/* SortTube website. Dark by default (like YouTube at night); light when
   the system asks for it. Screenshots: promo/shots/ (see tools/make_site.py). */

:root {
  --bg: #0f0f0f;
  --bg-soft: #181818;
  --panel: #212121;
  --panel-2: #2a2a2a;
  --fg: #f1f1f1;
  --muted: #aaaaaa;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #3ea6ff;
  --accent-fg: #0f0f0f;
  --red: #ff3d3d;
  --brand-1: #e5484d;
  --brand-2: #ffc53d;
  --brand-3: #46a758;
  --radius: 16px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-soft: #f6f6f6;
    --panel: #ffffff;
    --panel-2: #f2f2f2;
    --fg: #0f0f0f;
    --muted: #606060;
    --line: rgba(0, 0, 0, 0.1);
    --accent: #065fd4;
    --accent-fg: #ffffff;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    color-scheme: light;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 "Roboto", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
}

img {
  max-width: 100%;
}

.wrap {
  width: min(1120px, 100% - 32px);
  margin: 0 auto;
}

/* ---------------------------------------------------------------- header */

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
}

.top {
  transition: box-shadow 0.25s;
}

.top.scrolled {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}

.top .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  border-radius: 22%;
}

.top nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
}

.top nav a {
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
}

.top nav a:hover {
  color: var(--fg);
}

.langs {
  display: flex;
  gap: 6px;
}

.langs a {
  display: block;
  padding: 3px;
  border-radius: 7px;
  opacity: 0.5;
  transition: opacity 0.15s;
}

.langs a:hover,
.langs a:focus-visible {
  opacity: 1;
}

.langs a[aria-current] {
  opacity: 1;
  box-shadow: 0 0 0 2px var(--accent);
}

.langs svg {
  display: block;
  width: 27px;
  height: 18px;
  border-radius: 4px;
  box-shadow: 0 0 0 1px var(--line);
}

/* --------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 24px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.12s, filter 0.12s;
}

.btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-fg);
}

.btn.ghost {
  border: 1px solid var(--line);
  color: var(--fg);
}

.btn.soon {
  background: var(--panel-2);
  color: var(--muted);
  cursor: default;
  transform: none;
  filter: none;
}

/* ------------------------------------------------------------------ hero */

.hero {
  padding: 72px 0 40px;
  text-align: center;
}

.hero h1 {
  max-width: 820px;
  margin: 0 auto 16px;
  font-size: clamp(34px, 5.5vw, 58px);
  line-height: 1.08;
  letter-spacing: -1px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--brand-1), var(--brand-2) 55%, var(--brand-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lead {
  max-width: 640px;
  margin: 0 auto 28px;
  color: var(--muted);
  font-size: 19px;
}

.hero .actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.hero .small {
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}

/* ----------------------------------------------------------- screenshots */

.shot {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0f0f0f;
  box-shadow: var(--shadow);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot-hero {
  margin: 48px auto 0;
}

.shot-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: #1b1b1b;
}

.shot-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #3a3a3a;
}

.shot-bar span {
  flex: 1;
  max-width: 420px;
  margin-left: 12px;
  padding: 4px 12px;
  border-radius: 12px;
  background: #2a2a2a;
  color: #9a9a9a;
  font-size: 12px;
  text-align: left;
}

/* Popups and menus: at most their real size (set by the width attribute). */
.shot-small {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
}

.shot-small img {
  width: auto;
  max-width: 100%;
}

/* --------------------------------------------------------------- sections */

section {
  padding: 88px 0;
  scroll-margin-top: 64px; /* the sticky header */
}

section.soft {
  background: var(--bg-soft);
}

.kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.5px;
}

.section-lead {
  max-width: 660px;
  margin: 0 0 40px;
  color: var(--muted);
  font-size: 18px;
}

.center {
  text-align: center;
}

.center .section-lead {
  margin-right: auto;
  margin-left: auto;
}

/* features grid */

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.feature .ico {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  border-radius: 12px;
  background: var(--panel-2);
  font-size: 22px;
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.tag-pro {
  margin-left: 6px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  vertical-align: 2px;
}

/* showcase rows: text + screenshot */

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 56px;
  align-items: center;
}

.row.stack {
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.row.stack > :first-child {
  max-width: 720px;
}

.row + .row {
  margin-top: 96px;
}

.row.flip > :first-child {
  order: 2;
}

.row ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.row li {
  position: relative;
  margin-bottom: 10px;
  padding-left: 28px;
  color: var(--muted);
}

.row li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand-3);
  font-weight: 700;
}

.row li strong {
  color: var(--fg);
}

/* ---------------------------------------------------------- privacy band */

.privacy-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.privacy-band div {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
}

.privacy-band b {
  display: block;
  margin-bottom: 4px;
  font-size: 17px;
}

.privacy-band span {
  color: var(--muted);
  font-size: 15px;
}

/* ---------------------------------------------------------------- pricing */

.plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.plans-after {
  max-width: 620px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 14px;
}

.plan {
  display: flex;
  flex-direction: column;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  text-align: left;
}

.plan.pro {
  position: relative;
  overflow: hidden;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow);
}

/* Diagonal ribbon across the top right corner. */
.plan .ribbon {
  position: absolute;
  top: 26px;
  right: -46px;
  width: 180px;
  padding: 6px 0;
  background: var(--accent);
  color: var(--accent-fg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-align: center;
  text-transform: uppercase;
  transform: rotate(45deg);
}

.plan.pro h3 {
  padding-right: 64px;
}

/* The yearly plan stands out: a bit bigger than the others (side by side). */
.plan.pro {
  z-index: 1;
  scale: 1.06;
}

.plan h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin: 0;
  font-size: 22px;
}

.plan .badge {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.plan .price {
  margin: 12px 0 2px;
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -1px;
}

.plan .price small {
  color: var(--muted);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0;
}

.plan .note {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14px;
}

.plan ul {
  flex: 1;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.plan li {
  position: relative;
  margin-bottom: 9px;
  padding-left: 26px;
  font-size: 15px;
}

.plan li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand-3);
  font-weight: 700;
}

.plan .btn {
  justify-content: center;
}

/* -------------------------------------------------------------------- FAQ */

.faq {
  max-width: 780px;
  margin: 0 auto;
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  position: relative;
  padding: 20px 36px 20px 0;
  font-size: 17px;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 4px;
  color: var(--muted);
  font-size: 24px;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  margin: -6px 0 20px;
  color: var(--muted);
}

/* --------------------------------------------------------------- final CTA */

.final {
  padding: 96px 0;
  text-align: center;
}

.final h2 {
  margin-bottom: 24px;
}

/* ----------------------------------------------------------------- footer */

footer {
  padding: 36px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
}

footer a {
  color: var(--muted);
}

footer .fine {
  flex-basis: 100%;
  font-size: 13px;
}

/* -------------------------------------------------------- hover on cards */

.feature,
.privacy-band div,
.plan,
.shot {
  transition: scale 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

@media (hover: hover) {
  .feature:hover,
  .privacy-band div:hover,
  .plan:hover {
    scale: 1.03;
    border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
    box-shadow: var(--shadow);
  }

  /* Screenshots: a slight zoom (less for the big ones). */
  .shot:hover {
    scale: 1.02;
    box-shadow: 0 28px 80px rgba(0, 0, 0, 0.5);
  }

  .shot-small:hover {
    scale: 1.04;
  }

  .plan.pro:hover {
    scale: 1.08;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), var(--shadow);
  }
}

/* ------------------------------------------------------- appear on scroll */
/* Only with scripts (the "js" class, set in <head>): the script below the
   page marks each block "in" when it comes into view; --d staggers
   siblings. "translate" and "scale" are separate properties, so the hover
   above keeps working. */

.js :is(.hero h1, .hero .lead, .hero .actions, .hero .small, .shot-hero, section .center > *,
  .feature, .row > *, .privacy-band > div, .plan, .plans-after, .faq details, .final .wrap > *) {
  transition: opacity 0.7s ease var(--d, 0s), translate 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) var(--d, 0s),
    scale 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.js :is(.hero h1, .hero .lead, .hero .actions, .hero .small, .shot-hero, section .center > *,
  .feature, .row > *, .privacy-band > div, .plan, .plans-after, .faq details, .final .wrap > *):not(.in) {
  opacity: 0;
  translate: 0 28px;
}

@media (prefers-reduced-motion: reduce) {
  .js :is(.hero h1, .hero .lead, .hero .actions, .hero .small, .shot-hero, section .center > *,
    .feature, .row > *, .privacy-band > div, .plan, .plans-after, .faq details, .final .wrap > *):not(.in) {
    opacity: 1;
    translate: none;
  }

  * {
    transition: none !important;
  }
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 920px) {
  .features,
  .privacy-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .row,
  .row.flip {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .row.flip > :first-child {
    order: 0;
  }

  .plans {
    grid-template-columns: minmax(0, 1fr);
    max-width: 480px;
  }

  .plan.pro,
  .plan.pro:hover {
    scale: 1;
  }
}

@media (max-width: 640px) {
  .top nav a.hide-sm {
    display: none;
  }

  .hero {
    padding-top: 48px;
  }

  .features,
  .privacy-band {
    grid-template-columns: minmax(0, 1fr);
  }


  section {
    padding: 64px 0;
  }
}