:root {
    --color-primary: #232F3E;
    --color-accent: #FF9900;
    --color-accent-hover: #EC7211;
    --color-text: #1a1a2e;
    --color-text-muted: #64748b;
    --color-bg: #f8fafc;
    --color-card: #ffffff;
    --color-card-border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 40%, #232F3E 100%);
    padding: clamp(3rem, 8vw, 5rem) clamp(1.5rem, 4vw, 3rem) clamp(2.5rem, 6vw, 4rem);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 70%, rgba(255,153,0,0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(255,153,0,0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.hero-tagline {
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 2.25rem;
    line-height: 1.6;
}

/* ---------- Profile card ---------- */
.profile-card {
    display: inline-flex;
    align-items: center;
    gap: 1.25rem;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 1.25rem 1.75rem;
    border-radius: var(--radius);
    text-align: left;
}

.profile-image {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255,255,255,0.2);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.profile-info h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.1rem;
}

.profile-title {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0.65rem;
}

.social-links { display: flex; gap: 0.4rem; }

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    transition: background var(--transition), transform var(--transition);
}

.social-links a:hover { background: rgba(255,255,255,0.25); transform: scale(1.1); }
.social-links img { width: 18px; height: 18px; border-radius: 4px; object-fit: cover; }

/* ---------- Main ---------- */
.main {
    max-width: 960px;
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 3vw, 2rem);
}

.section-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }

.section-header h2 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.01em;
}

.section-header .line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, var(--color-card-border), transparent);
}

/* ---------- Events grid ---------- */
.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.event-card {
    background: var(--color-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius);
    padding: 1.75rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    cursor: pointer;
}

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

.event-content { flex: 1; min-width: 0; }

.event-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.35;
    margin-bottom: 0.6rem;
}

.event-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-bottom: 0.75rem;
}

.event-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.event-meta-item svg { width: 15px; height: 15px; flex-shrink: 0; }

.event-description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 0.9rem;
}

.event-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tag {
    background: #fff3e0;
    border: 1px solid rgba(255,153,0,0.3);
    color: var(--color-accent-hover);
    padding: 0.25rem 0.7rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.event-arrow {
    color: var(--color-text-muted);
    transition: transform var(--transition), color var(--transition);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.event-arrow svg { width: 20px; height: 20px; }
.event-card:hover .event-arrow { transform: translateX(4px); color: var(--color-accent); }

.empty-state {
    text-align: center;
    color: var(--color-text-muted);
    padding: 2rem;
    font-size: 0.95rem;
}

/* ---------- Event year folders ---------- */
.event-folder {
    grid-column: 1 / -1;
    background: var(--color-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow var(--transition), border-color var(--transition);
}

.event-folder[open] {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-accent);
}

.event-folder-summary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.75rem;
    cursor: pointer;
    list-style: none;
    user-select: none;
    transition: background var(--transition);
}

.event-folder-summary::-webkit-details-marker { display: none; }
.event-folder-summary:hover { background: #fff8ef; }

.event-folder-icon {
    display: inline-flex;
    color: var(--color-accent-hover);
}
.event-folder-icon svg { width: 22px; height: 22px; }

.event-folder-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
}

.event-folder-count {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: var(--color-bg);
    border: 1px solid var(--color-card-border);
    padding: 0.15rem 0.6rem;
    border-radius: 100px;
}

.event-folder-chevron {
    margin-left: auto;
    display: inline-flex;
    color: var(--color-text-muted);
    transition: transform var(--transition), color var(--transition);
}
.event-folder-chevron svg { width: 18px; height: 18px; }
.event-folder[open] .event-folder-chevron { transform: rotate(180deg); color: var(--color-accent); }

.event-folder-grid {
    padding: 0 1.75rem 1.75rem;
}

@media (max-width: 640px) {
    .event-folder-summary { padding: 1.1rem 1.25rem; }
    .event-folder-grid { padding: 0 1.25rem 1.25rem; }
}

/* ---------- Footer ---------- */
.footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--color-card-border);
    max-width: 960px;
    margin: 0 auto;
}

.footer a { color: var(--color-accent-hover); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ---------- Animation ---------- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in { animation: fadeInUp 0.4s ease-out both; }

@media (max-width: 640px) {
    .profile-card { flex-direction: column; text-align: center; }
    .social-links { justify-content: center; }
    .events-grid { grid-template-columns: 1fr; }
    .event-card { padding: 1.5rem; }
}

/* ============================================================
   Landing page (lausalin.dev) - extends the styles above
   ============================================================ */

/* Back link (used on the events page hero) */
.back-link {
    display: inline-block;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    transition: color var(--transition);
}
.back-link:hover { color: var(--color-accent); }

/* Generic content section spacing */
.content-section { margin-bottom: clamp(2.5rem, 6vw, 4rem); }

.section-header .section-link {
    margin-left: auto;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent-hover);
    text-decoration: none;
    white-space: nowrap;
}
.section-header .section-link:hover { text-decoration: underline; }

/* ---------- Blog grid (Dev.to) ---------- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}

.blog-card {
    background: var(--color-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.blog-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-accent);
}

.blog-cover {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: #eef2f7;
    display: block;
}

.blog-body { padding: 1.25rem 1.4rem 1.5rem; display: flex; flex-direction: column; flex: 1; }

.blog-body h3 {
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.35;
    margin-bottom: 0.6rem;
}

.blog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.78rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: 0.85rem;
}

.blog-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: auto; }

/* ---------- Video grid (YouTube) ---------- */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}

.video-card {
    background: var(--color-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.video-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-accent);
}

.video-thumb-wrap { position: relative; aspect-ratio: 16 / 9; background: #000; }
.video-thumb { width: 100%; height: 100%; object-fit: cover; display: block; }

.video-play {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: rgba(0,0,0,0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), transform var(--transition);
}
.video-card:hover .video-play { background: var(--color-accent); transform: scale(1.08); }
.video-play svg { width: 22px; height: 22px; color: #fff; margin-left: 3px; }

.video-body { padding: 1.1rem 1.4rem 1.4rem; }
.video-body h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.35;
    margin-bottom: 0.4rem;
}
.video-body p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.55; }

/* ---------- Events CTA ---------- */
.cta-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
    background: linear-gradient(135deg, #1e293b 0%, #232F3E 100%);
    color: #fff;
    border-radius: var(--radius);
    padding: 1.75rem 2rem;
}
.cta-card .cta-text h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.3rem; }
.cta-card .cta-text p { font-size: 0.9rem; opacity: 0.82; }
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-accent);
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    padding: 0.7rem 1.3rem;
    border-radius: 100px;
    white-space: nowrap;
    transition: background var(--transition), transform var(--transition);
}
.cta-button:hover { background: var(--color-accent-hover); transform: translateX(3px); }

/* ---------- Loading / states ---------- */
.loading-state, .error-state {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    padding: 1.5rem 0;
}

.skeleton-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}
.skeleton-card {
    height: 260px;
    border-radius: var(--radius);
    background: linear-gradient(100deg, #eef2f7 30%, #f8fafc 50%, #eef2f7 70%);
    background-size: 200% 100%;
    animation: shimmer 1.3s ease-in-out infinite;
}
@keyframes shimmer {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
}