/* INFINITI DASH STUDIO — blacked-out automotive aesthetic */
:root {
  --bg: #050507;
  --bg2: #0B0E12;
  --panel: #0D1015;
  --panel2: #12161D;
  --line: #1E242E;
  --red: #E8384F;
  --red-dk: #8E1B2C;
  --text: #EDEFF3;
  --dim: #9AA2B5;
  --glow: 0 0 18px rgba(232, 56, 79, .45);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-tap-highlight-color: transparent;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ---------- nav ---------- */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(5, 5, 7, .88);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .7);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.nav-logo { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: 2px; font-size: 15px; }
.nav-logo span { color: var(--red); text-shadow: 0 0 12px rgba(232, 56, 79, .6); }
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  color: var(--dim); text-decoration: none; font-size: 13px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; border-radius: 8px;
}
.nav-links a:hover { color: var(--text); background: #141821; }

/* ---------- hero ---------- */
.hero {
  background:
    radial-gradient(ellipse 70% 55% at 50% 0%, rgba(232, 56, 79, .14), transparent 70%),
    radial-gradient(ellipse 90% 70% at 50% 110%, rgba(40, 60, 120, .12), transparent 70%),
    var(--bg);
  padding: 84px 20px 72px; text-align: center;
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 760px; margin: 0 auto; }
.hero-badge {
  display: inline-block; font-size: 12px; letter-spacing: 3px; font-weight: 700;
  color: var(--red); border: 1px solid rgba(232, 56, 79, .5); border-radius: 999px;
  padding: 7px 18px; margin-bottom: 26px; text-shadow: 0 0 10px rgba(232, 56, 79, .5);
  box-shadow: inset 0 0 14px rgba(232, 56, 79, .12), var(--glow);
}
.hero h1 {
  font-size: clamp(44px, 9vw, 92px); font-weight: 900; letter-spacing: 4px; line-height: 1.02;
  color: #fff;
  text-shadow: 0 2px 0 #000, 0 0 34px rgba(232, 56, 79, .55), 0 10px 40px rgba(0, 0, 0, .9);
}
.hero-sub { margin: 22px 0 30px; font-size: clamp(16px, 2.6vw, 21px); color: var(--dim); }
.hero-meta { margin-top: 26px; font-size: 12px; letter-spacing: 2px; color: #5B6373; text-transform: uppercase; }

/* ---------- glossy buttons ---------- */
.btn-glossy {
  display: inline-block; cursor: pointer; border: 1px solid #3A4150;
  color: #fff; font-weight: 800; letter-spacing: 2px; text-transform: uppercase;
  text-decoration: none; border-radius: 14px; padding: 16px 34px; font-size: 15px;
  background: linear-gradient(180deg, #4A5160 0%, #232833 45%, #12151B 55%, #1B2029 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .28),
    inset 0 -2px 6px rgba(0, 0, 0, .55),
    0 6px 18px rgba(0, 0, 0, .7),
    0 0 22px rgba(232, 56, 79, .25);
  text-shadow: 0 2px 3px rgba(0, 0, 0, .8);
  transition: transform .08s ease, box-shadow .15s ease;
}
.btn-glossy:hover { box-shadow: inset 0 1px 0 rgba(255,255,255,.32), inset 0 -2px 6px rgba(0,0,0,.55), 0 6px 18px rgba(0,0,0,.7), 0 0 30px rgba(232,56,79,.5); }
.btn-glossy:active { transform: translateY(2px); box-shadow: inset 0 2px 8px rgba(0,0,0,.6), 0 2px 8px rgba(0,0,0,.6); }
.btn-big { font-size: 17px; padding: 18px 44px; }

/* ---------- sections / cards ---------- */
.section { padding: 56px 0; }
.sec-title {
  font-size: clamp(22px, 4vw, 32px); font-weight: 900; letter-spacing: 3px;
  margin-bottom: 8px; display: flex; align-items: center; gap: 14px;
  text-shadow: 0 2px 0 #000, 0 0 20px rgba(232, 56, 79, .35);
}
.sec-bar { width: 8px; height: 34px; background: linear-gradient(180deg, var(--red), var(--red-dk)); border-radius: 4px; box-shadow: var(--glow); }
.sec-sub { color: var(--dim); margin-bottom: 26px; font-size: 15px; }
.card {
  background: linear-gradient(180deg, var(--panel2) 0%, var(--panel) 100%);
  border: 1px solid var(--line); border-radius: 16px; padding: 26px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .06),
    inset 0 -1px 0 rgba(0, 0, 0, .5),
    0 12px 32px rgba(0, 0, 0, .65);
}
.story-card p { margin-bottom: 14px; color: #C9CFD9; font-size: 16px; }
.story-card p:last-child { margin-bottom: 0; }
.story-list { margin: 0 0 14px 0; padding: 0; list-style: none; }
.story-list li {
  position: relative; margin-bottom: 12px; padding-left: 22px;
  color: #C9CFD9; font-size: 16px; line-height: 1.5;
}
.story-list li:last-child { margin-bottom: 0; }
.story-list li::before {
  content: ""; position: absolute; left: 2px; top: 8px;
  width: 8px; height: 8px; transform: rotate(45deg);
  background: var(--red); box-shadow: 0 0 8px rgba(232,56,79,.7);
}
.story-list li strong { color: #fff; }
.story-close { color: var(--red) !important; font-weight: 800; letter-spacing: 1px; }

/* ---------- compatibility ---------- */
.compat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.compat-head { font-weight: 900; letter-spacing: 2px; font-size: 18px; margin-bottom: 12px; }
.works .compat-head { color: #2BD96A; text-shadow: 0 0 14px rgba(43, 217, 106, .5); }
.noworks .compat-head { color: var(--red); text-shadow: 0 0 14px rgba(232, 56, 79, .5); }
.compat-card p { color: #C9CFD9; font-size: 15px; margin-bottom: 10px; }
.compat-note { color: var(--dim); font-size: 13px; }

/* ---------- backgrounds ---------- */
.bg-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.bg-card {
  cursor: pointer; background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 2px solid var(--line); border-radius: 14px; padding: 10px; color: var(--text);
  font-weight: 700; font-size: 14px; letter-spacing: .5px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 8px 22px rgba(0,0,0,.6);
  transition: border-color .15s ease, box-shadow .15s ease, transform .08s ease;
}
.bg-card canvas { width: 100%; height: auto; display: block; border-radius: 8px; background: #000; }
.bg-card span { display: block; padding: 10px 4px 4px; }
.bg-card:hover { transform: translateY(-2px); }
.bg-card.selected { border-color: var(--red); box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 8px 22px rgba(0,0,0,.6), var(--glow); }

/* ---------- builds ---------- */
.build-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.build-card {
  cursor: pointer; background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 2px solid var(--line); border-radius: 14px; padding: 10px; color: var(--text);
  text-align: left; box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 8px 22px rgba(0,0,0,.6);
  transition: border-color .15s ease, box-shadow .15s ease, transform .08s ease;
}
.build-card canvas { width: 100%; height: auto; display: block; border-radius: 8px; background: #000; }
.build-card .bname { display: block; font-weight: 800; font-size: 14px; letter-spacing: .5px; padding: 10px 4px 2px; }
.build-card .bdesc { display: block; font-size: 12px; color: var(--dim); padding: 0 4px 6px; }
.build-card:hover { transform: translateY(-2px); border-color: #3A4150; }
.build-card.selected { border-color: var(--red); box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 8px 22px rgba(0,0,0,.6), var(--glow); }

/* ---------- studio layout ---------- */
.studio-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
.controls { display: flex; flex-direction: column; gap: 16px; }
.ctrl-card h3 { font-size: 13px; letter-spacing: 2px; color: var(--dim); margin-bottom: 14px; font-weight: 800; }
.ctrl-card h3.mt { margin-top: 22px; }
.hint { font-size: 12.5px; color: #6B7484; margin-top: 10px; }
.hint.center, .center { text-align: center; }

/* swatches */
.swatch-row { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch {
  width: 44px; height: 44px; border-radius: 50%; cursor: pointer;
  border: 2px solid #2A2F38;
  box-shadow: inset 0 2px 4px rgba(255,255,255,.25), inset 0 -3px 6px rgba(0,0,0,.5), 0 4px 10px rgba(0,0,0,.6);
  transition: transform .08s ease, border-color .15s ease, box-shadow .15s ease;
}
.swatch:hover { transform: scale(1.1); }
.swatch.selected { border-color: #fff; box-shadow: inset 0 2px 4px rgba(255,255,255,.25), 0 0 16px currentColor; }
.rgb-row { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.rgb-row label { font-size: 12px; font-weight: 800; color: var(--dim); display: flex; align-items: center; gap: 8px; }
.hex-out {
  margin-left: auto; font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 800;
  background: #000; border: 1px solid var(--line); border-radius: 8px; padding: 8px 14px; letter-spacing: 1px;
}

/* inputs */
.text-input, .select-input {
  width: 100%; background: #05060A; border: 1px solid var(--line); border-radius: 10px;
  color: var(--text); padding: 13px 14px; font-size: 15px;
  box-shadow: inset 0 2px 6px rgba(0,0,0,.6);
}
.text-input:focus, .select-input:focus { outline: none; border-color: var(--red); box-shadow: inset 0 2px 6px rgba(0,0,0,.6), 0 0 12px rgba(232,56,79,.35); }
.select-input { appearance: none; }

/* bg type buttons */
.bgtype-row { display: flex; flex-wrap: wrap; gap: 8px; }
.bgtype-btn {
  cursor: pointer; background: #141821; border: 1px solid var(--line); color: var(--dim);
  border-radius: 9px; padding: 9px 12px; font-size: 12.5px; font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
}
.bgtype-btn.on { color: #fff; border-color: var(--red); background: #1D1216; box-shadow: var(--glow); }
.bgcolors-row { display: flex; gap: 18px; margin-top: 14px; }
.bgcolors-row label { font-size: 12.5px; color: var(--dim); font-weight: 700; display: flex; align-items: center; gap: 10px; }
input[type="color"] { width: 52px; height: 38px; border: 1px solid var(--line); border-radius: 8px; background: #000; padding: 3px; cursor: pointer; }

/* segmented */
.unit-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.unit-row:last-child { margin-bottom: 0; }
.unit-row > span { font-size: 14px; color: var(--dim); font-weight: 700; }
.seg { display: flex; background: #05060A; border: 1px solid var(--line); border-radius: 10px; padding: 3px; box-shadow: inset 0 2px 6px rgba(0,0,0,.6); }
.seg button {
  cursor: pointer; border: none; background: transparent; color: var(--dim);
  font-weight: 800; font-size: 13px; padding: 9px 16px; border-radius: 7px; letter-spacing: .5px;
}
.seg button.on {
  color: #fff; background: linear-gradient(180deg, #3A4150, #1B2029);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.22), 0 0 12px rgba(232,56,79,.4);
  border: 1px solid rgba(232,56,79,.55);
}

/* sliders */
input[type="range"] { -webkit-appearance: none; appearance: none; height: 8px; border-radius: 6px;
  background: linear-gradient(180deg, #000, #1B2029); border: 1px solid var(--line);
  box-shadow: inset 0 2px 4px rgba(0,0,0,.7); cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6B7484, #232833 70%);
  border: 2px solid #4A5160; box-shadow: 0 3px 8px rgba(0,0,0,.7), 0 0 10px rgba(232,56,79,.35); }
input[type="range"]::-moz-range-thumb { width: 24px; height: 24px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6B7484, #232833 70%);
  border: 2px solid #4A5160; box-shadow: 0 3px 8px rgba(0,0,0,.7); }
.rgb-row input[type="range"] { width: 90px; }
.slider-row { display: flex; align-items: center; gap: 16px; }
.slider-row input[type="range"] { flex: 1; }
.shift-val { font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 800; color: var(--red);
  text-shadow: 0 0 12px rgba(232,56,79,.5); min-width: 110px; text-align: right; }

/* chips + toggle */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  cursor: pointer; border: 1px solid var(--line); background: #141821; color: var(--dim);
  border-radius: 999px; padding: 10px 16px; font-size: 12.5px; font-weight: 800; letter-spacing: 1px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
}
.chip.on { color: #fff; border-color: var(--red); background: linear-gradient(180deg, #2A1218, #16090D); box-shadow: var(--glow); }
.toggle-btn {
  cursor: pointer; border: 1px solid var(--line); background: #141821; color: var(--dim);
  border-radius: 10px; padding: 11px 26px; font-weight: 800; letter-spacing: 2px; font-size: 13px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
}
.toggle-btn.on { color: #fff; border-color: var(--red); background: linear-gradient(180deg, #2A1218, #16090D); box-shadow: var(--glow); }

/* ---------- preview ---------- */
.preview-col { position: sticky; top: 76px; }
.preview-3d { perspective: 1400px; }
.preview-3d canvas {
  width: 100%; height: auto; display: block; border-radius: 14px; background: #000;
  transform: rotateX(5deg) rotateY(-7deg);
  border: 1px solid #2A2F38;
  box-shadow:
    0 30px 70px rgba(0, 0, 0, .85),
    0 0 44px rgba(232, 56, 79, .18),
    inset 0 0 0 1px rgba(255, 255, 255, .04);
}

/* ---------- download / install ---------- */
.dl-card { text-align: center; }
.dl-card > p { color: #C9CFD9; margin-bottom: 14px; }
.dl-list { list-style: none; margin: 0 auto 24px; max-width: 520px; text-align: left; }
.dl-list li { padding: 10px 14px; margin-bottom: 8px; background: #05060A; border: 1px solid var(--line);
  border-radius: 10px; font-size: 14px; color: var(--dim); box-shadow: inset 0 2px 6px rgba(0,0,0,.5); }
.dl-list strong { color: var(--text); font-family: ui-monospace, Menlo, Consolas, monospace; }
#dlNote { margin-top: 16px; min-height: 20px; font-weight: 700; }
.install-list { padding-left: 22px; }
.install-list li { margin-bottom: 13px; color: #C9CFD9; font-size: 15px; }
.install-list li::marker { color: var(--red); font-weight: 800; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line); padding: 30px 20px; text-align: center;
  color: #5B6373; font-size: 12.5px; letter-spacing: 2px; text-transform: uppercase;
  background: #030304;
}

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .studio-grid { grid-template-columns: 1fr; }
  .preview-col { position: static; order: -1; }
  .compat-grid { grid-template-columns: 1fr; }
  .bg-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links a { padding: 8px 8px; font-size: 12px; }
}
@media (max-width: 560px) {
  .bg-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .section { padding: 40px 0; }
  .rgb-row input[type="range"] { width: 70px; }
}