/* ═══════════════════════════════════════════════
   Trusound® — Global Styles
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display:ital@0;1&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Tokens ─────────────────────────────────── */
:root {
  --bg-primary:    #0c0e12;
  --bg-secondary:  #13161c;
  --bg-tertiary:   #1a1e26;
  --bg-card:       #161a22;
  --border-subtle: #222730;
  --border-hover:  #333a47;

  --text-primary:  #f0f0f0;
  --text-secondary:#9ba3b0;
  --text-muted:    #5e6677;

  --accent-orange: #e8722a;
  --accent-orange-dim: rgba(232, 114, 42, 0.12);
  --accent-purple: #6B2FA0;
  --accent-purple-dim: rgba(107, 47, 160, 0.10);

  --font-body:    'DM Sans', sans-serif;
  --font-heading: 'DM Serif Display', serif;
  --font-mono:    'JetBrains Mono', monospace;

  --nav-height: 72px;
  --max-width: 1200px;
  --section-pad: clamp(80px, 10vw, 140px);
}

/* ── Reset ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ── Utility ────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-orange);
}

.section-pad { padding: var(--section-pad) 0; }

/* ── Grain Overlay ──────────────────────────── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── Navigation ─────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(12, 14, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__wordmark {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.nav__wordmark sup {
  font-size: 0.45em;
  vertical-align: super;
  font-family: var(--font-body);
  font-weight: 400;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.25s;
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-orange);
  transition: width 0.3s;
}
.nav__link:hover { color: var(--text-primary); }
.nav__link:hover::after { width: 100%; }
.nav__link--active { color: var(--text-primary); }
.nav__link--active::after { width: 100%; }

.nav__cta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bg-primary);
  background: var(--accent-orange);
  padding: 10px 22px;
  border-radius: 4px;
  transition: background 0.25s, transform 0.2s;
}
.nav__cta:hover {
  background: #d4651f;
  transform: translateY(-1px);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: 0.3s;
}

@media (max-width: 768px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 48px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
  }
  .nav__links.open { transform: translateX(0); }
  .nav__link { font-size: 0.85rem; }
  .nav__cta { margin-top: 16px; }
}

/* ── Typography ─────────────────────────────── */
h1, h2, h3 { font-family: var(--font-heading); font-weight: 400; line-height: 1.15; }

h1 { font-size: clamp(2.4rem, 5.5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p { color: var(--text-secondary); max-width: 640px; }
p + p { margin-top: 1em; }

/* ── Buttons ────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: 4px;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--accent-orange);
  color: var(--bg-primary);
}
.btn--primary:hover {
  background: #d4651f;
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}
.btn--outline:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

.btn__arrow {
  transition: transform 0.3s;
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ── Cards ──────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: clamp(24px, 3vw, 36px);
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

/* ── Dividers ───────────────────────────────── */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border-subtle);
}

/* ── Footer ─────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
}

.footer__brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.footer__links {
  display: flex;
  gap: 24px;
}

.footer__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.25s;
}
.footer__link:hover { color: var(--text-primary); }

.footer__bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__bottom span {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer__bottom a {
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color 0.25s;
}
.footer__bottom a:hover { color: var(--accent-orange); }

/* ── Animations ─────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.animate-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger > * { transition-delay: calc(var(--i, 0) * 0.08s); }

/* ── Specific Sections ──────────────────────── */

/* Hero */
.hero {
  padding-top: calc(var(--nav-height) + clamp(60px, 10vw, 120px));
  padding-bottom: var(--section-pad);
  position: relative;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-orange-dim);
  border: 1px solid rgba(232, 114, 42, 0.2);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 28px;
  animation: fadeUp 0.8s ease both;
}
.hero__badge span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-orange);
}

.hero h1 {
  animation: fadeUp 0.8s 0.1s ease both;
  max-width: 800px;
}

.hero__sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  margin-top: 20px;
  max-width: 580px;
  animation: fadeUp 0.8s 0.2s ease both;
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.3s ease both;
}

/* Glow effect behind hero */
.hero__glow {
  position: absolute;
  top: 10%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232,114,42,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.service-card {
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent-orange);
  transition: height 0.4s ease;
  border-radius: 0 0 2px 0;
}
.service-card:hover::before { height: 100%; }

.service-card__number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.service-card h3 { margin-bottom: 10px; }

.service-card p {
  font-size: 0.88rem;
  line-height: 1.6;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}
.service-card__tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle);
  padding: 3px 10px;
  border-radius: 3px;
}

/* Work / Portfolio */
.work-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: clamp(28px, 4vw, 44px);
  transition: border-color 0.3s;
}
.work-card:hover { border-color: var(--border-hover); }

.work-card__label { margin-bottom: 8px; }
.work-card h3 { margin-bottom: 12px; font-size: clamp(1.3rem, 2.5vw, 1.7rem); }
.work-card p { font-size: 0.9rem; }

.work-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.work-card__tech {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-orange);
  background: var(--accent-orange-dim);
  border: 1px solid rgba(232,114,42,0.15);
  padding: 4px 10px;
  border-radius: 3px;
}

/* CTA Section */
.cta-section {
  text-align: center;
  padding: var(--section-pad) 0;
}
.cta-section h2 { margin-bottom: 16px; }
.cta-section p {
  margin: 0 auto 32px;
  max-width: 520px;
}

/* ── Page Headers ───────────────────────────── */
.page-header {
  padding-top: calc(var(--nav-height) + clamp(48px, 8vw, 96px));
  padding-bottom: clamp(40px, 6vw, 72px);
}
.page-header .label { margin-bottom: 12px; }
.page-header h1 { margin-bottom: 16px; }
.page-header p { font-size: 1.05rem; }

/* ── Services Detail Page ───────────────────── */
.service-detail {
  padding: clamp(40px, 6vw, 72px) 0;
  border-top: 1px solid var(--border-subtle);
}

.service-detail__header {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 24px;
}

.service-detail__num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-orange);
  flex-shrink: 0;
}

.service-detail h2 { font-size: clamp(1.4rem, 2.8vw, 2rem); }

.service-detail__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-left: clamp(0px, 4vw, 56px);
}

.service-detail__body p {
  font-size: 0.92rem;
  line-height: 1.7;
}

.service-detail__deliverables h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.service-detail__deliverables li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}
.service-detail__deliverables li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-orange);
  font-size: 0.8rem;
}

.service-detail__tools {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 20px;
  margin-left: clamp(0px, 4vw, 56px);
}

@media (max-width: 768px) {
  .service-detail__body {
    grid-template-columns: 1fr;
    margin-left: 0;
  }
  .service-detail__tools { margin-left: 0; }
}

/* ── About Page ─────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.about-grid h2 { margin-bottom: 16px; }
.about-grid p { font-size: 0.92rem; }
.about-grid p + p { margin-top: 14px; }

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
}

.partner-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 20px 28px;
  margin-top: 24px;
}

.partner-badge__icon {
  width: 36px;
  height: 36px;
  background: var(--accent-orange-dim);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-badge__text {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  line-height: 1.4;
}
.partner-badge__text strong {
  display: block;
  color: var(--text-primary);
  font-weight: 600;
}

/* Principles */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.principle {
  padding: 28px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
}
.principle h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.principle p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Portfolio Page ──────────────────────────── */
.case-study {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 24px;
}

.case-study__hero {
  padding: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}
.case-study__hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 100%;
  background: radial-gradient(circle at right, rgba(232,114,42,0.05), transparent 70%);
  pointer-events: none;
}

.case-study__hero .label { margin-bottom: 12px; }
.case-study__hero h2 { margin-bottom: 12px; }
.case-study__hero p { font-size: 0.95rem; }

.case-study__details {
  padding: clamp(24px, 4vw, 40px) clamp(32px, 5vw, 56px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.case-study__detail h4 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.case-study__detail p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.placeholder-card {
  background: var(--bg-card);
  border: 1px dashed var(--border-subtle);
  border-radius: 10px;
  padding: clamp(32px, 5vw, 56px);
  text-align: center;
  margin-bottom: 24px;
}
.placeholder-card h3 {
  margin-bottom: 8px;
  color: var(--text-muted);
}
.placeholder-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0 auto;
}

/* ── Contact Page ───────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}

.contact-info h3 { margin-bottom: 8px; font-size: 1.2rem; }
.contact-info p { font-size: 0.92rem; margin-bottom: 24px; }

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-orange);
  transition: opacity 0.25s;
}
.contact-email:hover { opacity: 0.8; }

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: clamp(28px, 4vw, 40px);
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: border-color 0.25s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-orange);
}
.form-group textarea { min-height: 140px; resize: vertical; }

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ── Scroll Reveal ──────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}