/* ==========================================================================
   Design system for /games/.

   Same idea as the /pdf-tools/ suite: everything is namespaced .gm- so it
   cannot leak into the stylesheet the rest of the site shares, and a page
   picks its palette by putting one theme class on .gm-shell. The next game
   added to this folder only has to define four colours.
   ========================================================================== */

.gm-theme-connect {
  --gm-a: #2563eb; --gm-a-deep: #1d4ed8; --gm-a-soft: rgba(37, 99, 235, 0.12);
  --gm-b: #f59e0b; --gm-b-deep: #b45309; --gm-b-soft: rgba(245, 158, 11, 0.14);
  --gm-tint-1: #eff6ff; --gm-tint-2: #fffbeb; --gm-tint-3: #f5f3ff;
}
/* Disc and board colours are not here: they belong to the game, not the page
   theme, and the visitor picks them — see the [data-discs] palettes in
   connect-four.css. */

/* ------------------------------------------------------------- shell ---- */
.gm-shell {
  position: relative;
  padding: 1.5rem 0 3rem;
  overflow-x: clip;
  background:
    radial-gradient(circle, rgba(100, 116, 139, 0.2) 1.1px, transparent 1.2px),
    radial-gradient(ellipse 85% 55% at 6% -8%, var(--gm-a-soft), transparent 55%),
    radial-gradient(circle at 94% 4%, var(--gm-b-soft), transparent 42%),
    linear-gradient(168deg, var(--gm-tint-1) 0%, #fff 42%, var(--gm-tint-2) 76%, var(--gm-tint-3) 100%);
  background-size: 22px 22px, auto, auto, auto;
  background-repeat: repeat, no-repeat, no-repeat, no-repeat;
}
[data-theme="dark"] .gm-shell {
  background:
    radial-gradient(circle, rgba(148, 163, 184, 0.17) 1.1px, transparent 1.2px),
    radial-gradient(circle at 8% 4%, var(--gm-a-soft), transparent 34%),
    radial-gradient(circle at 92% 10%, var(--gm-b-soft), transparent 30%),
    linear-gradient(152deg, #0f172a 0%, #111827 55%, #0b1220 100%);
  background-size: 22px 22px, auto, auto, auto;
  background-repeat: repeat, no-repeat, no-repeat, no-repeat;
}

.gm-card {
  position: relative;
  border-radius: 26px;
  padding: clamp(1.1rem, 2.5vw, 1.8rem);
  border: 1px solid var(--gm-a-soft);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.74));
  box-shadow: 0 24px 68px rgba(30, 41, 59, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}
[data-theme="dark"] .gm-card {
  background: rgba(15, 23, 42, 0.82);
  border-color: rgba(148, 163, 184, 0.18);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

.gm-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.34rem 0.8rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em;
  color: #fff; background: linear-gradient(135deg, var(--gm-a-deep), var(--gm-b-deep));
  box-shadow: 0 8px 22px -8px var(--gm-a);
}
.gm-eyebrow {
  display: block; margin: 0 0 0.3rem;
  font-size: 0.74rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--gm-a-deep);
}
[data-theme="dark"] .gm-eyebrow { color: var(--gm-a); }

/* The illustration column is deliberately the narrow one — the mock is
   capped at 340px. Never set this inline: the single-column rule below is
   a media query, and an inline style would outrank it on a phone. */
.gm-hero { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: clamp(1rem, 3vw, 2rem); align-items: center; }
.gm-hero-copy { min-width: 0; }
.gm-hero h1 {
  margin: 0.7rem 0 0.6rem;
  font-size: clamp(1.8rem, 4.2vw, 2.7rem); font-weight: 900; line-height: 1.1; letter-spacing: -0.022em;
  background: linear-gradient(135deg, #0f172a 0%, var(--gm-a-deep) 52%, var(--gm-b-deep) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
[data-theme="dark"] .gm-hero h1 {
  background: linear-gradient(135deg, #f8fafc, var(--gm-a) 55%, var(--gm-b) 100%);
  -webkit-background-clip: text; background-clip: text;
}
.gm-lead { margin: 0 0 1rem; color: var(--text-muted); line-height: 1.68; font-size: clamp(0.95rem, 1.9vw, 1.04rem); max-width: 58ch; }

.gm-chips { display: flex; flex-wrap: wrap; gap: 0.42rem; margin: 0 0 1.1rem; }
.gm-chips span {
  padding: 0.34rem 0.72rem; border-radius: 999px;
  border: 1px solid var(--gm-a-soft); background: rgba(255, 255, 255, 0.75);
  font-size: 0.79rem; font-weight: 700; color: var(--text);
  box-shadow: 0 3px 10px rgba(15, 23, 42, 0.05);
}
[data-theme="dark"] .gm-chips span { background: rgba(30, 41, 59, 0.7); border-color: rgba(148, 163, 184, 0.2); }
.gm-chips span.is-lead { border-color: var(--gm-a); color: var(--gm-a-deep); background: var(--gm-a-soft); }
[data-theme="dark"] .gm-chips span.is-lead { color: var(--gm-a); }

.gm-actions { display: flex; flex-wrap: wrap; gap: 0.65rem; }
.gm-btn-primary {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.78rem 1.35rem; border-radius: 14px; border: 0;
  font: inherit; font-size: 0.97rem; font-weight: 800; color: #fff; text-decoration: none; cursor: pointer;
  background: linear-gradient(135deg, var(--gm-a), var(--gm-b-deep));
  box-shadow: 0 14px 32px -14px var(--gm-a-deep);
  transition: transform 0.16s ease, box-shadow 0.16s ease, filter 0.16s ease;
}
.gm-btn-primary:hover { transform: translateY(-2px); filter: saturate(1.08); color: #fff; }
.gm-btn {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.55rem 0.9rem; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface-strong); color: var(--text);
  font: inherit; font-size: 0.88rem; font-weight: 700; text-decoration: none; cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease, color 0.15s ease;
}
.gm-btn:hover:not(:disabled) { border-color: var(--gm-a); background: var(--gm-a-soft); color: var(--gm-a-deep); transform: translateY(-1px); }
[data-theme="dark"] .gm-btn:hover:not(:disabled) { color: var(--text); }
.gm-btn:disabled { opacity: 0.42; cursor: not-allowed; }
.gm-btn.is-active { border-color: var(--gm-a); background: var(--gm-a-soft); color: var(--gm-a-deep); }

/* ---------------------------------------------------------- game shell -- */
.gm-play { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 1.2rem; align-items: start; }
.gm-side { display: grid; gap: 0.9rem; }
.gm-panel {
  border-radius: 18px; padding: 1rem;
  border: 1px solid var(--gm-a-soft);
  background: linear-gradient(160deg, var(--gm-tint-1), rgba(255, 255, 255, 0.86));
}
[data-theme="dark"] .gm-panel { background: rgba(15, 23, 42, 0.72); border-color: rgba(148, 163, 184, 0.18); }
.gm-panel h3 {
  margin: 0 0 0.7rem; font-size: 0.95rem; font-weight: 800;
  display: flex; align-items: center; gap: 0.4rem;
}
.gm-panel h3::before { content: ''; width: 4px; height: 14px; border-radius: 999px; background: linear-gradient(180deg, var(--gm-a), var(--gm-b)); }
.gm-field { display: block; margin-bottom: 0.75rem; }
.gm-field > span {
  display: block; font-size: 0.72rem; font-weight: 800; color: var(--text-muted);
  margin-bottom: 0.3rem; text-transform: uppercase; letter-spacing: 0.06em;
}
.gm-field select, .gm-field input[type="text"] {
  width: 100%; padding: 0.5rem 0.65rem; border-radius: 11px;
  border: 1px solid var(--border); background: var(--surface-strong); color: var(--text);
  font: inherit; font-size: 0.9rem;
}
.gm-field select:focus { outline: 2px solid var(--gm-a); outline-offset: 1px; }
.gm-seg { display: flex; gap: 0.3rem; padding: 0.22rem; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-strong); }
.gm-seg button {
  flex: 1; padding: 0.45rem 0.3rem; border: 0; border-radius: 9px; background: transparent;
  color: var(--text-muted); font: inherit; font-size: 0.84rem; font-weight: 700; cursor: pointer;
}
.gm-seg button.is-active { background: var(--gm-a); color: #fff; }

@media (max-width: 900px) {
  /* Both of these collapse at the same width the hero illustration is hidden
     at. Hiding the mock alone leaves its track behind, and the copy then runs
     at 60% width with dead space beside it. */
  .gm-hero { grid-template-columns: 1fr; }
  .gm-play { grid-template-columns: 1fr; }
}

/* --------------------------------------------------- content sections --- */
.gm-shell .section { padding: clamp(1.9rem, 4vw, 3rem) 0; }
.gm-section-title { font-size: clamp(1.4rem, 2.8vw, 2.05rem); font-weight: 900; letter-spacing: -0.02em; margin: 0 0 0.35rem; }
.gm-section-sub { color: var(--text-muted); margin-top: 0; }
.gm-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); gap: 0.9rem; margin-top: 1.1rem; }
.gm-step {
  border-radius: 18px; padding: 1.1rem 1rem 1rem;
  border: 1px solid var(--gm-a-soft); background: linear-gradient(165deg, rgba(255, 255, 255, 0.92), var(--gm-tint-1));
  box-shadow: 0 14px 34px -26px var(--gm-a-deep);
}
[data-theme="dark"] .gm-step { background: rgba(15, 23, 42, 0.66); border-color: rgba(148, 163, 184, 0.16); }
.gm-step .n {
  display: grid; place-items: center; width: 30px; height: 30px; border-radius: 10px;
  font-weight: 900; font-size: 0.92rem; color: #fff; margin-bottom: 0.65rem;
  background: linear-gradient(135deg, var(--gm-a), var(--gm-b-deep));
}
.gm-step b { display: block; margin-bottom: 0.28rem; }
.gm-step span { color: var(--text-muted); font-size: 0.91rem; line-height: 1.6; }

.gm-prose {
  max-width: 62rem; margin-inline: auto;
  border-radius: 24px; padding: clamp(1.2rem, 3vw, 2.1rem);
  border: 1px solid var(--gm-a-soft);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.92), var(--gm-tint-1));
  box-shadow: 0 20px 54px -34px var(--gm-a-deep);
}
[data-theme="dark"] .gm-prose { background: rgba(15, 23, 42, 0.62); border-color: rgba(148, 163, 184, 0.16); }
.gm-prose h2 {
  position: relative; margin: 1.8rem 0 0.5rem; padding-left: 0.95rem;
  font-size: 1.24rem; font-weight: 800; letter-spacing: -0.01em;
}
.gm-prose h2::before {
  content: ''; position: absolute; left: 0; top: 0.28em; width: 4px; height: 1.05em;
  border-radius: 999px; background: linear-gradient(180deg, var(--gm-a), var(--gm-b));
}
.gm-prose > .gm-eyebrow + h2 { margin-top: 0.2rem; }
.gm-prose p { color: var(--text-muted); line-height: 1.78; }
.gm-prose a { color: var(--gm-a-deep); font-weight: 700; }
[data-theme="dark"] .gm-prose a { color: var(--gm-a); }

.gm-related { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.8rem; margin-top: 1.1rem; }
.gm-related a {
  display: flex; gap: 0.7rem; align-items: center; padding: 0.85rem 1rem; border-radius: 16px;
  border: 1px solid var(--border); background: var(--surface); color: inherit; text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.gm-related a:hover { transform: translateY(-3px); border-color: var(--gm-a); }
.gm-related .ic {
  flex: 0 0 auto; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; font-size: 1.15rem;
  background: linear-gradient(135deg, var(--gm-a-soft), var(--gm-b-soft)); border: 1px solid var(--gm-a-soft);
}
.gm-related small { color: var(--text-muted); }

.gm-final {
  text-align: center; margin: clamp(2.2rem, 5vw, 3.2rem) 0 0.5rem;
  padding: clamp(1.6rem, 4vw, 2.6rem) 1.2rem; border-radius: 26px;
  border: 1px solid var(--gm-a-soft);
  background:
    radial-gradient(circle at 20% 0%, var(--gm-a-soft), transparent 60%),
    radial-gradient(circle at 85% 100%, var(--gm-b-soft), transparent 55%),
    linear-gradient(160deg, var(--gm-tint-1), var(--gm-tint-2));
}
[data-theme="dark"] .gm-final { background: linear-gradient(160deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.8)); border-color: rgba(148, 163, 184, 0.18); }
.gm-final h2 { margin-top: 0; font-size: clamp(1.35rem, 3vw, 1.9rem); font-weight: 900; }

/* ------------------------------------------------------- phone hero ----- */
/* At 430px the badge wrapped onto two lines, the chips stacked one per row
   and the two buttons sat at half width each. */
@media (max-width: 560px) {
  .gm-card { padding: clamp(0.9rem, 3.6vw, 1.4rem); border-radius: 20px; }
  .gm-badge { font-size: 0.63rem; padding: 0.3rem 0.62rem; letter-spacing: 0.03em; white-space: nowrap; }
  .gm-hero h1 { margin-top: 0.55rem; }
  .gm-lead { font-size: 0.94rem; line-height: 1.6; }
  .gm-chips { gap: 0.35rem; }
  .gm-chips span { font-size: 0.72rem; padding: 0.28rem 0.58rem; }
  .gm-actions { gap: 0.5rem; }
  .gm-actions .gm-btn-primary, .gm-actions .gm-btn { flex: 1 1 100%; justify-content: center; }
  .gm-panel { padding: 0.85rem; }
  .gm-steps { gap: 0.7rem; }
  .gm-prose { padding: 1.1rem; border-radius: 18px; }
  .gm-final { padding: 1.5rem 1rem; border-radius: 20px; }
}