:root {
    --bg: #05060f;
    --surface: #0d1020;
    --surface-2: #12162a;
    --text: #f4f6ff;
    --muted: #b7bfd6;
    --accent: #9b30ff;
    --border: #242b46;
    --radius: 16px;
    --container: 1200px;
    --shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

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

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: radial-gradient(circle at top, #141635 0%, var(--bg) 55%);
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(10px);
    background: rgba(5, 6, 15, 0.7);
    border-bottom: 1px solid rgba(155, 48, 255, 0.2);
}

.site-header {
    width: min(var(--container), 100% - 3rem);
    margin: 0 auto;
    padding: 1.1rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.site-title a:hover {
    color: var(--accent);
}

.site-description {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

/* Layout */
.home-hero,
.post-page__hero {
    position: relative;
    min-height: clamp(300px, 55vh, 520px);
    overflow: hidden;
    isolation: isolate;
}

.home-hero__background,
.post-page__hero-background {
    position: absolute;
    inset: 0;
}

.home-hero__image,
.post-page__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.75;
}

.home-hero__overlay,
.post-page__hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(5, 6, 15, 0.25) 0%, rgba(5, 6, 15, 0.9) 75%, var(--bg) 100%);
    z-index: 1;
}

.home-hero__content,
.post-page__hero-content {
    position: relative;
    z-index: 2;
    width: min(var(--container), 100% - 3rem);
    margin: 0 auto;
    padding: clamp(4rem, 10vw, 8rem) 0 clamp(2rem, 6vw, 4rem);
}

.home-hero__eyebrow {
    margin: 0 0 0.7rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--accent);
}

.home-hero__title,
.post-page__title {
    margin: 0;
    max-width: 18ch;
    font-size: clamp(2rem, 5vw, 3.7rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.home-hero__subtitle {
    margin: 1rem 0 0;
    max-width: 58ch;
    color: var(--muted);
    font-size: clamp(1rem, 2vw, 1.1rem);
}

.home-main,
.post-page__main {
    width: min(var(--container), 100% - 3rem);
    margin: 0 auto;
    padding: 2.5rem 0 4.5rem;
}

.post-feed__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.4rem;
}

.post-card {
    background: linear-gradient(180deg, var(--surface-2), var(--surface));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.post-card__image-link {
    display: block;
    background: #090c19;
    min-height: 190px;
}

.post-card__image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.post-card__content {
    padding: 1.2rem 1.2rem 1.4rem;
}

.post-card__title {
    margin: 0 0 0.7rem;
    font-size: 1.25rem;
    line-height: 1.25;
}

.post-card__title a:hover {
    color: var(--accent);
}

.post-card__excerpt {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

/* Post */
.post-page__back-link {
    display: inline-block;
    margin-bottom: 1.2rem;
    padding: 0.45rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.82rem;
    color: var(--muted);
}

.post-page__back-link:hover {
    border-color: var(--accent);
    color: var(--text);
}

.post-page__container {
    width: min(840px, 100%);
    margin: 0 auto;
}

.post-page__feature {
    margin: 0 0 2rem;
}

.post-page__feature-image {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    object-fit: cover;
}

.post-page__content {
    color: #e9ecff;
    font-size: 1.05rem;
}

.post-page__content > * {
    margin: 0 0 1.2rem;
}

.post-page__content h2,
.post-page__content h3,
.post-page__content h4 {
    margin-top: 2rem;
    line-height: 1.25;
}

.post-page__content a {
    color: #c48aff;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.post-page__content blockquote {
    margin: 1.5rem 0;
    padding: 0.8rem 1rem;
    border-left: 3px solid var(--accent);
    background: rgba(155, 48, 255, 0.08);
}

/* Footer */
footer {
    border-top: 1px solid rgba(155, 48, 255, 0.2);
    background: rgba(5, 6, 15, 0.85);
}

.site-footer {
    width: min(var(--container), 100% - 3rem);
    margin: 0 auto;
    padding: 1.4rem 0 2rem;
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
}

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

@media (max-width: 768px) {
    .site-header {
        width: min(var(--container), 100% - 2rem);
        align-items: flex-start;
        flex-direction: column;
    }

    .home-hero__content,
    .post-page__hero-content,
    .home-main,
    .post-page__main,
    .site-footer {
        width: min(var(--container), 100% - 2rem);
    }

    .post-feed__grid {
        grid-template-columns: 1fr;
    }

    .post-card__image {
        height: 200px;
    }
}