/* ─────────────────────────────────────────────────────────────
   THINK AWAY STUDIO — Design Tokens & Base
   ───────────────────────────────────────────────────────────── */

:root {
  /* Colors — derived from brand gradient */
  --ink: #000000;
  --bg: #0a0608;
  --bg-surface: #120a0d;
  --bg-elevated: #1a1014;
  --hairline: rgba(247, 242, 232, 0.08);
  --hairline-strong: rgba(247, 242, 232, 0.18);

  --fg: #f7f2e8;
  --fg-mute: #9a8f87;
  --fg-dim: #5a504b;

  --magenta: #d63a6c;
  --red: #e94b2e;
  --pink: #ff6fa8;
  --accent: #ff3d6e;
  --accent-soft: #ff6fa8;

  /* Type */
  --font-display: "Space Grotesk", "Helvetica Neue", sans-serif;
  --font-body: "Space Grotesk", "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-serif: "Instrument Serif", "Times New Roman", serif;

  /* Scale */
  --step-0: clamp(0.875rem, 0.85rem + 0.1vw, 0.95rem);
  --step-1: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --step-2: clamp(1.15rem, 1.05rem + 0.3vw, 1.35rem);
  --step-3: clamp(1.5rem, 1.3rem + 0.6vw, 1.95rem);
  --step-4: clamp(2rem, 1.7rem + 1.1vw, 2.85rem);
  --step-5: clamp(2.6rem, 2rem + 2.2vw, 4.2rem);
  --step-6: clamp(3.2rem, 2.2rem + 4vw, 5.6rem);

  /* Layout */
  --max: 1440px;
  --gutter: clamp(1.25rem, 1rem + 1.5vw, 2.5rem);
  --section-y: clamp(5rem, 4rem + 4vw, 9rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  touch-action: pan-y;
  width: 100%;
  max-width: 100vw;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--step-1);
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  position: relative;
}

img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
input, textarea, select { font: inherit; color: inherit; }

::selection { background: var(--accent); color: var(--ink); }

/* ─────────────────────────────────────────────────────────────
   Layout primitives
   ───────────────────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding-block: var(--section-y);
  position: relative;
}

.hairline { border-top: 1px solid var(--hairline); }
.hairline-b { border-bottom: 1px solid var(--hairline); }

/* ─────────────────────────────────────────────────────────────
   Typography utilities
   ───────────────────────────────────────────────────────────── */

.display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-wrap: balance;
}

.display-xl { font-size: var(--step-6); letter-spacing: -0.05em; }
.display-lg { font-size: var(--step-5); letter-spacing: -0.045em; }
.display-md { font-size: var(--step-4); letter-spacing: -0.035em; }
.display-sm { font-size: var(--step-3); letter-spacing: -0.025em; }

.serif-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-mute);
}

.eyebrow .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 0.6em;
  vertical-align: middle;
  transform: translateY(-1px);
}

.mute { color: var(--fg-mute); }
.dim { color: var(--fg-dim); }
.lead { font-size: var(--step-2); line-height: 1.4; color: var(--fg-mute); text-wrap: pretty; }
.mono { font-family: var(--font-mono); }
.upper { text-transform: uppercase; letter-spacing: 0.06em; }

.gradient-text {
  background: linear-gradient(95deg, var(--red) 0%, var(--magenta) 45%, var(--pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ─────────────────────────────────────────────────────────────
   Navigation
   ───────────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(10, 6, 8, 0.72);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom-color: var(--hairline);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.14rem;
  letter-spacing: 0.32em;
  color: var(--fg);
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--fg-mute);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
  text-transform: uppercase;
}
.nav-links a:hover { color: var(--fg); background: rgba(247, 242, 232, 0.05); }
.nav-links a.active { color: var(--fg); }
.nav-links a.active::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 8px;
  vertical-align: middle;
  transform: translateY(-1px);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  padding: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}
.lang-toggle button {
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--fg-mute);
  transition: all 0.2s var(--ease);
}
.lang-toggle button.active {
  color: var(--ink);
  background: var(--fg);
}

@media (max-width: 880px) {
  .nav-links { display: none; }
}

/* ─────────────────────────────────────────────────────────────
   Buttons
   ───────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 0.25s var(--ease);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--fg);
  color: var(--ink);
}
.btn-primary:hover {
  background: var(--accent);
  color: var(--fg);
  transform: translateY(-1px);
}

/* Smaller, less aggressive CTA in the top nav */
.nav-right .btn {
  padding: 9px 16px;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.btn-ghost {
  border-color: var(--hairline-strong);
  color: var(--fg);
}
.btn-ghost:hover {
  border-color: var(--fg);
  background: rgba(247, 242, 232, 0.04);
}

.btn-accent {
  background: var(--accent);
  color: var(--fg);
}
.btn-accent:hover {
  background: var(--red);
}

.btn-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--hairline-strong);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn-link:hover { border-color: var(--accent); color: var(--accent); }
.btn-link .arrow { transition: transform 0.25s var(--ease); }
.btn-link:hover .arrow { transform: translateX(4px); }

.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ─────────────────────────────────────────────────────────────
   Cards & surfaces
   ───────────────────────────────────────────────────────────── */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--hairline);
  border-radius: 20px;
  padding: 32px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), transform 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--hairline-strong);
  background: var(--bg-elevated);
}

.card-glow::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--magenta), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.card-glow:hover::before { opacity: 1; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.tag-accent {
  border-color: rgba(255, 61, 110, 0.4);
  background: rgba(255, 61, 110, 0.08);
  color: var(--pink);
}

/* ─────────────────────────────────────────────────────────────
   Gradient background
   ───────────────────────────────────────────────────────────── */

.gradient-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.gradient-bg::before {
  content: "";
  position: absolute;
  inset: -10%;
  background: url("assets/gradient.png") center/cover no-repeat;
  opacity: 0.85;
  filter: blur(0px);
}

.gradient-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, var(--bg) 95%);
}

/* Subtle blob for non-hero sections */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
  pointer-events: none;
}
.blob-magenta { background: var(--magenta); }
.blob-red { background: var(--red); }
.blob-pink { background: var(--pink); }

/* ─────────────────────────────────────────────────────────────
   Section header
   ───────────────────────────────────────────────────────────── */

.section-head {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  margin-bottom: 72px;
  align-items: end;
}

.section-head-stack > * + * { margin-top: 16px; }

.section-head .title {
  font-family: var(--font-display);
  font-size: var(--step-4);
  letter-spacing: -0.035em;
  line-height: 1.0;
  text-wrap: balance;
}

.section-head .desc {
  max-width: 560px;
  color: var(--fg-mute);
  font-size: var(--step-2);
  line-height: 1.4;
  text-wrap: pretty;
}

@media (max-width: 880px) {
  .section-head {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 48px;
  }
}

/* ─────────────────────────────────────────────────────────────
   Footer
   ───────────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--hairline);
  padding: 80px var(--gutter) 32px;
  position: relative;
  overflow: hidden;
}

.footer-wordmark {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 13rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 0.9;
  color: var(--fg);
  text-align: center;
  background: linear-gradient(180deg, var(--fg) 0%, rgba(247, 242, 232, 0.05) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  padding-block: 32px 0;
  user-select: none;
}

.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 48px;
}
.footer-cols h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 20px;
}
.footer-cols a {
  display: block;
  padding: 6px 0;
  color: var(--fg-mute);
  transition: color 0.2s var(--ease);
}
.footer-cols a:hover { color: var(--fg); }

.footer-cols .col-1 p {
  color: var(--fg-mute);
  font-size: 0.95rem;
  max-width: 320px;
  line-height: 1.5;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  text-transform: uppercase;
}

@media (max-width: 880px) {
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; }
}

/* ─────────────────────────────────────────────────────────────
   Mockup components (placeholder UI in CSS)
   ───────────────────────────────────────────────────────────── */

.mockup {
  background: linear-gradient(160deg, #1f1316 0%, #0e090b 100%);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-mute);
  position: relative;
  overflow: hidden;
}

.mockup-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}
.mockup-bar .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-dim);
}
.mockup-bar .dot:nth-child(1) { background: #5a3037; }
.mockup-bar .dot:nth-child(2) { background: #5a4737; }
.mockup-bar .dot:nth-child(3) { background: #375a3f; }
.mockup-bar .title {
  margin-left: auto;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.bar-row {
  height: 8px;
  border-radius: 4px;
  background: rgba(247, 242, 232, 0.08);
}
.bar-row.short { width: 40%; }
.bar-row.mid { width: 70%; }
.bar-row.accent { background: linear-gradient(90deg, var(--magenta), var(--pink)); width: 30%; }

/* ─────────────────────────────────────────────────────────────
   Marquee
   ───────────────────────────────────────────────────────────── */

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 22px 0;
  background: var(--bg);
}
.marquee-track {
  display: flex;
  gap: 56px;
  white-space: nowrap;
  animation: marquee 40s linear infinite;
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 56px;
}
.marquee-track .sep {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ─────────────────────────────────────────────────────────────
   Reveal animation
   ───────────────────────────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ─────────────────────────────────────────────────────────────
   Form
   ───────────────────────────────────────────────────────────── */

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.form-field label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.form-field input,
.form-field textarea,
.form-field select {
  background: var(--bg-surface);
  border: 1px solid var(--hairline-strong);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: var(--step-1);
  color: var(--fg);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
  width: 100%;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-elevated);
}
.form-field textarea { min-height: 120px; resize: vertical; font-family: inherit; }
.form-field .hint { font-size: 0.8rem; color: var(--fg-dim); }
.form-field .error { font-size: 0.8rem; color: var(--pink); display: none; }
.form-field.has-error input,
.form-field.has-error textarea,
.form-field.has-error select { border-color: var(--accent); }
.form-field.has-error .error { display: block; }

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  padding: 10px 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--fg-mute);
  cursor: pointer;
  transition: all 0.2s var(--ease);
  background: transparent;
  text-transform: uppercase;
}
.chip:hover { color: var(--fg); border-color: var(--fg-mute); }
.chip.selected {
  background: var(--fg);
  color: var(--ink);
  border-color: var(--fg);
}

/* WhatsApp floating button */
.wa-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35), 0 2px 8px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}
.wa-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5), 0 4px 12px rgba(0, 0, 0, 0.25);
}
.wa-fab svg { width: 30px; height: 30px; fill: #fff; }
@media (max-width: 640px) {
  .wa-fab { bottom: 16px; right: 16px; width: 52px; height: 52px; }
  .wa-fab svg { width: 26px; height: 26px; }
}