/* ==========================================================================
   Nardocu — custom styles (Tailwind handles layout & utilities)
   Palette: black canvas, zinc neutrals, mint accent.
   ========================================================================== */

:root {
  --mint: #4af0b7;
  --mint-soft: #8ff7d3;
  --mint-deep: #257d5f;
  --ink: #141414;
  --zinc-100: #f4f4f5;
  --zinc-300: #d4d4d8;
  --zinc-400: #a1a1aa;
  --zinc-500: #71717a;
  --zinc-700: #3f3f46;
  --zinc-800: #27272a;
  --zinc-900: #18181b;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7.5rem;
}

body {
  overflow-x: clip;
  background: #000;
  color: var(--zinc-300);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--mint);
  color: #000;
}

/* ---------- Typography ---------- */

.text-gradient {
  background: linear-gradient(to right, #fff 0%, #fff 35%, #8a8a8a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-gradient-mint {
  background: linear-gradient(to right, var(--mint-deep), var(--mint), var(--mint-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mint);
}

/* ---------- Dividers ---------- */

.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--zinc-800) 12%, var(--zinc-100) 50%, var(--zinc-800) 88%, transparent);
  opacity: 0.55;
}

.divider-mint {
  height: 2px;
  background: linear-gradient(to right, var(--mint-deep), var(--mint), var(--mint-deep));
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border: 1px solid var(--mint);
  border-radius: 9999px;
  color: var(--mint);
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition: background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.btn:hover {
  background: var(--mint);
  color: #000;
  box-shadow: 0 0 36px rgba(74, 240, 183, 0.35);
}

.btn:focus-visible,
.tab:focus-visible,
.field:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.btn svg {
  transition: transform 0.25s ease;
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn-sm {
  padding: 0.6rem 1.25rem 0.7rem;
  font-size: 0.95rem;
}

.btn-solid {
  background: var(--mint);
  color: #000;
}

.btn-solid:hover {
  background: var(--mint-soft);
  border-color: var(--mint-soft);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--mint);
  transition: gap 0.2s ease;
}

.link-arrow:hover {
  gap: 0.7rem;
}

/* ---------- Surfaces ---------- */

.card {
  position: relative;
  border-radius: 1rem;
  border: 1px solid transparent;
  background:
    linear-gradient(180deg, #121214, #000) padding-box,
    linear-gradient(180deg, var(--zinc-700), var(--zinc-900) 70%) border-box;
}

.card-hover {
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px -30px rgba(74, 240, 183, 0.35);
}

.surface-fade {
  background: linear-gradient(180deg, var(--zinc-800), #000);
}

.bg-dots {
  background-image: radial-gradient(rgba(255, 255, 255, 0.09) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(ellipse 60% 55% at 50% 40%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 55% at 50% 40%, #000 30%, transparent 75%);
}

.glow-mint {
  background: radial-gradient(closest-side, rgba(74, 240, 183, 0.22), rgba(74, 240, 183, 0.06) 55%, transparent);
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 9999px;
  background: var(--zinc-700);
}

/* ---------- Form ---------- */

.field {
  width: 100%;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--zinc-800);
  border-radius: 0.75rem;
  padding: 0.85rem 1rem;
  color: #fff;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field::placeholder {
  color: var(--zinc-500);
}

.field:focus {
  outline: none;
  border-color: var(--mint);
  box-shadow: 0 0 0 4px rgba(74, 240, 183, 0.12);
}

select.field {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='1.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 1.1rem;
  padding-right: 2.5rem;
}

select.field option {
  background: var(--zinc-900);
}

/* ---------- Tabs ---------- */

.tab {
  position: relative;
  padding: 1rem 0.25rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--zinc-500);
  white-space: nowrap;
  transition: color 0.2s ease;
}

.tab:hover {
  color: var(--zinc-300);
}

.tab[aria-selected="true"] {
  color: #fff;
}

.tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(to right, var(--mint-deep), var(--mint), var(--mint-deep));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.tab[aria-selected="true"]::after {
  transform: scaleX(1);
}

.no-scrollbar {
  scrollbar-width: none;
}

.no-scrollbar::-webkit-scrollbar {
  display: none;
}

/* ---------- Logos ---------- */

.logo-mono {
  filter: grayscale(1) brightness(1.6);
  opacity: 0.6;
  transition: filter 0.3s ease, opacity 0.3s ease;
}

.logo-mono:hover {
  filter: none;
  opacity: 1;
}

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes dash {
  to { stroke-dashoffset: -400; }
}

@keyframes twinkle {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 1; }
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.55; }
  100% { transform: scale(1.9); opacity: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes blink {
  50% { opacity: 0; }
}

.orbit,
.orbit-rev {
  transform-box: view-box;
  transform-origin: 400px 280px;
  animation: spin 90s linear infinite;
}

.orbit-rev {
  animation-duration: 55s;
  animation-direction: reverse;
}

.flow {
  animation: dash 9s linear infinite;
}

.twinkle {
  animation: twinkle 4s ease-in-out infinite;
}

.pulse {
  transform-box: fill-box;
  transform-origin: center;
  animation: pulse-ring 3.2s ease-out infinite;
}

.float {
  animation: float 6s ease-in-out infinite;
}

.caret {
  animation: blink 1s steps(1) infinite;
}

/* Scroll reveal: content stays visible when JS is unavailable */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }

.js .progress-line {
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 1.8s cubic-bezier(0.2, 0.7, 0.2, 1) 0.2s;
}

.js .is-visible .progress-line {
  transform: scaleX(1);
}

.js .step {
  opacity: 0.25;
  transition: opacity 0.6s ease;
}

.js .is-visible .step { opacity: 1; }
.js .is-visible .step:nth-child(2) { transition-delay: 0.45s; }
.js .is-visible .step:nth-child(3) { transition-delay: 0.8s; }
.js .is-visible .step:nth-child(4) { transition-delay: 1.15s; }
.js .is-visible .step:nth-child(5) { transition-delay: 1.5s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .js .reveal,
  .js .step {
    opacity: 1;
    transform: none;
  }

  .js .progress-line {
    transform: none;
  }
}

/* Tab panels use display utilities, so make [hidden] win */
.tab-panel[hidden] {
  display: none !important;
}