/*
  Daily Cast — visual system  ·  direction: "On-air daybreak"

  Daily Cast is a personal radio station that broadcasts your reading back to
  you at first light. Two ideas carry the identity:

    1. The on-air tally — the equalizer/signal bars are the station's live
       indicator. They mark the wordmark, the sign-in card, and each recorded
       episode. Amber is the tally glow; it is the one loud colour and is
       spent only on live/interactive things.
    2. First light — a single hairline amber horizon sits under the wordmark
       and along the top of each surface, the daybreak the product is named
       for. No gradient heroes; the warmth is one line, not a wash.

  Type: Fraunces (soft old-style serif) for the voice of the station — the
  wordmark and headings — set against IBM Plex Sans for the interface and IBM
  Plex Mono for broadcast metadata (run times, dates). All self-hosted WOFF2,
  latin subset, OFL. No third-party origins at runtime.

  Palette anchors on a deep pre-dawn indigo (--night), not black, so dark mode
  reads as "before sunrise" rather than the usual near-black canvas.
*/

/* ---------- Self-hosted type (OFL, latin subset) ---------- */

@font-face {
  font-family: "Fraunces";
  src: url("/static/fonts/fraunces-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("/static/fonts/fraunces-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plex Sans";
  src: url("/static/fonts/plexsans-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plex Sans";
  src: url("/static/fonts/plexsans-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("/static/fonts/plexmono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */

:root {
  --night: #16223c;
  --paper: #e7e9ed;
  --surface: #fbfaf8;
  --muted: #566074;
  --line: #d3d7de;
  --line-strong: #c2c7d1;
  --signal: #d9670f;       /* tally glow — decoration/bars */
  --signal-deep: #c1531a;  /* amber that carries white text (AA) */
  --signal-ink: #ffffff;
  --tide: #245d58;         /* calm interactive teal */
  --danger: #ab3324;
  --danger-bg: #f8e7e3;

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --ui: "Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: "Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 6px;
  --radius-lg: 12px;
  --shadow: 0 1px 1px rgba(22, 34, 60, 0.04), 0 10px 30px -18px rgba(22, 34, 60, 0.35);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --night: #e9ebf0;
    --paper: #12151c;
    --surface: #1a1f29;
    --muted: #99a2b3;
    --line: #2a303c;
    --line-strong: #3a4150;
    --signal: #f0803e;
    --signal-deep: #f0803e;
    --signal-ink: #1a1204;
    --tide: #63b4ad;
    --danger: #f0968a;
    --danger-bg: #351d1b;
    --shadow: 0 1px 1px rgba(0, 0, 0, 0.4), 0 14px 34px -18px rgba(0, 0, 0, 0.7);
  }
}

:root[data-theme="dark"] {
  --night: #e9ebf0;
  --paper: #12151c;
  --surface: #1a1f29;
  --muted: #99a2b3;
  --line: #2a303c;
  --line-strong: #3a4150;
  --signal: #f0803e;
  --signal-deep: #f0803e;
  --signal-ink: #1a1204;
  --tide: #63b4ad;
  --danger: #f0968a;
  --danger-bg: #351d1b;
  --shadow: 0 1px 1px rgba(0, 0, 0, 0.4), 0 14px 34px -18px rgba(0, 0, 0, 0.7);
}

:root[data-theme="light"] {
  --night: #16223c;
  --paper: #e7e9ed;
  --surface: #fbfaf8;
  --muted: #566074;
  --line: #d3d7de;
  --line-strong: #c2c7d1;
  --signal: #d9670f;
  --signal-deep: #c1531a;
  --signal-ink: #ffffff;
  --tide: #245d58;
  --danger: #ab3324;
  --danger-bg: #f8e7e3;
  --shadow: 0 1px 1px rgba(22, 34, 60, 0.04), 0 10px 30px -18px rgba(22, 34, 60, 0.35);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--night);
  font-family: var(--ui);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

a { color: var(--tide); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

/* ---------- Signature: on-air tally bars ---------- */

.signal-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
  height: 1em;
  vertical-align: middle;
}

.signal-bars span {
  display: block;
  width: 3px;
  background: var(--signal);
  border-radius: 1px;
}

/* default staggered heights (flex-end won't stretch zero-height children) */
.signal-bars span:nth-child(1) { height: 45%; }
.signal-bars span:nth-child(2) { height: 100%; }
.signal-bars span:nth-child(3) { height: 65%; }
.signal-bars span:nth-child(4) { height: 80%; }

.signal-bars.wordmark-mark span:nth-child(1) { height: 40%; }
.signal-bars.wordmark-mark span:nth-child(2) { height: 100%; }
.signal-bars.wordmark-mark span:nth-child(3) { height: 62%; }
.signal-bars.wordmark-mark span:nth-child(4) { height: 84%; }

.signal-bars.pulse span {
  animation: on-air 1.05s ease-in-out infinite;
  transform-origin: bottom;
}
.signal-bars.pulse span:nth-child(1) { animation-delay: 0s; }
.signal-bars.pulse span:nth-child(2) { animation-delay: 0.14s; }
.signal-bars.pulse span:nth-child(3) { animation-delay: 0.28s; }
.signal-bars.pulse span:nth-child(4) { animation-delay: 0.42s; }

@keyframes on-air {
  0%, 100% { transform: scaleY(0.35); }
  50% { transform: scaleY(1); }
}

@media (prefers-reduced-motion: reduce) {
  .signal-bars.pulse span { animation: none; }
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 880px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--night);
  white-space: nowrap;
}

.wordmark .signal-bars { height: 1.1rem; }

.topbar nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.9rem;
  white-space: nowrap;
}

@media (max-width: 460px) {
  .topbar { padding: 1rem 1.25rem; }
  .wordmark { font-size: 1.15rem; }
  .topbar nav { gap: 0.95rem; font-size: 0.85rem; }
}

.topbar nav a,
.topbar nav button.link {
  color: var(--muted);
  text-decoration: none;
  background: none;
  border: none;
  font: inherit;
  cursor: pointer;
  padding: 0;
}

.topbar nav a:hover,
.topbar nav button.link:hover { color: var(--night); }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 2.25rem 1.5rem 5rem;
}

/* ---------- Surfaces ---------- */

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 1.6rem;
  overflow: hidden;
}

/* first-light hairline along the top of every surface */
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--signal) 0 34%, transparent 34%);
}

.card + .card { margin-top: 1.5rem; }

.card h2 {
  margin: 0 0 0.2rem;
  font-size: 1.35rem;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 1.25rem;
}

.grid-two {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 820px) {
  .grid-two {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

/* ---------- Forms ---------- */

label {
  display: block;
  font-family: var(--ui);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

input[type="email"],
input[type="url"],
input[type="number"] {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--night);
  font: inherit;
  font-size: 0.98rem;
}

input::placeholder { color: var(--muted); opacity: 0.7; }

input:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--signal-deep);
  outline-offset: 2px;
}

input:focus-visible {
  border-color: var(--signal-deep);
  outline-offset: 1px;
}

.field-row {
  display: flex;
  gap: 0.6rem;
  align-items: flex-end;
}

.field-row > div { flex: 1; }

.error-text {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0.5rem 0 0;
}

.error-banner {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent);
  border-radius: var(--radius);
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* ---------- Buttons ---------- */

button,
.btn {
  font-family: var(--ui);
  background: var(--night);
  color: var(--paper);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.7rem 1.2rem;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.06s ease, opacity 0.15s ease;
}

.btn { display: inline-block; text-decoration: none; }

button:hover, .btn:hover { opacity: 0.9; }
button:active { transform: translateY(1px); }

button.accent {
  background: var(--signal-deep);
  color: var(--signal-ink);
}

button.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line-strong);
}
button.ghost:hover { color: var(--night); opacity: 1; }

button:disabled { opacity: 0.55; cursor: default; transform: none; }

/* ---------- Sign in / error card ---------- */

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  text-align: center;
  padding: 2.4rem 2rem;
}

.login-card .signal-bars {
  height: 2.1rem;
  margin-bottom: 1.4rem;
}
.login-card .signal-bars span { width: 6px; }

.login-card h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.login-card p.tagline {
  color: var(--muted);
  font-family: var(--display);
  font-size: 1.05rem;
  margin: 0 0 1.9rem;
}

.login-card form { text-align: left; }

.login-card button[type="submit"] {
  width: 100%;
  margin-top: 1rem;
}

.login-card .btn { width: 100%; margin-top: 0.5rem; }

.check-inbox { display: none; text-align: left; }
.check-inbox p { margin: 0 0 0.6rem; }
.check-inbox strong { font-family: var(--display); font-size: 1.1rem; }
.check-inbox .hint { margin-bottom: 1.2rem; }
.check-inbox button { width: 100%; }

/* ---------- Sources ---------- */

.source-list,
.digest-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.source-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}
.source-row:last-child { border-bottom: none; }

.source-row .name {
  font-weight: 600;
  font-size: 0.98rem;
}

.source-row .url {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  word-break: break-all;
}

.source-row button.remove {
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  border-radius: var(--radius);
  padding: 0.35rem 0.6rem;
  font-size: 0.82rem;
  font-weight: 500;
  flex-shrink: 0;
}
.source-row button.remove:hover {
  color: var(--danger);
  border-color: var(--danger);
  opacity: 1;
}

/* ---------- Episodes: the broadcast log ---------- */

.digest-row {
  padding: 1.1rem;
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}
.digest-row:first-child { margin-top: 0; }

/* the latest transmission is on air */
.digest-row:first-child {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  background: var(--surface);
}

.digest-row .meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.65rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.01em;
  color: var(--muted);
}

.digest-row .meta .date { color: var(--night); font-weight: 400; }

.digest-row .meta .duration {
  margin-left: auto;
  color: var(--night);
}

.digest-row .summary {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  color: var(--night);
}

/* native audio sits in a console frame — the hero interaction */
.digest-row audio {
  width: 100%;
  height: 40px;
  border-radius: var(--radius);
}
.digest-row audio::-webkit-media-controls-panel {
  background: var(--paper);
}

.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- Settings ---------- */

.settings-form .field { margin-bottom: 1.6rem; }

.settings-form input[type="range"] {
  width: 100%;
  accent-color: var(--signal-deep);
}

.settings-form .range-value {
  font-family: var(--mono);
  font-size: 1.15rem;
  margin-top: 0.5rem;
  color: var(--night);
}
.settings-form .range-value .unit { color: var(--muted); font-size: 0.85rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--night);
}
.chip::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tide);
}

.status-text {
  font-size: 0.88rem;
  margin-top: 0.9rem;
  min-height: 1.2em;
}
.status-text.success { color: var(--tide); font-weight: 600; }
.status-text.error { color: var(--danger); }