/* ======================= Общие стили ======================= */
:root {
    --bg-main: #f8fafc;
    --bg-card: rgba(255,255,255,.75);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent-a: #6366f1;
    --accent-b: #22d3ee;
    --radius-lg: 28px;
    --radius-md: 18px;
}

body {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(1200px 800px at -10% -20%, #e0f2fe, transparent 40%),
        radial-gradient(1000px 600px at 110% 10%, #ede9fe, transparent 45%),
        linear-gradient(180deg, #ffffff, var(--bg-main));
    max-width: 1240px;
    margin: auto;
    padding: 56px 32px;
    color: var(--text-main);
    line-height: 1.7;
}

/* ======================= Заголовок ======================= */
.hero {
    text-align: center;
    margin-bottom: 80px;
}

.wave {
    font-size: clamp(38px, 5vw, 56px);
    font-weight: 900;
    background: linear-gradient(120deg,var(--accent-a),var(--accent-b));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 620px;
    margin: 20px auto 0;
}

/* ======================= Сетка карточек ======================= */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(300px,1fr));
    gap: 32px;
}

/* ======================= Карточка поста ======================= */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow:
        0 10px 30px rgba(15,23,42,.08),
        inset 0 0 0 1px rgba(255,255,255,.6);
    position: relative;
    transition: transform .35s ease, box-shadow .35s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow:
        0 20px 50px rgba(15,23,42,.14),
        inset 0 0 0 1px rgba(255,255,255,.7);
}

.card-line {
    display: none;
}

.card h2 {
    margin-top: 0;
    font-size: 22px;
    line-height: 1.3;
}

.card p.muted {
    color: var(--text-muted);
}

/* === Превью === */
.card .post-thumb {
    width: 100%;
    height: 190px;
    margin: 18px 0 22px;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.card .post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}

.card:hover .post-thumb img {
    transform: scale(1.08);
}

/* ======================= Кнопки ======================= */
.read-more,
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    padding: 12px 18px;
    background: linear-gradient(120deg,var(--accent-a),var(--accent-b));
    color: white;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 10px 20px rgba(99,102,241,.25);
    transition: transform .25s ease, box-shadow .25s ease;
}

.read-more:hover,
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(99,102,241,.35);
}

/* ======================= Пост ======================= */
.post {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    padding: 64px;
    border-radius: 40px;
    box-shadow:
        0 30px 70px rgba(15,23,42,.14),
        inset 0 0 0 1px rgba(255,255,255,.6);
}

.post img {
    max-width: 100%;
    margin: 30px auto;
    border-radius: 24px;
}

/* ======================= Футер ======================= */
.footer {
    margin-top: 120px;
    padding: 64px;
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border-radius: 40px;
    box-shadow:
        0 30px 70px rgba(15,23,42,.14),
        inset 0 0 0 1px rgba(255,255,255,.6);
}

.footer h3 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 48px;
    background: linear-gradient(120deg,var(--accent-a),var(--accent-b));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ======================= Мини-карточки ======================= */
.random-posts {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
    gap: 24px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.random-posts li.card-mini {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    padding: 22px;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 26px rgba(15,23,42,.1);
    transition: transform .3s ease, box-shadow .3s ease;
}

.random-posts li.card-mini:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(15,23,42,.18);
}

.random-posts li.card-mini a {
    color: var(--text-main);
    text-decoration: none;
}

.random-posts li.card-mini p {
    color: var(--text-muted);
}

/* ======================= Категории ======================= */
.categories-grid {
    margin: 60px 0;
}

.categories-grid h3 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 40px;
    background: linear-gradient(120deg,var(--accent-a),var(--accent-b));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.categories-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
    gap: 24px;
}

.category-card {
    background: linear-gradient(180deg,rgba(255,255,255,.85),rgba(255,255,255,.65));
    backdrop-filter: blur(14px);
    padding: 24px;
    border-radius: var(--radius-md);
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    text-align: center;
    box-shadow: 0 12px 30px rgba(15,23,42,.1);
    transition: transform .3s ease, box-shadow .3s ease;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 22px 50px rgba(15,23,42,.18);
}

/* ======================= Адаптив ======================= */
@media (max-width: 640px) {
    body { padding: 24px; }
    .post, .footer { padding: 36px; }
}