/* ============================================================================
   Horizon Engine — Preview page
   Layered on top of the shared base stylesheet (../style.css). The preview
   borrows the engine page's building blocks (he-hero, platform-card, devlog-*)
   so it reads as part of the same site; only what's specific to the gated
   preview lives here.
   ============================================================================ */

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.he-hero.preview-hero {
  min-height: 58vh;
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(200, 134, 26, 0.14), transparent 60%),
    linear-gradient(180deg, #0c0c0c 0%, var(--bg) 100%);
}

.preview-hero .he-hero-content {
  max-width: 760px;
}

.preview-hero .he-hero-sub {
  max-width: 540px;
}

/* Lock state, shown right under the hero copy — the one place on the page that
   always says whether you're in or out. */
.preview-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 2rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.preview-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
}

.preview-badge[data-state="unlocked"] {
  border-color: rgba(125, 207, 182, 0.35);
  color: #7dcfb6;
}

.preview-badge[data-state="unlocked"] .preview-badge-dot {
  background: #7dcfb6;
  box-shadow: 0 0 0 3px rgba(125, 207, 182, 0.15);
}

.preview-badge-lock {
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  margin-left: 0.15rem;
  padding: 0 0 0 0.75rem;
  font: inherit;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s;
}

.preview-badge-lock:hover {
  color: var(--cream);
}

.preview-container {
  padding-top: 5rem;
}

/* ── What the program is ───────────────────────────────────────────────────── */
.preview-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.preview-fact {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: border-color 0.25s, transform 0.25s;
}

.preview-fact:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.preview-fact-icon {
  font-size: 1.4rem;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.9rem;
}

.preview-fact h3 {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--cream);
  margin-bottom: 0.6rem;
}

.preview-fact p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ── Gate ──────────────────────────────────────────────────────────────────── */
/* In the page flow rather than a modal: the visitor gets to read what the
   preview even is before being asked for a secret. */
.preview-gate {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-card);
}

.preview-gate-main {
  padding: 2.5rem 2.25rem;
  background:
    radial-gradient(110% 130% at 0% 0%, rgba(200, 134, 26, 0.07), transparent 62%),
    var(--bg-surface);
}

.preview-gate-icon {
  color: var(--gold);
  line-height: 0;
  margin-bottom: 1.1rem;
}

.preview-gate-main h3 {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--cream);
  margin-bottom: 0.6rem;
}

.preview-gate-main > p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 42ch;
}

.preview-gate-aside {
  padding: 2.5rem 2.25rem;
  border-left: 1px solid var(--border);
  /* Centred so the column doesn't leave a tall empty gap next to the unlock
     form while the request form is still collapsed. */
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.preview-gate-aside h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.preview-gate-aside p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.preview-gate-form {
  margin-top: 1.5rem;
  text-align: left;
}

.preview-gate-form .form-group {
  margin-bottom: 1rem;
}

.preview-gate-form button {
  width: 100%;
}

.preview-gate-error {
  color: #e05c5c;
  font-size: 0.85rem;
  margin: -0.35rem 0 1rem;
}

.preview-gate-success {
  color: #7dcfb6;
  font-size: 0.85rem;
  margin: -0.35rem 0 1rem;
}

.preview-gate-aside .secondary {
  width: 100%;
  text-align: center;
}

.preview-request-form {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

/* ── Build cards ───────────────────────────────────────────────────────────── */
.preview-warning {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  max-width: 700px;
  margin: 0 auto 2rem;
  padding: 1rem 1.25rem;
  border: 1px solid rgba(254, 188, 46, 0.28);
  border-left-width: 3px;
  border-radius: 10px;
  background: rgba(254, 188, 46, 0.05);
}

.preview-warning-icon {
  color: #febc2e;
  font-size: 0.9rem;
  line-height: 1.7;
}

.preview-warning p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
}

.preview-warning strong {
  color: var(--cream);
  font-weight: 600;
}

.preview-section-note {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: -0.75rem auto 2rem;
  line-height: 1.7;
}

/* One card per platform; a platform can carry more than one build, so each
   build is its own block inside the card. */
.platform-builds {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 0.35rem;
}

.platform-build {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 0.5rem;
}

.platform-build + .platform-build {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.preview-build-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: center;
}

.preview-chip {
  font-size: 0.66rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.45rem;
  white-space: nowrap;
}

.preview-chip--channel {
  color: #febc2e;
  background: rgba(254, 188, 46, 0.08);
  border-color: rgba(254, 188, 46, 0.28);
}

.preview-chip--commit {
  font-family: "SFMono-Regular", "JetBrains Mono", Consolas, monospace;
  text-transform: none;
  letter-spacing: 0.02em;
}

.preview-build-file {
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.65;
  word-break: break-all;
  text-align: center;
  line-height: 1.5;
}

.preview-build-size {
  font-size: 0.76rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.platform-card .platform-btn {
  margin-top: 0.35rem;
}

/* ── Devlogs ───────────────────────────────────────────────────────────────── */
.devlog-empty {
  padding: 2rem;
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .preview-facts {
    grid-template-columns: 1fr;
  }

  .preview-gate {
    grid-template-columns: 1fr;
  }

  .preview-gate-aside {
    border-left: none;
    border-top: 1px solid var(--border);
  }
}

@media (max-width: 640px) {
  .preview-container {
    padding-top: 3rem;
  }

  .preview-gate-main,
  .preview-gate-aside {
    padding: 1.75rem 1.35rem;
  }
}