin: 0 auto 40px;
    position: relative;
    z-index: 1;
}

/* ---- Filter Tabs ---- */
.filter-tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.filter-tab {
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    background: rgba(255, 255, 255, 0.12);
    color: white;
}

.filter-tab.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

/* ============================================================
   COURSES GRID
   ============================================================ */
.courses-section {
    padding: 60px 40px 100px;
    max-width: 1300px;
    margin: 0 auto;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.course-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

.course-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
}

.course-card-body {
    padding: 24px;
}

.course-card-level {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent-blue);
    background: rgba(0, 119, 182, 0.08);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    margin-bottom: 12px;
}

.course-card-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 8px;
}

.course-card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.course-price {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
}

.course-price small {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
}

.course-enroll-btn {
    padding: 10px 24px;
    background: var(--accent-gradient);
    color: white;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0, 119, 182, 0.3);
}

.course-enroll-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 119, 182, 0.4);
}

/* Empty state */
.courses-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    color: var(--text-light);
}

.courses-empty svg {
    margin: 0 auto 20px;
    opacity: 0.3;
}

.courses-empty h3 {
    font-size: 22px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

/* Duration / meta badges */
.course-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.course-meta-tag {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ============================================================
   ADMIN — LOGIN OVERLAY
   ============================================================ */
.admin-login-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.admin-login-box {
    background: white;
    padding: 48px 40px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-shadow: 0 30px 80px rgba(0,0,0,0.3);
}

.admin-login-box h2 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 8px;
}

.admin-login-box p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.admin-login-box input {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid rgba(0,0,0,0.1);
    border-radius: var(--radius-md);
    font-size: 15px;
    margin-bottom: 16px;
    transition: border-color 0.2s;
    outline: none;
}

.admin-login-box input:focus {
    border-color: var(--accent-blue);
}

.admin-login-box .login-btn {
    width: 100%;
    padding: 14px;
    background: var(--accent-gradient);
    color: white;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
}

.admin-login-box .login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 119, 182, 0.3);
}

.login-error {
    color: #e74c3c;
    font-size: 13px;
    margin-top: 10px;
    display: none;
}

/* ============================================================
   ADMIN — LAYOUT
   ============================================================ */
.admin-wrapper {
    display: none; /* shown after login */
    min-height: 100vh;
}

.admin-wrapper.active {
    display: flex;
}

.admin-sidebar {
    width: 260px;
    background: var(--bg-dark);
    color: white;
    padding: 30px 0;
    flex-shrink: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px 30px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 20px;
}

.admin-sidebar-brand img {
    height: 36px;
}

.admin-sidebar-brand span {
    font-weight: 700;
    font-size: 15px;
}

.admin-sidebar nav {
    flex: 1;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.admin-nav-item:hover,
.admin-nav-item.active {
    color: white;
    background: rgba(255,255,255,0.06);
}

.admin-nav-item.active {
    border-left: 3px solid var(--accent-teal);
}

.admin-sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.admin-logout-btn {
    color: rgba(255,255,255,0.4);
    font-size: 13px;
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s;
    padding: 8px 0;
    width: 100%;
    text-align: left;
}

.admin-logout-btn:hover {
    color: #e74c3c;
}

/* ---- Admin Main Content ---- */
.admin-main {
    flex: 1;
    background: var(--bg-secondary);
    padding: 40px;
    overflow-y: auto;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
}

.admin-topbar h1 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
}

.admin-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent-gradient);
    color: white;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(0,119,182,0.25);
}

.admin-add-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,119,182,0.35);
}

/* ---- Admin Courses Table ---- */
.admin-table-wrapper {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

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

.admin-table thead {
    background: var(--bg-card);
}

.admin-table th {
    padding: 14px 20px;
    text-align: left;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-light);
}

.admin-table td {
    padding: 16px 20px;
    font-size: 14px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    vertical-align: middle;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover td {
    background: rgba(0,119,182,0.02);
}

.admin-course-thumb {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg-card);
}

.admin-course-name {
    font-weight: 600;
    color: var(--text-primary);
}

.admin-course-level {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent-blue);
    background: rgba(0,119,182,0.08);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
}

.admin-actions-cell {
    display: flex;
    gap: 8px;
}

.admin-action-btn {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
}

.admin-action-btn--edit {
    background: rgba(0,119,182,0.08);
    color: var(--accent-blue);
}
.admin-action-btn--edit:hover {
    background: rgba(0,119,182,0.15);
}

.admin-action-btn--delete {
    background: rgba(231,76,60,0.08);
    color: #e74c3c;
}
.admin-action-btn--delete:hover {
    background: rgba(231,76,60,0.15);
}

/* ---- Admin Empty State ---- */
.admin-empty {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-light);
}

.admin-empty h3 {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* ============================================================
   ADMIN — MODAL (Add/Edit Course)
   ============================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 5000;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

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

.modal-box {
    background: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 30px 80px rgba(0,0,0,0.2);
    padding: 36px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

.modal-header h2 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 800;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    transition: background 0.2s;
}
.modal-close:hover {
    background: #e0e0e0;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid rgba(0,0,0,0.1);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: border-color 0.2s;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-blue);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-image-preview {
    width: 100%;
    height: 150px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 8px;
    border: 1px dashed rgba(0,0,0,0.1);
}

.form-image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.form-image-preview span {
    color: var(--text-light);
    font-size: 13px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.06);
}

.modal-btn {
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 700;
    transition: all 0.2s;
}

.modal-btn--cancel {
    background: var(--bg-card);
    color: var(--text-secondary);
}
.modal-btn--cancel:hover {
    background: #e0e0e0;
}

.modal-btn--save {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(0,119,182,0.2);
}
.modal-btn--save:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,119,182,0.3);
}

/* ============================================================
   STORE FOOTER
   ============================================================ */
.store-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.4);
    text-align: center;
    padding: 30px 40px;
    font-size: 13px;
}

.store-footer a {
    color: var(--accent-teal);
    transition: color 0.2s;
}
.store-footer a:hover {
    color: white;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .store-header { padding: 12px 20px; }
    .store-hero { padding: 80px 20px 60px; }
    .courses-section { padding: 40px 20px 60px; }
    .courses-grid { grid-template-columns: 1fr; }
    .admin-sidebar { width: 200px; }
    .admin-main { padding: 20px; }
    .form-row { grid-template-columns: 1fr; }
    .modal-box { padding: 24px; }
}

@media (max-width: 480px) {
    .admin-sidebar { display: none; }
    .filter-tabs { gap: 6px; }
    .filter-tab { padding: 8px 16px; font-size: 12px; }
}