:root {
    --bg: #f4f6fa;
    --panel: #ffffff;
    --text: #172033;
    --muted: #667085;
    --line: #dde3ec;
    --accent: #4967d8;
    --accent-dark: #334db4;
    --danger: #bd2c3a;
    --danger-dark: #94202b;
    --success-bg: #eaf8ef;
    --success-text: #25653a;
    --warning-bg: #fff5d8;
    --warning-text: #7b5812;
    --error-bg: #fdecef;
    --error-text: #8f2531;
    --radius: 16px;
    --shadow: 0 14px 40px rgba(22, 32, 55, .08);
}
* { box-sizing: border-box; }
html { min-height: 100%; }
body { margin: 0; min-height: 100%; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--text); background: var(--bg); line-height: 1.5; }
a { color: var(--accent); }
button, input, select { font: inherit; }
.shell { width: min(1160px, calc(100% - 32px)); margin-inline: auto; }
.site-header { background: #11192b; color: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.15); }
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; text-decoration: none; font-weight: 750; letter-spacing: -.01em; }
.brand-mark { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--accent); font-size: 20px; }
.nav { display: flex; align-items: center; gap: 18px; font-size: .94rem; }
.nav a, .link-button { color: #dce3f7; text-decoration: none; background: none; border: 0; padding: 8px 0; cursor: pointer; }
.nav a:hover, .nav a.active, .link-button:hover { color: #fff; }
.nav a.active { border-bottom: 2px solid #89a0ff; }
.signed-in { color: #aeb9d3; }
.inline-form { display: inline; margin: 0; }
.main-content { padding-block: 42px 56px; min-height: calc(100vh - 128px); }
.site-footer { color: var(--muted); text-align: center; font-size: .87rem; padding: 0 0 28px; }
h1, h2, h3 { line-height: 1.16; margin-top: 0; letter-spacing: -.025em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 12px; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.08rem; }
p { color: var(--muted); }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .11em; font-size: .76rem; font-weight: 800; }
.lede { font-size: 1.04rem; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: clamp(22px, 4vw, 36px); }
.auth-panel { max-width: 560px; margin: 24px auto; }
.stacked-form { display: grid; gap: 18px; margin-top: 24px; }
.stacked-form fieldset { border: 1px solid var(--line); border-radius: 12px; padding: 18px; display: grid; gap: 14px; }
.stacked-form legend { font-weight: 750; padding-inline: 8px; }
label { display: grid; gap: 7px; font-weight: 650; color: #344054; }
input[type="text"], input[type="password"], input[type="search"], select { width: 100%; border: 1px solid #cfd7e4; border-radius: 10px; background: #fff; color: var(--text); padding: 11px 13px; outline: none; }
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(73, 103, 216, .14); }
.button { appearance: none; border: 1px solid transparent; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 10px 15px; font-weight: 750; text-decoration: none; cursor: pointer; transition: .16s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--accent); color: #fff; }
.button-primary:hover { background: var(--accent-dark); color: #fff; }
.button-secondary { background: #fff; color: #33415f; border-color: #cbd4e2; }
.button-secondary:hover { background: #f7f9fc; }
.button-danger { background: var(--danger); color: #fff; }
.button-danger:hover { background: var(--danger-dark); }
.button-small { padding: 7px 10px; font-size: .85rem; }
.button-wide { width: 100%; }
.notice { border-radius: 10px; padding: 12px 14px; margin-bottom: 18px; font-weight: 600; }
.notice-success { background: var(--success-bg); color: var(--success-text); }
.notice-warning { background: var(--warning-bg); color: var(--warning-text); }
.notice-error { background: var(--error-bg); color: var(--error-text); }
.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 28px; }
.page-heading p { max-width: 760px; margin-bottom: 0; }
.toolbar { display: flex; justify-content: flex-end; margin-bottom: 20px; }
.search-box { width: min(420px, 100%); }
.audio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.audio-card { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 20px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: 0 7px 25px rgba(22, 32, 55, .05); }
.cover-wrap { align-self: start; }
.cover { width: 132px; aspect-ratio: 1; object-fit: cover; border-radius: 12px; display: block; background: #e8ecf4; }
.cover-placeholder { display: grid; place-items: center; background: linear-gradient(145deg, #dce4ff, #edf0f7); color: var(--accent); font-size: 3rem; }
.audio-content { min-width: 0; display: flex; flex-direction: column; align-items: flex-start; }
.audio-content h2 { font-size: 1.3rem; margin-bottom: 4px; overflow-wrap: anywhere; }
.subtitle { margin: 0 0 13px; font-weight: 650; color: #58657d; }
.metadata-list { margin: 0 0 17px; display: grid; gap: 4px; width: 100%; font-size: .87rem; }
.metadata-list div { display: grid; grid-template-columns: 56px minmax(0,1fr); gap: 8px; }
.metadata-list dt { color: #8992a4; }
.metadata-list dd { margin: 0; color: #45516a; overflow-wrap: anywhere; }
.download-button { margin-top: auto; }
.empty-state { text-align: center; padding: 48px 24px; }
.empty-state h2, .empty-state h3 { margin-bottom: 6px; }
.empty-icon { display: inline-grid; place-items: center; width: 70px; height: 70px; border-radius: 22px; background: #e7ecff; color: var(--accent); font-size: 2.2rem; margin-bottom: 14px; }
.upload-panel, .management-panel, .password-panel { margin-bottom: 24px; }
.drop-zone { border: 2px dashed #b7c2d7; border-radius: 15px; min-height: 210px; display: grid; place-items: center; align-content: center; gap: 7px; text-align: center; padding: 26px; color: #526078; cursor: pointer; background: #fafbfe; transition: .18s ease; }
.drop-zone:hover, .drop-zone.dragging, .drop-zone:focus { border-color: var(--accent); background: #f1f4ff; outline: none; }
.drop-icon { font-size: 2rem; color: var(--accent); }
.drop-zone small { color: #8b94a7; }
.upload-queue { display: grid; gap: 10px; margin-top: 16px; }
.upload-item { display: grid; grid-template-columns: minmax(120px, 1fr) minmax(120px, 240px) minmax(130px, auto); align-items: center; gap: 13px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: .87rem; }
.upload-name { font-weight: 700; overflow-wrap: anywhere; }
.progress-track { height: 8px; background: #e6eaf1; border-radius: 99px; overflow: hidden; }
.progress-track span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .16s linear; }
.upload-item.success .progress-track span { background: #3a9a57; }
.upload-item.error .progress-track span { background: var(--danger); }
.upload-status { color: var(--muted); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 20px; }
.section-heading h2 { margin-bottom: 3px; }
.section-heading p { margin: 0; }
.admin-list { display: grid; gap: 12px; }
.admin-file { display: grid; grid-template-columns: 28px 78px minmax(0,1fr) auto; align-items: center; gap: 15px; border: 1px solid var(--line); border-radius: 13px; padding: 13px; }
.select-box { display: block; }
.file-select { width: 18px; height: 18px; }
.admin-thumb img, .mini-placeholder { width: 78px; height: 78px; object-fit: cover; border-radius: 10px; }
.mini-placeholder { display: grid; place-items: center; background: #e8ecf8; color: var(--accent); font-size: 1.8rem; }
.admin-file-main { min-width: 0; }
.admin-file-main h3 { margin-bottom: 3px; overflow-wrap: anywhere; }
.admin-file-main > p { margin: 0 0 7px; font-size: .9rem; }
.admin-meta { display: flex; flex-wrap: wrap; gap: 7px 14px; font-size: .78rem; color: #7a8498; }
.admin-meta span { overflow-wrap: anywhere; }
.admin-actions { display: flex; flex-direction: column; align-items: stretch; gap: 7px; }
.admin-actions form { margin: 0; }
.admin-actions .button { width: 100%; }
.rename-details { margin-top: 9px; font-size: .85rem; }
.rename-details summary { cursor: pointer; color: var(--accent); }
.inline-edit-form { display: flex; gap: 8px; margin-top: 9px; }
.inline-edit-form input { min-width: 220px; }
.password-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; align-items: end; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 820px) {
    .header-inner, .page-heading, .section-heading { align-items: flex-start; flex-direction: column; }
    .header-inner { padding-block: 14px; }
    .nav { flex-wrap: wrap; gap: 12px 17px; }
    .signed-in { width: 100%; }
    .admin-file { grid-template-columns: 24px 68px minmax(0,1fr); }
    .admin-thumb img, .mini-placeholder { width: 68px; height: 68px; }
    .admin-actions { grid-column: 2 / -1; flex-direction: row; flex-wrap: wrap; }
    .password-form { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
    .shell { width: min(100% - 20px, 1160px); }
    .main-content { padding-top: 28px; }
    .audio-card { grid-template-columns: 94px minmax(0,1fr); gap: 14px; padding: 13px; }
    .cover { width: 94px; border-radius: 9px; }
    .metadata-list div { grid-template-columns: 48px minmax(0,1fr); }
    .upload-item { grid-template-columns: 1fr; }
    .admin-file { grid-template-columns: 24px 58px minmax(0,1fr); gap: 10px; }
    .admin-thumb img, .mini-placeholder { width: 58px; height: 58px; }
    .inline-edit-form { flex-direction: column; }
    .inline-edit-form input { min-width: 0; }
}