/*
Theme Name: Podcast Studio Network
Description: Dark editorial theme with Duotone imagery for podcast and audio gear reviews.
Style ID: f3b506
Version: 1.0.0
Text Domain: podcast-studio-netwo
*/

:root {
    --bg: #131b1a;
    --bg-alt: #1f2828;
    --bg-deep: #0d1111;
    --text: #ebefef;
    --text-muted: #97a5a4;
    --accent: #64d8d0;
    --border: #313f3e;
    --spacing: 12px;
    --radius: 16px;
    --radius-sm: 10px;
    --font-head: "Roboto Condensed", "Arial Narrow", Helvetica, sans-serif;
    --font-body: Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
    font-family: var(--font-head);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.01em;
    margin: 0 0 0.5em;
    color: var(--text);
}

.f3b506-container { width: min(1160px, 92%); margin: 0 auto; }

/* ===== 浮动透明 Header ===== */
.f3b506-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease;
    padding: 14px 0;
}
.f3b506-header.solid {
    background: rgba(19, 27, 26, 0.92);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 14px rgba(0, 0, 0, 0.4);
}
.f3b506-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.f3b506-logo {
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text);
}
.f3b506-nav ul {
    display: flex;
    gap: 26px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.f3b506-nav a { font-weight: 500; font-size: 0.95rem; color: var(--text); }
.f3b506-nav a:hover { color: var(--accent); }

/* ===== 卡片 D：无图纯文本 ===== */
.f3b506-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 24px;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.f3b506-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.f3b506-card-cat {
    font-family: var(--font-head);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
}
.f3b506-card-title { font-size: 1.25rem; margin: 10px 0 14px; }
.f3b506-card-rule {
    display: block;
    height: 1px;
    background: var(--border);
    margin: 0 0 14px;
}
.f3b506-card:hover .f3b506-card-rule { background: var(--accent); }

/* ===== 元数据只显日期 ===== */
.f3b506-meta { font-size: 0.85rem; color: var(--text-muted); }

/* ===== 归档页 ===== */
.f3b506-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 32px 0;
}
.f3b506-page-head { padding: 90px 0 8px; }
.f3b506-page-head h1 { font-size: 2.2rem; }

/* ===== 文章页（带右侧栏） ===== */
.f3b506-single-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    padding: 90px 0 36px;
}
.f3b506-single-main { min-width: 0; }
.f3b506-single-thumb { border-radius: var(--radius); overflow: hidden; margin-bottom: 24px; }
.f3b506-single-title { font-size: 2.4rem; }
.f3b506-entry { font-size: 1.05rem; }
.f3b506-entry p { margin: 0 0 1.2em; }
.f3b506-entry ul, .f3b506-entry ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.f3b506-entry li { margin-bottom: 0.5em; }

.f3b506-single-side { position: sticky; top: 90px; align-self: start; }
.f3b506-side-title {
    font-family: var(--font-head);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin: 0 0 14px;
}
.f3b506-related { margin-bottom: 28px; }
.f3b506-related-item {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}
.f3b506-related-thumb { flex: 0 0 64px; }
.f3b506-related-thumb img { width: 64px; height: 48px; object-fit: cover; border-radius: 8px; }
.f3b506-related-t { font-size: 0.9rem; font-weight: 500; line-height: 1.35; color: var(--text); }
.f3b506-side-list { list-style: none; margin: 0; padding: 0; }
.f3b506-side-list li { margin-bottom: 8px; }
.f3b506-side-list a { color: var(--text-muted); }
.f3b506-side-list a:hover { color: var(--accent); }

/* ===== 页脚（订阅型） ===== */
.f3b506-footer {
    background: var(--bg-deep);
    padding: 56px 0 40px;
    margin-top: 48px;
    border-top: 1px solid var(--border);
}
.f3b506-footer-sub {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--border);
}
.f3b506-footer-sub h3 { font-size: 1.6rem; }
.f3b506-footer-sub p { color: var(--text-muted); }
.f3b506-footer-form {
    display: flex;
    gap: 10px;
    max-width: 440px;
    margin: 18px auto 0;
}
.f3b506-footer-form input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--bg-alt);
    color: var(--text);
}
.f3b506-footer-form button {
    padding: 12px 24px;
    background: var(--accent);
    color: var(--bg-deep);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-family: var(--font-head);
    cursor: pointer;
}
.f3b506-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 32px;
}
.f3b506-footer-logo { font-family: var(--font-head); font-weight: 700; font-size: 1.3rem; margin-bottom: 10px; text-transform: uppercase; }
.f3b506-footer-mission { color: var(--text-muted); font-size: 0.9rem; }
.f3b506-footer-col h4 {
    font-family: var(--font-head);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.f3b506-footer-col ul { list-style: none; margin: 0; padding: 0; }
.f3b506-footer-col li { margin-bottom: 8px; }
.f3b506-footer-col a { font-size: 0.9rem; color: var(--text-muted); }
.f3b506-footer-col a:hover { color: var(--accent); }

/* ===== 页面/404 ===== */
.f3b506-page-content { padding: 90px 0 36px; }
.f3b506-404 { text-align: center; padding: 110px 0; }
.f3b506-404 h1 { font-size: 4rem; color: var(--accent); }

/* ===== 搜索 ===== */
.f3b506-searchform { display: flex; gap: 10px; }
.f3b506-searchform input[type="search"] {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--bg-alt);
    color: var(--text);
}
.f3b506-searchform button {
    padding: 12px 22px;
    background: var(--accent);
    color: var(--bg-deep);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 700;
    cursor: pointer;
}

@media (max-width: 860px) {
    .f3b506-grid { grid-template-columns: 1fr; }
    .f3b506-single-layout { grid-template-columns: 1fr; }
    .f3b506-single-side { position: static; }
    .f3b506-footer-grid { grid-template-columns: 1fr; }
    .f3b506-nav { display: none; }
}