:root {
    --bg-dark: #030712;
    --card-bg: rgba(15, 23, 42, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-main: #94a3b8;
    --text-bright: #f8fafc;
    --accent-green: #34d399;
    --accent-blue: #38bdf8;
    --radius: 16px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-main, sans-serif);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* Dual-Language Rules */
html[lang="en"] [lang="bn"] {
    display: none !important;
}

html[lang="bn"] [lang="en"] {
    display: none !important;
}

.hidden {
    display: none !important;
}

/* Hero Section */
.events-hero {
    position: relative;
    padding: 120px 20px 50px;
    text-align: center;
    background: radial-gradient(circle at top, #0b2e2a 0%, #030712 80%);
    border-bottom: 1px solid rgba(16, 185, 129, 0.25);
}

.events-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: #ffffff;
}

.events-title span.green-text {
    color: var(--accent-green);
    text-shadow: 0 0 20px rgba(52, 211, 153, 0.4);
}

.events-subtitle {
    font-size: 1.15rem;
    color: var(--text-main);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Sections & Grid */
.events-section {
    padding: 60px 8% 80px;
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
    align-items: stretch;
}

.event-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: all 0.3s ease;
}

.event-card:hover {
    transform: translateY(-6px);
    border-color: rgba(52, 211, 153, 0.5);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 14px rgba(16, 185, 129, 0.25);
}

.card-image-wrapper {
    position: relative;
    height: 200px;
    background: #0f172a;
    border-bottom: 1px solid var(--border-color);
}

.card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.event-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: #0e9489;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 20px;
    text-transform: uppercase;
}

.card-content {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-content h3 {
    color: var(--text-bright);
    margin: 0 0 10px 0;
    font-size: 1.25rem;
}

.card-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 20px;
    color: var(--text-main);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #cbd5e1;
    margin-bottom: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.card-meta i {
    color: var(--accent-blue);
    margin-right: 4px;
}

/* Details Page View */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 24px;
}
.back-link:hover { text-decoration: underline; }

.event-detail-header {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 30px;
    height: 350px;
    background: #000;
    border: 1px solid var(--border-color);
}
.event-detail-header img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
.detail-header-overlay {
    position: absolute;
    bottom: 0;
    left: 0; right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(3, 7, 18, 0.95));
}
.detail-header-overlay h1 { color: var(--text-bright); margin: 8px 0; font-size: 2.3rem; }
.detail-header-overlay p { color: var(--text-main); font-size: 1.1rem; margin: 0; }

.event-detail-body {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.description-block {
    line-height: 1.75;
    margin-bottom: 30px;
    color: #cbd5e1;
}

.segments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 16px;
}
.segment-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 12px;
}
.segment-card h4 { color: var(--text-bright); margin: 0 0 8px 0; }
.segment-card p { margin: 0; font-size: 0.9rem; color: var(--text-main); }

.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius);
    position: sticky;
    top: 20px;
}
.sidebar-card h3 { color: var(--text-bright); margin-top: 0; }
.meta-list { list-style: none; padding: 0; margin: 20px 0; }
.meta-list li { margin-bottom: 16px; display: flex; gap: 12px; align-items: center; }
.meta-list i { color: var(--accent-blue); font-size: 1.2rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border: none;
    box-sizing: border-box;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary { background: linear-gradient(135deg, #0e9489, #5941c3); color: #fff; }
.btn-success { background: linear-gradient(135deg, #0e9489, #10b981); color: #fff; }
.btn-block { display: block; width: 100%; }
.btn-lg { padding: 14px 24px; font-size: 1.1rem; }

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 211, 153, 0.25);
}

@media (max-width: 1024px) {
    .events-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
    .events-title { font-size: 2.2rem; }
    .events-grid { grid-template-columns: 1fr; }
    .event-detail-body { grid-template-columns: 1fr; }
    .events-section { padding: 40px 20px; }
}