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

:root {
  --bg:            #0f1115;
  --bg-elev:       #161922;
  --bg-card:       #171a23;
  --surface-hover: #1d2130;
  --border:        #262a38;
  --border-strong: #343a4d;
  --text:          #e6e8ef;
  --text-muted:    #9ba1b3;
  --text-dim:      #6b7285;
  --accent:        #6aa8ff;
  --accent-hover:  #8cc0ff;
  --accent-ink:    #0b1220;
  --tag-bg:        rgba(106, 168, 255, 0.12);
  --tag-fg:        #a6c6ff;
  --shadow:        0 1px 2px rgba(0,0,0,0.4), 0 10px 30px -12px rgba(0,0,0,0.45);
  --radius:        14px;
  --radius-sm:     8px;
}

:root[data-theme="light"],
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg:            #f7f7f8;
    --bg-elev:       #ffffff;
    --bg-card:       #ffffff;
    --surface-hover: #f1f2f6;
    --border:        #e4e6ec;
    --border-strong: #d2d5de;
    --text:          #15171c;
    --text-muted:    #5a6170;
    --text-dim:      #858b98;
    --accent:        #2b67d6;
    --accent-hover:  #1d4ea9;
    --accent-ink:    #ffffff;
    --tag-bg:        rgba(43, 103, 214, 0.10);
    --tag-fg:        #2b67d6;
    --shadow:        0 1px 2px rgba(16,24,40,0.06), 0 8px 24px -12px rgba(16,24,40,0.15);
  }
}

:root[data-theme="light"] {
  --bg:            #f7f7f8;
  --bg-elev:       #ffffff;
  --bg-card:       #ffffff;
  --surface-hover: #f1f2f6;
  --border:        #e4e6ec;
  --border-strong: #d2d5de;
  --text:          #15171c;
  --text-muted:    #5a6170;
  --text-dim:      #858b98;
  --accent:        #2b67d6;
  --accent-hover:  #1d4ea9;
  --accent-ink:    #ffffff;
  --tag-bg:        rgba(43, 103, 214, 0.10);
  --tag-fg:        #2b67d6;
  --shadow:        0 1px 2px rgba(16,24,40,0.06), 0 8px 24px -12px rgba(16,24,40,0.15);
}

/* ---------- Base ---------- */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Inter", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .2s ease, color .2s ease;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

h1, h2, h3 {
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 .4em;
}

.container {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--text); }

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background:
    radial-gradient(circle at 30% 30%, var(--accent), transparent 55%),
    linear-gradient(135deg, var(--accent), #9b7bff);
  box-shadow: 0 0 0 1px var(--border) inset;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}
.site-nav a {
  color: var(--text-muted);
  font-size: .95rem;
}
.site-nav a:hover { color: var(--text); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}
.theme-toggle:hover {
  color: var(--text);
  background: var(--surface-hover);
  border-color: var(--border-strong);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun  { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun  { display: block; }
  :root:not([data-theme="dark"]) .theme-toggle .icon-moon { display: none; }
}

/* ---------- Hero ---------- */

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 6vw, 4rem);
  background:
    radial-gradient(900px 420px at 10% -10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 60%),
    radial-gradient(700px 360px at 95% 0%, color-mix(in srgb, #9b7bff 16%, transparent), transparent 60%);
}

.eyebrow {
  display: inline-block;
  margin: 0 0 .8rem;
  color: var(--accent);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  max-width: 22ch;
}

.lede {
  color: var(--text-muted);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  max-width: 62ch;
  margin: 0 0 1.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .62rem 1.05rem;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--border-strong);
}

/* ---------- Apps section ---------- */

.apps { padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(3rem, 8vw, 5rem); }

.section-head { margin-bottom: 1.8rem; }
.section-head h2 {
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  margin-bottom: .25rem;
}
.section-head p {
  color: var(--text-muted);
  margin: 0;
}

.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

/* ---------- Card ---------- */

.card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.card-shot {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--bg-elev);
  border: 0;
  border-bottom: 1px solid var(--border);
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: zoom-in;
  overflow: hidden;
  position: relative;
}
.card-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.card-shot img.is-placeholder {
  object-fit: contain;
  padding: 1.5rem;
  opacity: .75;
}
.card:hover .card-shot img:not(.is-placeholder) {
  transform: scale(1.02);
}

.card-body {
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.15rem 1.15rem;
  flex: 1;
}

.card-meta {
  margin-bottom: .55rem;
}

.tag {
  display: inline-block;
  padding: .2rem .55rem;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-fg);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 .35rem;
}

.card-desc {
  color: var(--text-muted);
  font-size: .94rem;
  margin: 0 0 1.1rem;
  flex: 1;
}

.card-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}
.card-actions .btn {
  padding: .5rem .85rem;
  font-size: .88rem;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.4rem 0 2rem;
  margin-top: 2rem;
  color: var(--text-dim);
  font-size: .9rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
}
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--text); }

/* ---------- Lightbox ---------- */

.lightbox {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  max-width: none;
  max-height: none;
}
.lightbox[open] {
  width: 100vw;
  height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
}
.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.lightbox img {
  display: block;
  max-width: 95vw;
  max-height: 95vh;
  width: auto;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6);
  background: var(--bg-elev);
  user-select: none;
}
.lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  background: rgba(20, 22, 30, 0.7);
  color: #fff;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease;
}
.lightbox-close:hover {
  background: rgba(40, 44, 58, 0.85);
  border-color: rgba(255,255,255,0.3);
}
.lightbox-close svg { width: 20px; height: 20px; }

/* ---------- Focus ---------- */

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Motion preferences ---------- */

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