/* Người Thích Viết — bố cục tham khảo Compose (Framer), viết lại thuần CSS.
   Màu học từ bản "Incoming" 25/08/2026: nền gần đen #03030d, chữ trắng ngà,
   ánh sáng xanh-tím rgba(67,83,255)/rgba(93,69,255) làm điểm nhấn glow.
   Font: một font duy nhất — Lora, có dấu tiếng Việt chuẩn. */
:root {
  --bg: #03030d;
  --surface: #0a0a1e;
  --surface-2: #14142f;
  --ink: #f5f6ff;
  --ink-2: #dfe2ff;
  --ink-3: #b7bbe6;
  --muted: #9191b8;
  --line: rgba(255, 255, 255, .10);
  --pill: rgba(255, 255, 255, .06);
  --pill-hover: rgba(255, 255, 255, .11);
  --accent: #4353ff;
  --accent-2: #5d45ff;
  --radius: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5), 0 6px 18px rgba(67, 83, 255, .14);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, .55), 0 18px 44px rgba(93, 69, 255, .22);
  --ease: cubic-bezier(.2, .8, .2, 1);
  --fast: 160ms;
  --base: 260ms;
  --sans: "Lora", Georgia, "Times New Roman", serif;
  color-scheme: dark;
}
/* ---------- giao diện sáng (tuỳ chọn, bấm nút mặt trời/mặt trăng ở đầu trang) */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #fbfbff;
  --surface: #ffffff;
  --surface-2: #f2f2fa;
  --ink: #14142b;
  --ink-2: #2c2c55;
  --ink-3: #57577e;
  --muted: #6d6d90;
  --line: rgba(20, 20, 43, .12);
  --pill: rgba(20, 20, 43, .05);
  --pill-hover: rgba(20, 20, 43, .09);
  --shadow-sm: 0 1px 2px rgba(20, 20, 43, .06), 0 6px 18px rgba(67, 83, 255, .10);
  --shadow-md: 0 4px 10px rgba(20, 20, 43, .08), 0 18px 44px rgba(93, 69, 255, .14);
}
:root[data-theme="light"] .site-header { background: rgba(255, 255, 255, .86); }
:root[data-theme="light"] .btn-danger { color: #b42318; }
:root[data-theme="light"] .btn-danger:hover { background: rgba(255, 90, 74, .08); }
:root[data-theme="light"] .form input,
:root[data-theme="light"] .form select,
:root[data-theme="light"] .form textarea { border-color: rgba(20, 20, 43, .16); }
:root[data-theme="light"] .form input:focus,
:root[data-theme="light"] .form select:focus,
:root[data-theme="light"] .form textarea:focus { box-shadow: 0 0 0 3px rgba(93, 69, 255, .16); }
:root[data-theme="light"] .form-msg { color: #b42318; }
:root[data-theme="light"] .form-msg.ok { color: #067647; }
:root[data-theme="light"] .preview-box { border-color: rgba(20, 20, 43, .20); }
:root[data-theme="light"] .admin-row .draft { color: #b54708; }
:root[data-theme="light"] .badge-pending, :root[data-theme="light"] .badge-ok { background: #fff4e5; color: #b54708; }
:root[data-theme="light"] .badge-ok { background: #edfaed; color: #067647; }
:root[data-theme="light"] .admin-row.is-pending { background: #fffaf3; }
:root[data-theme="light"] .btn-ok { background: #edfaed; color: #067647; }
:root[data-theme="light"] .btn-ok:hover { background: #d1fae5; }
:root[data-theme="light"] .cover-letter { color: rgba(20, 20, 43, .08); }
:root[data-theme="light"] .card:hover .cover-letter { color: rgba(20, 20, 43, .14); }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--sans); font-weight: 500; letter-spacing: -.005em; line-height: 1.2; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(30px, 4.4vw, 52px); }
h2 { font-size: clamp(22px, 2.8vw, 30px); }
h3 { font-size: 21px; line-height: 1.3; }
p { margin: 0; text-wrap: pretty; }
.keep-together { white-space: nowrap; }
.wrap { width: min(1200px, 100% - 40px); margin-inline: auto; }
.section { padding-block: 28px; }
.center { text-align: center; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.eyebrow { font-size: 13px; font-weight: 500; color: var(--muted); letter-spacing: .02em; margin-bottom: 14px; }
.lead { font-size: 18px; color: var(--ink-3); max-width: 62ch; }
.tiny { font-size: 13px; color: var(--muted); font-weight: 400; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 10px; }

/* ---------- nút */
.btn {
  position: relative;
  display: inline-flex; align-items: center; gap: 6px;
  font: 600 14px/1 var(--sans);
  color: var(--ink);
  background: var(--pill);
  border: 0; border-radius: 10px;
  padding: 11px 16px;
  cursor: pointer;
  transition: background-color var(--fast) var(--ease), box-shadow var(--base) var(--ease), transform var(--base) var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.btn::before { content: ""; position: absolute; inset: -6px; border-radius: inherit; }
.btn .arrow { display: inline-block; transition: transform var(--base) var(--ease); }
.btn:hover { background: var(--pill-hover); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.btn:hover .arrow { transform: translateX(3px); }
.btn:active { transform: translateY(0) scale(.97); box-shadow: none; transition-duration: 80ms; }
.btn:disabled { opacity: .5; pointer-events: none; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; padding: 15px 22px; border-radius: 12px; font-size: 15px; }
.btn-primary:hover { filter: brightness(1.08); box-shadow: var(--shadow-md); }
.btn-danger { color: #ffb0a6; }
.btn-danger:hover { background: rgba(255, 90, 74, .14); }

/* ---------- header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(3, 3, 13, .88); border-bottom: 1px solid var(--line); transition: box-shadow var(--base) var(--ease); }
.site-header.scrolled { box-shadow: 0 10px 30px rgba(67, 83, 255, .16); -webkit-backdrop-filter: saturate(160%) blur(14px); backdrop-filter: saturate(160%) blur(14px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-family: var(--sans); font-weight: 500; font-size: 24px; letter-spacing: -.005em; transition: opacity var(--fast); white-space: nowrap; }
.logo em { font-style: italic; font-weight: 400; color: var(--ink-3); }
.logo:hover { opacity: .75; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a:not(.btn) { position: relative; font-size: 14px; font-weight: 500; padding: 8px 12px; color: var(--ink-3); transition: color var(--fast); }
.nav a:not(.btn)::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 1.5px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transform: scaleX(0); transform-origin: left; transition: transform var(--base) var(--ease); }
.nav a:not(.btn):hover, .nav a[aria-current] { color: var(--ink); }
.nav a:not(.btn):hover::after, .nav a[aria-current]::after { transform: scaleX(1); }
.nav-cta { margin-left: 8px; }
.header-right { display: flex; align-items: center; gap: 4px; }
.theme-btn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; background: none; border: 0; padding: 0; cursor: pointer; color: var(--ink-3); border-radius: 10px; transition: background-color var(--fast), color var(--fast); }
.theme-btn:hover { background: var(--pill); color: var(--ink); }
.theme-btn .i-sun { display: block; }
.theme-btn .i-moon { display: none; }
:root[data-theme="light"] .theme-btn .i-sun { display: none; }
:root[data-theme="light"] .theme-btn .i-moon { display: block; }
.menu-btn { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--ink); border-radius: 10px; }
@media (max-width: 809px) {
  .menu-btn { display: inline-flex; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; flex-direction: column; align-items: stretch; background: var(--surface); border-bottom: 1px solid var(--line); padding: 8px 20px 16px; box-shadow: var(--shadow-md); }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 12px 4px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .nav a:not(.btn)::after { display: none; }
  .nav-cta { margin: 12px 0 0; justify-content: center; }
}

/* ---------- cổng vào (học nguyên khung bản "Incoming" 25/08: nền đen, 2 quầng sáng, glow) */
.gate {
  position: relative;
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg);
  overflow: hidden;
  isolation: isolate;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.gate-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(30% 24% at 16% 30%, rgba(67, 83, 255, .22) 0%, transparent 70%),
    radial-gradient(28% 22% at 86% 32%, rgba(93, 69, 255, .20) 0%, transparent 70%),
    radial-gradient(55% 42% at 50% 96%, rgba(93, 69, 255, .14) 0%, transparent 70%);
  filter: blur(6px);
  transition: filter var(--base) var(--ease), opacity var(--base) var(--ease);
}
.gate:hover .gate-glow { filter: blur(4px); opacity: 1.15; }
.gate-content { position: relative; max-width: 640px; padding: 40px 24px; }
.gate .eyebrow { font-size: 12px; letter-spacing: .22em; text-transform: uppercase; }
.gate-title {
  display: block;
  font-family: var(--sans); font-weight: 500;
  font-size: clamp(32px, 6vw, 58px);
  color: var(--ink-2);
  text-shadow: 0 0 12px rgba(145, 153, 255, .22), 0 0 40px rgba(70, 85, 255, .18);
}
.gate-title em { font-style: italic; font-weight: 400; color: var(--ink-3); }
.gate-desc { display: block; margin-top: 18px; color: var(--ink-3); font-size: clamp(14px, 2vw, 17px); }
.gate-line {
  display: block;
  width: 84px; height: 1px; margin: 30px auto 0;
  background: linear-gradient(90deg, transparent, rgba(145, 155, 255, .9), transparent);
  box-shadow: 0 0 15px rgba(103, 115, 255, .6);
}
.gate-cta {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 30px; padding: 12px 22px;
  font: 600 14px/1 var(--sans); color: var(--ink);
  background: var(--pill); border: 1px solid var(--line); border-radius: 999px;
  transition: background-color var(--fast) var(--ease), box-shadow var(--base) var(--ease), transform var(--base) var(--ease);
}
.gate-cta .arrow { display: inline-block; transition: transform var(--base) var(--ease); }
.gate:hover .gate-cta { background: var(--pill-hover); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.gate:hover .gate-cta .arrow { transform: translateX(4px); }
.gate:active .gate-cta { transform: translateY(0) scale(.96); }
@media (max-width: 480px) { .gate-content { padding: 32px 20px; } }

/* ---------- hero (ánh sáng xanh-tím trên nền tối, học từ bản Incoming) */
.hero { padding-top: 24px; }
.hero-card {
  max-width: 880px;
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(40px, 7vw, 72px) clamp(20px, 6vw, 64px);
  text-align: center;
  background:
    radial-gradient(42% 60% at 14% 20%, rgba(67, 83, 255, .26) 0%, transparent 70%),
    radial-gradient(38% 55% at 88% 22%, rgba(93, 69, 255, .22) 0%, transparent 70%),
    radial-gradient(60% 70% at 50% 105%, rgba(93, 69, 255, .16) 0%, transparent 70%),
    var(--surface);
}
.hero-card h1 { max-width: 21ch; margin: 0 auto; }
.hero-card h1 em { font-style: italic; font-weight: 400; color: var(--ink-3); }
.hero-card .eyebrow { margin-bottom: 18px; }
.hero-cta { margin: 28px 0 0; }

/* ---------- "trải lòng" cuối bài viết */
.confide { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.confide-trigger {
  background: none; border: none; padding: 0; cursor: pointer; text-align: left;
  font-family: var(--font-serif, serif); font-style: italic; font-size: 18px; color: var(--ink-2);
}
.confide-trigger:hover { color: var(--ink-1); }
.confide-form { margin-top: 16px; display: grid; gap: 12px; max-width: 640px; }
.confide-form textarea { width: 100%; resize: vertical; }

.section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.page-head { padding-top: 40px; }
.page-head .lead { margin-top: 12px; }

/* ---------- thẻ bài */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.grid-more { display: contents; }
.grid-more[hidden] { display: none; }
@media (max-width: 1023px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 639px) { .grid { grid-template-columns: 1fr; gap: 16px; } }
.card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); transition: transform var(--base) var(--ease), box-shadow var(--base) var(--ease), border-color var(--base); -webkit-tap-highlight-color: transparent; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(103, 115, 255, .35); }
.card:active { transform: translateY(-1px); transition-duration: 80ms; }
.card-body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 10px; }
.card-title { transition: color var(--fast); }
.card:hover .card-title { color: var(--ink-2); }
.card-excerpt { color: var(--ink-3); }
.card-featured { display: grid; grid-template-columns: 1fr 1fr; }
.card-featured .cover { aspect-ratio: 4 / 3; height: 100%; }
.card-featured .card-body { padding: clamp(20px, 4vw, 48px); justify-content: center; gap: 14px; }
.card-featured .card-title { font-size: clamp(26px, 3vw, 38px); }
.card-no-image .card-body { padding: 22px; }
.card-featured.card-no-image { display: block; }
.card-featured.card-no-image .card-body { max-width: 820px; padding: clamp(26px, 5vw, 54px); }
@media (max-width: 809px) { .card-featured { grid-template-columns: 1fr; } .card-featured .cover { height: auto; } }

.cover { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--pill); }
.cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 700ms var(--ease); }
.card:hover .cover img { transform: scale(1.04); }
.cover-gen { background: radial-gradient(70% 90% at 20% 20%, var(--g1) 0%, transparent 65%), radial-gradient(70% 90% at 85% 30%, var(--g2) 0%, transparent 65%), linear-gradient(var(--ang), var(--g3) 0%, var(--surface) 100%); display: grid; place-items: center; }
.cover-letter { font-family: var(--sans); font-style: italic; font-size: clamp(80px, 16vw, 150px); color: rgba(245, 246, 255, .10); line-height: 1; user-select: none; transition: transform 700ms var(--ease), color var(--base); }
.card:hover .cover-letter { transform: scale(1.06) rotate(-3deg); color: rgba(245, 246, 255, .18); }

.chip { display: inline-flex; align-items: center; align-self: flex-start; font-size: 12px; font-weight: 600; color: var(--ink); background: var(--chip, var(--pill)); border-radius: 999px; padding: 5px 10px; transition: filter var(--fast), transform var(--fast); }
a.chip:hover { filter: brightness(1.2); }
a.chip:active { transform: scale(.96); }
.meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); }
.meta-lg { font-size: 14px; }
.dot { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.hug { display: inline-flex; align-items: center; gap: 4px; }
.author { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 500; }
.avatar { width: 26px; height: 26px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font: 500 13px/26px var(--sans); text-align: center; }
.empty { color: var(--muted); padding: 24px 0; }

/* ---------- CTA */
.cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid var(--line); border-radius: 24px; padding: clamp(28px, 5vw, 56px); background: linear-gradient(135deg, rgba(67, 83, 255, .22), rgba(93, 69, 255, .16) 60%, rgba(45, 212, 191, .12)), var(--surface); }
.cta p { margin-top: 8px; color: var(--ink-3); max-width: 56ch; }
@media (max-width: 809px) { .cta { flex-direction: column; align-items: flex-start; } }

/* ---------- bài viết */
.article-head { text-align: center; padding-top: 44px; }
.article-head .chip { display: inline-flex; margin-bottom: 18px; }
.article-head h1 { max-width: 24ch; margin: 0 auto; }
.article-head .meta { justify-content: center; margin-top: 18px; }
.article-cover { margin-top: 32px; }
.article-cover .cover { border-radius: 24px; aspect-ratio: 21 / 9; }
.article-cover .cover-img img[data-lightbox] { cursor: zoom-in; transition: opacity var(--fast) var(--ease); }
.article-cover .cover-img img[data-lightbox]:hover { opacity: .92; }
.article-cover .cover-img img[data-lightbox]:focus-visible { outline: 2px solid var(--accent-2); outline-offset: -3px; }

/* ---------- xem ảnh lớn (lightbox) */
.lightbox { position: fixed; inset: 0; z-index: 90; display: none; align-items: center; justify-content: center; background: rgba(2, 2, 8, .92); padding: clamp(16px, 5vw, 48px); opacity: 0; transition: opacity var(--base) var(--ease); }
.lightbox.show { display: flex; opacity: 1; }
.lightbox-img { max-width: 100%; max-height: 100%; border-radius: 12px; box-shadow: 0 20px 60px rgba(0, 0, 0, .5); object-fit: contain; }
.lightbox-close { position: absolute; top: 16px; right: 16px; width: 42px; height: 42px; border-radius: 10px; border: 0; background: rgba(255, 255, 255, .12); color: #fff; display: grid; place-items: center; cursor: pointer; transition: background-color var(--fast); }
.lightbox-close:hover { background: rgba(255, 255, 255, .22); }
.lightbox-close:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.prose { max-width: 680px; padding-block: 36px 12px; font-size: 17px; line-height: 1.8; color: var(--ink-2); }
.prose p { margin-bottom: 1.25em; }
.prose ul { margin: 0 0 1.25em; padding-left: 1.2em; }
.prose li { margin-bottom: .4em; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose-about { padding-block: 8px 40px; }
.article-foot { max-width: 680px; display: flex; gap: 10px; flex-wrap: wrap; padding-block: 8px 40px; }
.hug-btn[aria-pressed="true"] { background: rgba(93, 69, 255, .24); }
.hug-btn.bump { animation: bump .35s var(--ease); }
@keyframes bump { 40% { transform: scale(1.12); } }
.progress { position: fixed; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); box-shadow: 0 0 14px rgba(103, 115, 255, .6); transform: scaleX(0); transform-origin: left; z-index: 60; }

/* ---------- viết cùng */
.join { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: center; padding-top: 24px; }
.join-text .lead { margin-top: 16px; }
.join-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.join .tiny { margin-top: 14px; }
.join-art .cover { border-radius: 24px; aspect-ratio: 4 / 5; }
@media (max-width: 809px) { .join { grid-template-columns: 1fr; } .join-art .cover { aspect-ratio: 16 / 10; } }

/* ---------- footer */
.site-footer { margin-top: 48px; border-top: 1px solid var(--line); padding: 44px 0 28px; color: var(--ink-3); font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.foot-grid h4 { margin: 0 0 10px; font: 600 12px var(--sans); color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.foot-grid a { display: block; padding: 4px 0; width: fit-content; background: linear-gradient(currentColor, currentColor) no-repeat 0 100% / 0 1px; transition: background-size var(--base) var(--ease); }
.foot-grid a:hover { background-size: 100% 1px; }
.foot-brand p { margin-top: 10px; max-width: 36ch; }
.foot-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
@media (max-width: 809px) { .foot-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- lên đầu trang + toast */
.totop { position: fixed; right: 20px; bottom: 20px; z-index: 40; width: 44px; height: 44px; border-radius: 12px; border: 0; cursor: pointer; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: var(--shadow-md); display: grid; place-items: center; opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity var(--base) var(--ease), transform var(--base) var(--ease), visibility 0s linear var(--base), filter var(--fast); }
.totop.show { opacity: 1; visibility: visible; transform: none; transition: opacity var(--base) var(--ease), transform var(--base) var(--ease), visibility 0s, filter var(--fast); }
.totop:hover { filter: brightness(1.1); transform: translateY(-2px); }
.totop:active { transform: scale(.95); }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(12px); background: var(--surface-2); color: var(--ink); border: 1px solid var(--line); padding: 10px 16px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow-md); opacity: 0; transition: opacity var(--base), transform var(--base); z-index: 70; pointer-events: none; }
.toast.show { opacity: 1; transform: translateX(-50%); }

/* ---------- quản trị */
.admin { padding-top: 40px; min-height: 60vh; }
.admin[data-state="loading"] > * { display: none; }
.admin-login { max-width: 420px; }
.form { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.form label { font-size: 14px; font-weight: 500; }
.form input, .form select, .form textarea { font: 400 16px/1.5 var(--sans); color: var(--ink); border: 1px solid rgba(255, 255, 255, .14); border-radius: 10px; padding: 10px 12px; background: var(--surface); width: 100%; transition: box-shadow var(--fast), border-color var(--fast); }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(93, 69, 255, .28); }
.form textarea { resize: vertical; line-height: 1.7; }
.form-msg { font-size: 14px; color: #ffb0a6; min-height: 20px; }
.form-msg.ok { color: #7ee9c3; }
.setup { margin-top: 24px; padding: 16px; border-radius: 12px; background: rgba(103, 115, 255, .14); border: 1px solid var(--line); }
.setup pre { white-space: pre-wrap; word-break: break-all; font-size: 13px; background: var(--surface-2); color: var(--ink); padding: 10px 12px; border-radius: 8px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.span2 { grid-column: 1 / -1; }
.check { display: flex; align-items: center; gap: 8px; margin-top: 10px; font-weight: 500; }
.check input { width: auto; }
.upload { display: flex; flex-direction: column; gap: 8px; }
.upload-preview:empty { display: none; }
.upload-preview img { border-radius: 10px; max-height: 160px; }
.preview-box { margin-top: 20px; padding: 20px; border: 1px dashed rgba(255, 255, 255, .18); border-radius: 12px; max-width: none; }
.admin-list { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.admin-row { display: grid; grid-template-columns: 1fr auto auto auto; gap: 12px; align-items: center; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 14px; }
.admin-row:last-child { border-bottom: 0; }
.admin-row .t { font-weight: 500; color: var(--ink); }
.admin-row .s { color: var(--muted); font-size: 13px; }
.admin-row .draft { color: #ffcb85; }
.admin-row .btn { padding: 8px 12px; font-size: 13px; }
@media (max-width: 639px) { .form-grid { grid-template-columns: 1fr; } .span2 { grid-column: auto; } .admin-row { grid-template-columns: 1fr auto; } }

/* ---------- tài khoản thành viên */
.nav-user { display: inline-flex; align-items: center; gap: 8px; margin-left: 6px; padding: 4px 8px 4px 4px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--ink); transition: background-color var(--fast); }
.nav-user:hover, .nav-user[aria-current] { background: var(--pill); }
.nav-user img { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; }
.nav-user .avatar { width: 28px; height: 28px; line-height: 28px; }
.auth { display: grid; place-items: center; padding-top: 40px; }
.auth-card { width: min(440px, 100%); background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 28px; box-shadow: var(--shadow-sm); }
.auth-card .lead { font-size: 16px; margin-top: 8px; }
.btn-google { width: 100%; justify-content: center; margin-top: 20px; padding: 13px 16px; background: #fff; color: #3c4043; border: 1px solid rgba(0, 0, 0, .1); }
.btn-google:hover { background: #f4f4f8; }
.btn-google:disabled { color: #9aa0a6; }
.or { display: flex; align-items: center; gap: 12px; margin: 18px 0 6px; color: var(--muted); font-size: 13px; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.tabs { display: flex; gap: 4px; background: var(--pill); border-radius: 10px; padding: 4px; margin-top: 10px; }
.tab { flex: 1; border: 0; background: transparent; border-radius: 8px; padding: 8px; font: 600 14px var(--sans); color: var(--ink-3); cursor: pointer; transition: background-color var(--fast), color var(--fast); }
.tab[aria-selected="true"] { background: var(--surface-2); color: var(--ink); box-shadow: var(--shadow-sm); }
.badge-pending, .badge-ok { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: rgba(255, 196, 102, .20); color: #ffdca6; }
.badge-ok { background: rgba(52, 211, 153, .20); color: #a7f3d0; }
.member { padding-top: 40px; }
.admin-row.is-pending { background: rgba(255, 196, 102, .06); }
.admin-row .by { color: var(--ink); }
.btn-ok { background: rgba(52, 211, 153, .16); color: #a7f3d0; }
.btn-ok:hover { background: rgba(52, 211, 153, .26); }
@media (max-width: 809px) {
  .nav-user { margin: 8px 0 0; }
}
@media (max-width: 639px) {
  .member .section-head, .admin .section-head { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .card:hover, .btn:hover, .totop:hover { transform: none; }
}