/* ==========================================================================
   EXPLORE PAGE PREMIUM GLASSMORPHISM
   ========================================================================== */

body.explore-body {
    overflow: hidden;
}

body.explore-body .footer {
    display: none;
}

.explore-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    padding: 24px;
    height: calc(100vh - 74px);
    overflow: hidden;
}

/* 3D Glass Sidebar Filter */
.explore-sidebar {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 24px;
    height: 100%;
    position: relative;
    overflow-y: auto;
    box-shadow: var(--glass-shadow);
    color: var(--text-primary);
}

.explore-sidebar h3 {
    margin-bottom: 24px;
    font-size: 18px;
    font-weight: 600;
}

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

.filter-group label { 
    color: var(--text-secondary); 
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 8px;
}

#tokens-display { color: var(--primary-color); font-weight: 600; }
.checkbox-filters, .rating-filter { display: flex; flex-direction: column; gap: 8px; }
.checkbox-filters label, .rating-filter label { 
    color: var(--text-primary); 
    text-transform: none; 
    font-size: 14px; 
    font-weight: 400; 
    letter-spacing: normal;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Header & Sort Bar */
.explore-sidebar::-webkit-scrollbar { width: 4px; }
.explore-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 4px; }

.explore-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    padding-right: 16px;
}

.explore-content::-webkit-scrollbar { width: 6px; }
.explore-content::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.02); border-radius: 4px; }
.explore-content::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); border-radius: 4px; }
.explore-content::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.25); }

/* Header & Sort Bar */
.explore-header h2 { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px;}
.explore-header p { color: var(--text-secondary); margin-bottom: 24px; }

.sort-bar {
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.sort-bar select, .sort-bar input {
    background: rgba(255,255,255,0.05) !important;
    border: 1px solid var(--glass-border-light) !important;
    color: var(--text-primary) !important;
}

/* 3D Glass Skill Grid Cards */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
    gap: 24px;
}

.skill-listing {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-top: 1px solid var(--glass-border-light);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    box-shadow: var(--glass-shadow);
    color: var(--text-primary);
}

.skill-listing:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-light);
}

.skill-listing-header {
    padding: 20px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
    border-bottom: 1px solid var(--glass-border);
}
.skill-listing-header h3 { margin: 0; font-size: 18px; color: var(--primary-color); }
.skill-listing-header .skill-level { font-size: 12px; padding: 4px 8px; background: rgba(255,255,255,0.1); border-radius: 4px; display: inline-block; margin-top: 8px;}

.skill-listing-body { padding: 20px; flex: 1; display: flex; flex-direction: column; gap: 16px;}
.skill-listing-description { color: var(--text-secondary); font-size: 14px; line-height: 1.5; }

.skill-listing-teacher {
    border-top: 1px solid var(--glass-border);
    padding-top: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.teacher-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex; align-items: center; justify-content: center; font-weight: bold;
    color: white;
}
.teacher-info p { color: var(--text-secondary); font-size: 13px; margin-top: 2px;}
.teacher-info h4 { margin: 0; font-size: 15px; }

.skill-listing-footer {
    padding: 16px 20px;
    background: rgba(15, 23, 42, 0.3);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-tokens-cost { color: var(--primary-color); font-weight: 600; font-size: 15px;}

.skill-listing-footer button {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border-light);
    color: var(--text-primary); 
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.skill-listing-footer button:hover {
    background: rgba(255,255,255,0.1);
}

.skill-listing-footer .book-btn {
    background: var(--primary-color);
    border-color: transparent;
    color: white;
}

.skill-listing-footer .book-btn:hover {
    filter: brightness(1.1);
}

/* Skill Details Modal Styling */
.details-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--glass-border);
}

.details-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.details-info h2 {
    font-size: 24px;
    margin: 0 0 4px 0;
    color: var(--text-primary);
}

.details-teacher {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.details-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.details-section {
    margin-bottom: 24px;
}

.details-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.details-description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
}

.details-schedule {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    background: rgba(15, 23, 42, 0.4);
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.schedule-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
}

.highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.details-location {
    margin-top: 12px;
    font-size: 14px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

@media (max-width: 992px) {
    .explore-container { grid-template-columns: 240px 1fr; }
}

@media (max-width: 768px) {
    body.explore-body { overflow: auto; }
    body.explore-body .footer { display: block; }
    .explore-container { grid-template-columns: 1fr; gap: 24px; padding: 24px; height: auto; overflow: visible; }
    .explore-sidebar { position: relative; top: 0; height: auto; overflow: visible; margin-bottom: 24px; }
    .explore-content { height: auto; overflow-y: visible; padding-right: 0; }
    .sort-bar { flex-direction: column; align-items: stretch; }
}

@media (max-width: 480px) {
    .explore-container { padding: 12px; }
    .details-schedule { grid-template-columns: 1fr; }
}