/* Shared blog stylesheet — one source of truth for both blog.html (list) and
   api/comms.py's _blog_render() (server-rendered single post).

   Swiss-modernist/minimal direction: a single sans typeface throughout (no
   decorative serif), pure black/white base, one accent color matched to
   my.theflightagent.app's own indigo (#6366f1 / #5b57e6) for brand
   consistency across both sites, and a tight spacing rhythm so more content
   fits per screen. */

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

:root {
    --bg: #000000;
    --surface: #131316;
    --border: rgba(255,255,255,0.1);
    --text: #f5f5f5;
    --text-mute: #8b8b93;
    --body: #c7c7ce;
    --accent: #6366f1;      /* same indigo as the app — primary */
    --accent-2: #22b8cf;    /* cyan — secondary tag color only */
    --accent-gold: #6366f1; /* kept for existing category-tag class names */
    --radius: 10px;
    --nav-bg: rgba(0,0,0,0.92);
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 16px -10px rgba(0,0,0,.5);
}
:root[data-theme="light"] {
    --bg: #ffffff;
    --surface: #fafafa;
    --border: #e4e4e7;
    --text: #18181b;
    --text-mute: #6b6b76;
    --body: #3f3f46;
    --accent: #5b57e6;
    --accent-2: #0891b2;
    --accent-gold: #5b57e6;
    --nav-bg: rgba(255,255,255,0.92);
    --shadow: 0 1px 2px rgba(0,0,0,.04), 0 6px 16px -10px rgba(0,0,0,.14);
}

body { background: var(--bg); color: var(--text); font-family: 'Inter', sans-serif; line-height: 1.55; min-height: 100vh; transition: background .15s ease, color .15s ease; }

/* NAV — shared markup/links across both templates */
nav { display: flex; align-items: center; justify-content: space-between; padding: 0.85rem 2rem; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--nav-bg); backdrop-filter: blur(12px); z-index: 100; }
.nav-logo { font-weight: 700; font-size: 1.05rem; color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 0.5rem; }
.nav-logo svg { flex: none; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a { color: var(--text-mute); text-decoration: none; font-size: 0.88rem; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.btn-nav { background: var(--accent); color: #16130b !important; padding: 0.42rem 1.05rem; border-radius: 7px; font-size: 0.83rem; font-weight: 700; text-decoration: none; transition: opacity 0.2s; }
.btn-nav:hover { opacity: 0.85; }
.theme-toggle { background: var(--surface); border: 1px solid var(--border); color: var(--text-mute); width: 32px; height: 32px; border-radius: 8px; cursor: pointer; font-size: 14px; display: grid; place-items: center; }
.theme-toggle:hover { color: var(--text); }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: inline; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Byline — avatar-initial circle + name, used on cards, the featured post,
   and the single-article header. One component, everywhere. */
.byline { display: flex; align-items: center; gap: 0.5rem; }
.byline-avatar { width: 22px; height: 22px; border-radius: 50%; flex: none; display: grid; place-items: center; font-size: 0.68rem; font-weight: 700; color: #16130b; background: var(--accent); }
.byline-name { font-weight: 500; color: var(--text); font-size: 0.82rem; white-space: nowrap; }

/* HERO — list page eyebrow/title/subtitle */
.hero { text-align: center; padding: 1.9rem 2rem 1.4rem; max-width: 640px; margin: 0 auto; }
.hero-badge { display: inline-block; font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--text-mute); margin-bottom: 0.6rem; }
.hero h1 { font-weight: 400; font-size: clamp(1.35rem, 2.6vw, 1.85rem); line-height: 1.25; margin-bottom: 0.5rem; letter-spacing: -.2px; color: var(--text); }
.hero p { color: var(--text-mute); font-size: 0.88rem; max-width: 54ch; margin: 0 auto; }

/* OFFERS STRIP — reuses the homepage's live public deal feed */
.offers-strip { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; justify-content: center; max-width: 1000px; margin: 0 auto; padding: 0 2rem 1.1rem; }
.offers-label { font-size: 0.74rem; font-weight: 700; color: var(--text-mute); margin-right: 0.2rem; }
.offer-chip { display: inline-flex; align-items: center; gap: 0.35rem; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 0.28rem 0.7rem; font-size: 0.74rem; text-decoration: none; color: var(--text-mute); transition: border-color .2s; }
.offer-chip:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.offer-chip b { color: var(--text); font-weight: 600; }
.offer-chip em { font-style: normal; color: #2ea37c; font-weight: 700; }

/* FILTERS */
.filters { display: flex; gap: 0.4rem; justify-content: center; flex-wrap: wrap; padding: 0 2rem 1.4rem; }
.filter-pill { background: transparent; border: 1px solid var(--border); color: var(--text-mute); padding: 0.32rem 0.85rem; border-radius: 16px; font-size: 0.78rem; cursor: pointer; transition: all 0.2s; }
.filter-pill:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.filter-pill.active { background: var(--accent); border-color: var(--accent); color: #16130b; font-weight: 600; }

/* FEATURED — the single most recent post, shown large */
.featured-wrap { max-width: 1120px; margin: 0 auto; padding: 0 2rem 1.75rem; }
.featured-post { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; text-decoration: none; color: inherit; }
.featured-img, .featured-img-placeholder { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: var(--radius); display: block; background: var(--surface); }
.featured-img-placeholder { display: flex; align-items: center; justify-content: center; font-size: 2.5rem; }
.featured-title { font-weight: 600; font-size: clamp(1.15rem, 2.1vw, 1.55rem); line-height: 1.3; margin: 0.7rem 0 0.6rem; letter-spacing: -.2px; }
.featured-summary { color: var(--text-mute); line-height: 1.55; margin-bottom: 0.9rem; font-size: 0.92rem; }
.featured-link { color: var(--accent); font-weight: 600; font-size: 0.85rem; display: inline-flex; align-items: center; gap: 0.35rem; }
.featured-meta { display: flex; align-items: center; gap: 0.9rem; margin-top: 0.9rem; color: var(--text-mute); font-size: 0.76rem; }

/* SECTION HEAD */
.section-head { display: flex; align-items: baseline; justify-content: space-between; max-width: 1120px; margin: 0 auto; padding: 1.4rem 2rem 0.9rem; border-top: 1px solid var(--border); }
.section-head h2 { font-size: 1.05rem; font-weight: 600; letter-spacing: -.1px; }
.section-head p { color: var(--text-mute); font-size: 0.8rem; }

/* GRID / CARD */
.grid-wrap { max-width: 1120px; margin: 0 auto; padding: 0 2rem 2.5rem; }
.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 1.1rem; }
.post-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: border-color 0.2s; cursor: pointer; text-decoration: none; color: inherit; display: flex; flex-direction: column; }
.post-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.card-thumb { width: 100%; height: 140px; object-fit: cover; display: block; background: var(--border); }
.card-thumb-placeholder { width: 100%; height: 140px; background: color-mix(in srgb, var(--accent) 10%, transparent); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; }
.card-cat { display: inline-block; font-size: 0.64rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; padding: 0.16rem 0.5rem; border-radius: 4px; margin-bottom: 0.5rem; }
.cat-deals { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.cat-tips { background: rgba(16,185,129,0.14); color: #2ea37c; }
.cat-route-analysis { background: color-mix(in srgb, var(--accent-2) 14%, transparent); color: var(--accent-2); }
.cat-guide { background: rgba(139,92,246,0.14); color: #9a8ce0; }
.cat-news { background: rgba(224,90,74,0.14); color: #e07a68; }
.card-body { padding: 0.85rem 0.95rem 0.75rem; flex: 1; display: flex; flex-direction: column; gap: 0.35rem; }
.card-title { font-size: 0.92rem; font-weight: 600; line-height: 1.35; }
.card-summary { font-size: 0.79rem; color: var(--text-mute); line-height: 1.45; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer { display: flex; align-items: center; justify-content: space-between; padding: 0.6rem 0.95rem; border-top: 1px solid var(--border); font-size: 0.72rem; color: var(--text-mute); gap: 0.6rem; }

/* LOADING / EMPTY */
.state-msg { text-align: center; padding: 3rem 2rem; color: var(--text-mute); }
.state-msg .icon { font-size: 2rem; margin-bottom: 0.75rem; }

/* SINGLE ARTICLE */
.article-wrap { max-width: 680px; margin: 0 auto; padding: 2rem 2rem 3.5rem; }
.back-link { display: inline-flex; align-items: center; gap: 0.35rem; color: var(--text-mute); text-decoration: none; font-size: 0.82rem; margin-bottom: 1.5rem; }
.post-cat { display: inline-block; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; padding: 0.18rem 0.55rem; border-radius: 4px; margin-bottom: 0.8rem; }
.post-title { font-weight: 700; font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.25; margin-bottom: 1rem; letter-spacing: -.3px; }
.post-byline-row { display: flex; align-items: center; gap: 1.2rem; margin-bottom: 1.75rem; padding-bottom: 1.4rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.post-meta-extra { display: flex; align-items: center; gap: 1rem; color: var(--text-mute); font-size: 0.8rem; flex-wrap: wrap; }
.post-meta-extra span { display: flex; align-items: center; gap: 0.3rem; }
.like-btn { margin-left: auto; display: inline-flex; align-items: center; gap: 0.4rem; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 0.32rem 0.8rem; font-size: 0.82rem; font-weight: 600; color: var(--text-mute); cursor: pointer; transition: border-color .2s; }
.like-btn:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.like-btn.liked { color: var(--text); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.like-btn:disabled { cursor: default; opacity: .85; }
.post-hero-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius); display: block; margin-bottom: 1.75rem; background: var(--surface); }
.post-content { font-size: 0.98rem; line-height: 1.7; color: var(--body); }
.post-content h2 { font-size: 1.25rem; font-weight: 700; color: var(--text); margin: 1.9rem 0 0.8rem; letter-spacing: -.1px; }
.post-content h3 { font-size: 1.05rem; font-weight: 600; color: var(--text); margin: 1.5rem 0 0.6rem; }
.post-content p { margin-bottom: 1.05rem; }
.post-content ul, .post-content ol { margin: 0 0 1.05rem 1.4rem; }
.post-content li { margin-bottom: 0.4rem; }
.post-content strong { color: var(--text); font-weight: 600; }
.post-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.post-content table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; }
.post-content td, .post-content th { border: 1px solid var(--border); padding: 0.55rem 0.7rem; text-align: left; }
.post-content blockquote { border-left: 3px solid var(--accent); padding: 0.65rem 1.1rem; background: color-mix(in srgb, var(--accent) 6%, transparent); border-radius: 0 6px 6px 0; margin: 1.25rem 0; color: var(--text-mute); font-style: italic; font-size: 0.98rem; }
.post-cta { margin-top: 2.25rem; padding: 1.5rem; background: color-mix(in srgb, var(--accent) 8%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent); border-radius: var(--radius); text-align: center; }
.post-cta h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; }
.post-cta p { color: var(--text-mute); font-size: 0.86rem; margin-bottom: 1.05rem; }
.btn-cta { display: inline-block; background: var(--accent); color: #16130b; padding: 0.6rem 1.5rem; border-radius: 7px; font-weight: 700; text-decoration: none; border: none; cursor: pointer; font: inherit; }
.share-row { margin-top: 1.9rem; padding-top: 1.4rem; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 0.85rem; flex-wrap: wrap; }
.share-row span { font-size: 0.82rem; color: var(--text-mute); }
.share-btn { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.35rem 0.9rem; border-radius: 7px; font-size: 0.79rem; font-weight: 600; text-decoration: none; border: 1px solid var(--border); color: var(--text-mute); background: var(--surface); }

/* COMMENTS */
.comments-section { margin-top: 2.25rem; padding-top: 1.4rem; border-top: 1px solid var(--border); }
.comments-head { font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; }
.comments-empty { color: var(--text-mute); font-size: 0.86rem; }
.comment-item { padding: 0.8rem 0; border-bottom: 1px solid var(--border); }
.comment-item:last-child { border-bottom: none; }
.comment-item-head { display: flex; align-items: baseline; gap: 0.55rem; margin-bottom: 0.25rem; }
.comment-item-head b { font-size: 0.85rem; color: var(--text); }
.comment-item-head small { color: var(--text-mute); font-size: 0.72rem; }
.comment-item p { font-size: 0.87rem; color: var(--body); line-height: 1.5; }
.comment-form-guest { margin-top: 1.4rem; display: flex; flex-direction: column; gap: 0.6rem; max-width: 460px; }
.comment-form-guest input, .comment-form-guest textarea { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 0.55rem 0.8rem; font-family: inherit; font-size: 0.87rem; color: var(--text); resize: vertical; }
.comment-form-guest input:focus, .comment-form-guest textarea:focus { outline: none; border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.comment-note { font-size: 0.76rem; color: var(--text-mute); margin: -0.2rem 0 0.2rem; }
.comment-form-guest .btn-cta { align-self: flex-start; }
#comment-status { font-size: 0.8rem; color: var(--accent); }

/* FOOTER */
footer { border-top: 1px solid var(--border); padding: 1.5rem; text-align: center; color: var(--text-mute); font-size: 0.8rem; }
footer a { color: var(--text-mute); text-decoration: none; margin: 0 0.65rem; }
footer a:hover { color: var(--text); }

@media (max-width: 760px) {
    .featured-post { grid-template-columns: 1fr; gap: 1rem; }
}

@media (max-width: 640px) {
    nav { padding: 0.7rem 1rem; }
    .nav-links { gap: 0.65rem; }
    .nav-links a:not(.btn-nav) { display: none; }
    .btn-nav { padding: 0.35rem 0.8rem; font-size: 0.8rem; }
    .hero { padding: 1.4rem 1.25rem 1.1rem; }
    .hero p { font-size: 0.84rem; }
    .filters { padding: 0 1rem 1rem; gap: 0.35rem; overflow-x: auto; flex-wrap: nowrap; justify-content: flex-start; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .filters::-webkit-scrollbar { display: none; }
    .filter-pill { flex-shrink: 0; font-size: 0.76rem; padding: 0.3rem 0.75rem; }
    .featured-wrap { padding: 0 1rem 1.25rem; }
    .section-head { padding: 1.1rem 1rem 0.75rem; }
    .grid-wrap { padding: 0 1rem 2rem; }
    .posts-grid { grid-template-columns: 1fr; gap: 0.8rem; }
    .card-thumb, .card-thumb-placeholder { height: 150px; }
    .card-title { font-size: 0.9rem; }
    .card-summary { font-size: 0.79rem; }
    .card-footer { font-size: 0.72rem; }
    .article-wrap { padding: 1.25rem 1rem 2.25rem; }
    .post-title { font-size: 1.35rem; }
    .post-content { font-size: 0.93rem; }
    .post-content table { display: block; overflow-x: auto; }
    .post-content img { max-width: 100%; height: auto; }
    footer { padding: 1.1rem 1rem; }
    footer a { margin: 0 0.35rem; }
}