/* =========================================================
   The AI-Native Game Guru
   ========================================================= */

:root {
  /* Palette (drawn from the logo and badge art) */
  --space: #06122A;        /* page background */
  --hull: #0C2146;         /* studio plates */
  --hull-raised: #122C5A;  /* modules, tiles */
  --rivet: #1E4380;        /* borders */
  --plasma: #38D6F5;       /* primary accent, focus */
  --thruster: #1B78E0;     /* secondary accent */
  --coin: #F4B533;         /* reward / play accent */
  --ink: #E4EEFF;          /* body text */
  --ink-dim: #9DB2D6;      /* secondary text */
  --ice: #EAF4FF;          /* header plate behind the logo */

  --font-display: "Chakra Petch", "Segoe UI", "Trebuchet MS", sans-serif;
  --font-body: "Barlow", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 50% 0%, rgba(27, 120, 224, .18), transparent 70%),
    var(--space);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.55;
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4, h5 { margin: 0; font-weight: inherit; font-size: inherit; }

:focus-visible {
  outline: 3px solid var(--plasma);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: .6rem 1rem;
  background: var(--plasma);
  color: var(--space);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(180deg, #FFFFFF 0%, var(--ice) 100%);
  padding: clamp(1.5rem, 4vw, 3rem) 1.25rem clamp(2.5rem, 6vw, 4.5rem);
  text-align: center;
  /* angled lower edge, like a title-screen banner */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.5vw), 50% 100%, 0 calc(100% - 2.5vw));
}

.logo img {
  margin: 0 auto;
  width: min(760px, 100%);
}

.tagline {
  margin: 1rem auto 0;
  max-width: 34em;
  color: #22406F;
  text-wrap: balance;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 500;
}

/* ---------- Layout ---------- */
.studios {
  width: min(1080px, 100% - 2rem);
  margin: clamp(2rem, 5vw, 3.5rem) auto 0;
  display: grid;
  gap: 1rem;
}
.studios:focus { outline: none; }

.noscript {
  text-align: center;
  color: var(--ink-dim);
}

/* ---------- Accordion (shared) ---------- */
.acc-trigger {
  all: unset;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  cursor: pointer;
  text-align: left;
}
.acc-trigger:focus-visible {
  outline: 3px solid var(--plasma);
  outline-offset: 3px;
}

.chevron {
  flex: none;
  width: 2rem;
  height: 2rem;
  margin-left: auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid var(--rivet);
  transition: transform .3s var(--ease), border-color .2s, background-color .2s;
}
.chevron::before {
  content: "";
  width: .5rem;
  height: .5rem;
  border-right: 2px solid var(--plasma);
  border-bottom: 2px solid var(--plasma);
  transform: translateY(-2px) rotate(45deg);
}
.acc-trigger[aria-expanded="true"] > .chevron { transform: rotate(180deg); }
.acc-trigger:hover > .chevron { border-color: var(--plasma); }

.acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s var(--ease);
}
.acc-panel.is-open { grid-template-rows: 1fr; }
.acc-panel-inner { overflow: hidden; min-height: 0; }

/* ---------- Studio plates ---------- */
.studio {
  background: var(--hull);
  border: 2px solid var(--rivet);
  border-left: 8px solid var(--thruster);
  border-radius: var(--radius-lg);
  transition: border-color .2s;
}
.studio:has(> .studio-heading [aria-expanded="true"]) {
  border-color: var(--thruster);
  border-left-color: var(--plasma);
}

.studio-trigger {
  padding: 1rem 1.25rem 1rem 1rem;
  border-radius: var(--radius-lg);
}

.studio-icon {
  flex: none;
  width: clamp(150px, 24vw, 240px);
  height: clamp(70px, 11vw, 112px);
  object-fit: contain;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, .45));
}
.icon-fallback {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--plasma), var(--thruster) 60%, var(--hull-raised));
  border: 3px solid var(--coin);
  color: var(--space);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
}

.studio-text { display: grid; }
.studio-num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .95rem;
  color: var(--plasma);
  letter-spacing: .04em;
}
.studio-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.15;
  color: #FFFFFF;
}
.studio-meta {
  margin-left: auto;
  color: var(--ink-dim);
  font-size: .95rem;
  white-space: nowrap;
}
.studio-meta + .chevron { margin-left: .5rem; }

.modules {
  display: grid;
  gap: .625rem;
  padding: 0 1rem 1rem;
}

/* ---------- Module rows ---------- */
.module {
  background: var(--hull-raised);
  border: 1px solid var(--rivet);
  border-radius: var(--radius-md);
}
.module:has(> .module-heading [aria-expanded="true"]) {
  border-color: var(--plasma);
}

.module-trigger {
  align-items: flex-start;
  padding: .9rem 1rem;
  border-radius: var(--radius-md);
}
.module-trigger > .chevron { align-self: center; width: 1.75rem; height: 1.75rem; }

.module-num {
  flex: none;
  min-width: 5.5rem;
  padding-top: .2rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .9rem;
  color: var(--coin);
}
.module-text { display: grid; gap: .2rem; }
.module-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1.25;
  color: #FFFFFF;
}
.module-desc {
  color: var(--ink-dim);
  font-size: .98rem;
  max-width: 68ch;
}

/* ---------- Element tiles ---------- */
.tiles {
  list-style: none;
  margin: 0;
  padding: .25rem 1rem 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: .75rem;
}

.tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  padding: 1rem .75rem;
  background: var(--hull);
  border: 1px solid var(--rivet);
  border-radius: var(--radius-md);
  text-align: center;
}
.tile-icon { width: 96px; height: 96px; }
.tile-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.25;
  color: #FFFFFF;
  flex: 1;
}

.tile--sprints {
  grid-column: 1 / -1;
  align-items: stretch;
  text-align: left;
  background:
    linear-gradient(90deg, rgba(56, 214, 245, .07), transparent 60%),
    var(--hull);
}
.tile--sprints > .tile-name { flex: none; font-size: 1.1rem; }

.sprints-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: .75rem;
}
.sprint {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: .75rem .7rem .85rem;
  background: var(--hull-raised);
  border-radius: var(--radius-sm);
}
.sprint-icon { width: 72px; height: 72px; }
.sprint-name {
  margin-top: .35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: #FFFFFF;
}
.parts {
  list-style: none;
  width: 100%;
  margin: .5rem 0 0;
  padding: 0;
  display: grid;
  gap: .35rem;
}
.part {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}
.part-name { color: var(--ink-dim); font-size: .95rem; white-space: nowrap; }
.part .placeholder { font-size: .72rem; padding: .25rem .45rem; }

@media (min-width: 800px) {
  .tiles { grid-template-columns: repeat(4, 1fr); }
  .tile--wide {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 96px 1fr;
    grid-template-rows: 1fr auto 1fr;
    column-gap: 1rem;
    text-align: left;
    justify-items: start;
  }
  .tile--wide .tile-icon { grid-row: 1 / 4; }
  .tile--wide .tile-name { grid-row: 2; flex: none; font-size: 1.1rem; }
  .tile--wide > .watch,
  .tile--wide > .placeholder { grid-row: 3; align-self: start; }
  .tile--wide .tile-name { align-self: end; }
}

/* ---------- Watch links / placeholders ---------- */
.watch {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .35rem .85rem .35rem .6rem;
  border-radius: 999px;
  background: var(--coin);
  color: var(--space);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  transition: background-color .15s, transform .15s;
}
.watch:hover { background: #FFD066; transform: translateY(-1px); }
.watch-play {
  width: 0;
  height: 0;
  border-top: .35rem solid transparent;
  border-bottom: .35rem solid transparent;
  border-left: .55rem solid currentColor;
}

.placeholder {
  display: inline-block;
  padding: .3rem .6rem;
  border: 1px dashed var(--rivet);
  border-radius: var(--radius-sm);
  color: var(--ink-dim);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 1rem 2.5rem;
  border-top: 1px solid var(--rivet);
  text-align: center;
  color: var(--ink-dim);
  font-size: .9rem;
}
.site-footer p { margin: 0; }

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  .studio-trigger { gap: .75rem; padding: .85rem .9rem .85rem .75rem; }
  .studio-trigger { flex-wrap: wrap; }
  .studio-icon { width: 100%; height: 88px; order: -1; }
  .studio-text { flex: 1; }
  .icon-fallback { width: 56px; height: 56px; font-size: 1.6rem; }
  .studio-meta { display: none; }
  .modules { padding: 0 .6rem .6rem; }
  .module-trigger { flex-wrap: wrap; row-gap: .15rem; }
  .module-num { min-width: 0; width: 100%; padding-top: 0; order: -1; }
  .module-text { flex: 1; }
  .tiles { grid-template-columns: repeat(2, 1fr); padding: .25rem .6rem .75rem; }
  .tile-icon { width: 72px; height: 72px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}