/* ============================================
   ALTREONIX — Complete Design System
   Modern Product Studio Aesthetic
   ============================================ */

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

/* --- Design Tokens --- */
:root {
  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Noto Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing (8px scale) */
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 40px;
  --sp-6: 48px;
  --sp-8: 64px;
  --sp-10: 80px;
  --sp-12: 96px;
  --sp-16: 128px;

  /* Layout */
  --container-max: 1200px;
  --line-max: 70ch;
  --nav-height: 64px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-nav: 16px;
  --radius-full: 9999px;

  /* Motion */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --duration-reveal: 500ms;
  --duration-theme: 300ms;

  /* Accent (shared) */
  --accent: #961B2B;
  --accent-glow: rgba(150, 27, 43, 0.3);

  /* Canonical color tokens */
  --color-accent: #961B2B;
}

/* --- Dark Mode (default) --- */
body.dark-mode {
  --bg-primary: #131210;
  --bg-surface: #1C1A16;
  --bg-elevated: #252320;
  --text-primary: #EEEBE5;
  --text-secondary: #ACA89F;
  --text-tertiary: #7C7972;
  --border-subtle: rgba(238, 235, 229, 0.04);
  --border-default: rgba(238, 235, 229, 0.06);
  --border-strong: rgba(238, 235, 229, 0.10);
  --glass-bg: rgba(238, 235, 229, 0.03);
  --glass-bg-strong: rgba(238, 235, 229, 0.05);
  --glass-border: rgba(238, 235, 229, 0.06);
  --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 16px 56px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 24px rgba(150, 27, 43, 0.2);
  --nav-bg: rgba(19, 18, 16, 0.8);
  --scrollbar-track: #1C1A16;
  --scrollbar-thumb: #2E2C26;

  /* Canonical color tokens — dark */
  --color-bg: #131210;
  --color-ink: #EEEBE5;
  --color-surface: #1C1A16;
}

/* --- Light Mode --- */
body.light-mode {
  --bg-primary: #F2EDE4;
  --bg-surface: #FAF8F3;
  --bg-elevated: #F6F2EB;
  --text-primary: #1C1A15;
  --text-secondary: #6D6960;
  --text-tertiary: #97938A;
  --border-subtle: rgba(0, 0, 0, 0.03);
  --border-default: rgba(0, 0, 0, 0.05);
  --border-strong: rgba(0, 0, 0, 0.10);
  --glass-bg: rgba(242, 237, 228, 0.7);
  --glass-bg-strong: rgba(242, 237, 228, 0.85);
  --glass-border: rgba(0, 0, 0, 0.04);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 24px rgba(150, 27, 43, 0.15);
  --nav-bg: rgba(242, 237, 228, 0.8);
  --scrollbar-track: #E8E2D8;
  --scrollbar-thumb: #C5BFB5;

  /* Canonical color tokens — light */
  --color-bg: #F2EDE4;
  --color-ink: #1C1A15;
  --color-surface: #E5DFD5;
}

/* --- Base --- */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--duration-theme) ease, color var(--duration-theme) ease;
  overflow-x: hidden;
}

/* Scrollbar */
body::-webkit-scrollbar { width: 8px; }
body::-webkit-scrollbar-track { background: var(--scrollbar-track); }
body::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 4px; }

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--duration-fast) ease;
}

a:hover { opacity: 0.8; }

ul, ol { list-style: none; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.15;
  transition: color var(--duration-theme) ease;
}

h1 {
  font-weight: 900;
  font-size: clamp(3rem, 6.5vw, 6.5rem);
  letter-spacing: -0.035em;
  line-height: 1.02;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

h4 {
  font-size: 1.0625rem;
  font-weight: 600;
}

p {
  max-width: var(--line-max);
  margin-bottom: var(--sp-2);
  transition: color var(--duration-theme) ease;
}

p:last-child { margin-bottom: 0; }

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.section {
  padding: var(--sp-16) 0;
}

.section--surface {
  background-color: var(--bg-surface);
  transition: background-color var(--duration-theme) ease;
}

/* --- Section Labels --- */
.section-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 0;
}

.section-label + .section-title {
  margin-top: 6px;
}

.section-title {
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--sp-2);
}

.section-sub {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  max-width: var(--line-max);
  margin-bottom: var(--sp-8);
  line-height: 1.7;
}

/* ============================================
   SCROLL PROGRESS
   ============================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 10000;
  background: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 60ms linear;
}

/* ============================================
   NAVBAR — Floating Glass
   ============================================ */
.navbar {
  position: fixed;
  top: var(--sp-2);
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - var(--sp-6));
  max-width: var(--container-max);
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-nav);
  box-shadow: var(--shadow-soft);
  padding: 0 var(--sp-3);
  transition: background var(--duration-theme) ease, border-color var(--duration-theme) ease, box-shadow var(--duration-theme) ease;
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.navbar__logo {
  display: flex;
  align-items: center;
  min-width: 40px;
  height: auto;
  text-decoration: none;
}

.navbar__logo img {
  display: block;
  width: 95px;
  height: auto;
}

.navbar__logo:hover { opacity: 1; }

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.navbar__links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
  position: relative;
}

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--duration-base) var(--ease-out);
}

.navbar__links a:hover,
.navbar__links a.is-active {
  color: var(--text-primary);
  opacity: 1;
}

.navbar__links a.is-active::after,
.navbar__links a:hover::after {
  width: 100%;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  background: var(--glass-bg);
  transition: border-color var(--duration-base) ease, color var(--duration-base) ease, background var(--duration-theme) ease;
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.dark-mode .theme-toggle__moon { display: none; }
.light-mode .theme-toggle__sun { display: none; }

/* Mobile Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 22px;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--duration-fast) ease, opacity var(--duration-fast) ease, background-color var(--duration-theme) ease;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 16px 38px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--duration-base) ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--accent);
  color: #EEEBE5;
  border-color: var(--accent);
}

.btn--primary:hover {
  box-shadow: var(--shadow-glow);
  opacity: 1;
}

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

.btn--ghost:hover {
  border-color: var(--text-secondary);
  opacity: 1;
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.8125rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  height: clamp(600px, 100vh, 920px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Collage */
.hero__collage {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__collage-img {
  position: absolute;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  border: 1px solid transparent;
}

body.dark-mode .hero__collage-img {
  border-color: rgba(238, 235, 229, 0.10);
}

body.light-mode .hero__collage-img {
  border-color: rgba(0, 0, 0, 0.08);
}

/* Dark mode opacities */
body.dark-mode .hero__collage-img--1 { opacity: 0.40; }
body.dark-mode .hero__collage-img--2 { opacity: 0.40; }
body.dark-mode .hero__collage-img--3 { opacity: 0.25; }
body.dark-mode .hero__collage-img--4 { opacity: 0.25; }
body.dark-mode .hero__collage-img--5 { opacity: 0.32; }
body.dark-mode .hero__collage-img--6 { opacity: 0.32; }
body.dark-mode .hero__collage-img--7 { opacity: 0.32; }

/* Light mode opacities */
body.light-mode .hero__collage-img--1 { opacity: 0.55; }
body.light-mode .hero__collage-img--2 { opacity: 0.55; }
body.light-mode .hero__collage-img--3 { opacity: 0.35; }
body.light-mode .hero__collage-img--4 { opacity: 0.35; }
body.light-mode .hero__collage-img--5 { opacity: 0.45; }
body.light-mode .hero__collage-img--6 { opacity: 0.45; }
body.light-mode .hero__collage-img--7 { opacity: 0.45; }

/* Image 1 — large, top-left */
.hero__collage-img--1 {
  width: 320px; height: 220px;
  top: 8%; left: 3%;
  transform: rotate(-3deg);
}

/* Image 2 — large, top-right */
.hero__collage-img--2 {
  width: 300px; height: 210px;
  top: 6%; right: 4%;
  transform: rotate(2.5deg);
}

/* Image 3 — smaller, mid-left */
.hero__collage-img--3 {
  width: 200px; height: 150px;
  top: 45%; left: 6%;
  transform: rotate(1.5deg);
}

/* Image 4 — smaller, mid-right */
.hero__collage-img--4 {
  width: 190px; height: 150px;
  top: 42%; right: 5%;
  transform: rotate(-2deg);
}

/* Image 5 — medium, bottom-left */
.hero__collage-img--5 {
  width: 260px; height: 180px;
  bottom: 6%; left: 5%;
  transform: rotate(2deg);
}

/* Image 6 — medium, bottom-center-right (Itra gift box) */
.hero__collage-img--6 {
  width: 240px; height: 160px;
  bottom: 5%; right: 22%;
  transform: rotate(-2deg);
}

/* Image 7 — medium, far bottom-right */
.hero__collage-img--7 {
  width: 250px; height: 175px;
  bottom: 3%; right: 2%;
  transform: rotate(-2.5deg);
}

/* Vignette */
.hero__vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

body.dark-mode .hero__vignette {
  background: radial-gradient(ellipse at center, rgba(19,18,16,0.6) 0%, rgba(19,18,16,0.42) 30%, rgba(19,18,16,0.68) 55%, #131210 95%);
}

body.light-mode .hero__vignette {
  background: radial-gradient(ellipse at center, rgba(242,237,228,0.55) 0%, rgba(242,237,228,0.38) 30%, rgba(242,237,228,0.65) 55%, #F2EDE4 95%);
}

/* Hero content */
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}

.hero__headline {
  margin-bottom: 0;
}

.hw-light {
  font-weight: 300;
}

.hw-bold {
  font-weight: 900;
}

.hero__dot {
  color: var(--accent);
}

.hero__underline {
  display: block;
  width: 80px;
  height: 3px;
  background: var(--accent);
  margin-top: var(--sp-3);
  margin-bottom: var(--sp-5);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 700ms var(--ease-out);
}

.hero__underline.is-expanded {
  transform: scaleX(1);
}

.hero__sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: var(--sp-5);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: var(--sp-2);
  justify-content: center;
}

/* ============================================
   GLASS CARDS
   ============================================ */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  transition: border-color var(--duration-base) ease, box-shadow var(--duration-base) ease, background var(--duration-theme) ease;
}

.glass-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-soft);
}

.glass-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--sp-1);
}

.glass-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.glass-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

/* ============================================
   PRINCIPLES BAND
   ============================================ */
.principles-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--accent);
  border-bottom: 1px solid var(--border-default);
  transition: border-color var(--duration-theme) ease;
}

.principles-band__item {
  padding: 24px 28px;
  border-right: 1px solid var(--border-default);
  transition: border-color var(--duration-theme) ease;
}

.principles-band__item:last-child {
  border-right: none;
}

.principles-band__item h3 {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.principles-band__item p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ============================================
   TIER CARDS (Services)
   ============================================ */
.tiers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.3fr;
  gap: var(--sp-3);
}

.tier-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform var(--duration-base) ease, box-shadow var(--duration-base) ease, background var(--duration-theme) ease, border-color var(--duration-theme) ease;
  will-change: transform;
}

.tier-card:hover {
  box-shadow: var(--shadow-medium);
}

.tier-card__watermark {
  position: absolute;
  top: -20px;
  right: -10px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 9rem;
  line-height: 1;
  color: var(--border-subtle);
  pointer-events: none;
  user-select: none;
  transition: color var(--duration-theme) ease;
}

.tier-card__glass-strip {
  height: 4px;
  background: var(--color-accent);
}

.tier-card__body {
  position: relative;
  z-index: 2;
  padding: var(--sp-5);
}

.tier-card__label {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--sp-2);
}

.tier-card__name {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--sp-2);
}

.tier-card__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: var(--sp-3);
  line-height: 1.65;
}

.tier-card__includes-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: var(--sp-1);
}

.tier-card__list {
  margin-bottom: var(--sp-3);
}

.tier-card__list li {
  font-size: 0.9375rem;
  padding: 6px 0;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.tier-card__list li:last-child { border-bottom: none; }

.tier-card__timeline {
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: var(--sp-1);
}

.tier-card__excludes {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-bottom: var(--sp-4);
}

/* Featured tier card (Pack 3) */
.tier-card--featured {
  border-color: rgba(150, 27, 43, 0.25);
}

.tier-card--featured .tier-card__glass-strip {
  height: 5px;
}

.tier-card__featured-tag {
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-2);
  z-index: 3;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #EEEBE5;
  background: var(--accent);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* Landscape tier card (Custom Projects) */
.tier-card--landscape-wrap {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
}

.tier-card--landscape {
  position: relative;
  width: 66%;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: box-shadow var(--duration-base) ease, background var(--duration-theme) ease, border-color var(--duration-theme) ease;
}

.tier-card--landscape:hover {
  box-shadow: var(--shadow-medium);
}

.tier-card--landscape__body {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
}

.tier-card--landscape .landscape__label {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  margin-bottom: var(--sp-1);
}

.tier-card--landscape .landscape__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.375rem;
  color: var(--text-primary);
  margin-bottom: var(--sp-1);
  line-height: 1.2;
  transition: color var(--duration-theme) ease;
}

.tier-card--landscape .landscape__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0;
  max-width: none;
}

.tier-card--landscape .landscape__cta {
  flex-shrink: 0;
}

/* ============================================
   PORTFOLIO CARDS
   ============================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

.portfolio-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform var(--duration-base) ease, box-shadow var(--duration-base) ease, background var(--duration-theme) ease, border-color var(--duration-theme) ease;
  will-change: transform;
  text-decoration: none;
  color: inherit;
  display: block;
}

.portfolio-card:hover {
  box-shadow: var(--shadow-medium);
  opacity: 1;
}

.portfolio-card__preview {
  aspect-ratio: 16 / 10;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  transition: background var(--duration-theme) ease;
}

.portfolio-card__preview-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-tertiary);
  text-align: center;
  padding: var(--sp-3);
  line-height: 1.3;
}

.portfolio-card__preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-card__body {
  padding: var(--sp-3);
}

.portfolio-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin-bottom: var(--sp-1);
}

.portfolio-card__category {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.portfolio-card__year {
  font-size: 0.6875rem;
  color: var(--text-tertiary);
}

.portfolio-card__name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
  margin-bottom: var(--sp-2);
  line-height: 1.3;
}

.portfolio-card__cta {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.portfolio-card__cta svg {
  transition: transform var(--duration-fast) ease;
}

.portfolio-card:hover .portfolio-card__cta svg {
  transform: translateX(3px);
}

/* ============================================
   PROCESS GRID
   ============================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
}

.process-step {
  padding-top: var(--sp-3);
  border-top: 1px solid var(--border-default);
  transition: border-color var(--duration-theme) ease;
}

.process-step__number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(3rem, 6vw, 5rem);
  color: var(--text-primary);
  opacity: 0.08;
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.process-step h3 {
  margin-bottom: var(--sp-1);
}

.process-step p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ============================================
   METHODOLOGY (Services Process)
   ============================================ */
.methodology-list {
  max-width: 760px;
}

.methodology-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--sp-3);
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--border-default);
  transition: border-color var(--duration-theme) ease;
}

.methodology-step:first-child {
  border-top: 1px solid var(--border-default);
}

.methodology-step__number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2.5rem;
  color: var(--accent);
  line-height: 1;
}

.methodology-step h3 {
  margin-bottom: var(--sp-1);
}

.methodology-step p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ============================================
   FAQ (Accordion)
   ============================================ */
.faq-list {
  max-width: 720px;
}

.faq-item {
  border-bottom: 1px solid var(--border-default);
  transition: border-color var(--duration-theme) ease;
}

.faq-item:first-child {
  border-top: 1px solid var(--border-default);
}

.faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--sp-3) 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: color var(--duration-fast) ease;
}

.faq-item__q:hover {
  color: var(--accent);
}

.faq-item__icon {
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text-tertiary);
  transition: transform var(--duration-slow) var(--ease-out);
  flex-shrink: 0;
  margin-left: var(--sp-2);
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out), padding var(--duration-slow) var(--ease-out);
  padding-bottom: 0;
}

.faq-item.is-open .faq-item__a {
  max-height: 200px;
  padding-bottom: var(--sp-3);
}

.faq-item__a p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  text-align: center;
  padding: var(--sp-16) 0;
}

.cta-section h2 {
  font-weight: 800;
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  margin-bottom: var(--sp-4);
}

/* CTA: inverted in light mode */
body.light-mode .cta-section {
  background-color: var(--color-ink, #1C1A15);
}

body.light-mode .cta-section,
body.light-mode .cta-section h2 {
  color: var(--color-bg, #F2EDE4);
}

body.light-mode .cta-section .btn--primary {
  background: var(--color-accent, var(--accent));
  color: var(--color-bg, #F2EDE4);
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-intro-section {
  position: relative;
  overflow: hidden;
}

.about-watermark {
  position: absolute;
  top: 140px;
  right: 0;
  width: 200px;
  height: auto;
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
  transition: opacity var(--duration-theme) ease;
}

body.dark-mode .about-watermark--light { display: none; }
body.dark-mode .about-watermark--dark { display: block; }
body.light-mode .about-watermark--dark { display: none; }
body.light-mode .about-watermark--light { display: block; }

body.dark-mode .navbar__logo-light { display: none; }
body.dark-mode .navbar__logo-dark { display: block; }
body.light-mode .navbar__logo-dark { display: none; }
body.light-mode .navbar__logo-light { display: block; }

body.dark-mode .footer__logo-light { display: none; }
body.dark-mode .footer__logo-dark { display: block; }
body.light-mode .footer__logo-dark { display: none; }
body.light-mode .footer__logo-light { display: block; }

.about-intro p {
  font-size: 1.125rem;
  line-height: 1.7;
}

.about-pullquote {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-primary);
  border-left: 3px solid var(--accent);
  padding-left: var(--sp-3);
  margin: var(--sp-5) 0;
  max-width: 600px;
  transition: color var(--duration-theme) ease, border-color var(--duration-theme) ease;
}

.about-model p {
  max-width: 720px;
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
}

.fit-col--good {
  border-top: 2px solid var(--accent);
  padding-top: var(--sp-2);
}

.fit-col--not {
  border-top: 2px solid var(--border-default);
  padding-top: var(--sp-2);
}

.fit-col__heading--muted {
  color: var(--text-tertiary);
}

.fit-list li {
  font-size: 1rem;
  padding: var(--sp-2) 0;
  border-bottom: 1px solid var(--border-default);
  color: var(--text-secondary);
  transition: border-color var(--duration-theme) ease;
}

.fit-list li:first-child {
  border-top: 1px solid var(--border-default);
}

.fit-note {
  margin-top: var(--sp-5);
  max-width: 720px;
  font-size: 0.9375rem;
  color: var(--text-tertiary);
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-form {
  max-width: 640px;
}

.form-group {
  margin-bottom: var(--sp-3);
}

.form-group label {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: var(--sp-1);
  color: var(--text-primary);
  transition: color var(--duration-theme) ease;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  padding: 14px var(--sp-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: border-color var(--duration-fast) ease, background var(--duration-theme) ease, color var(--duration-theme) ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  cursor: pointer;
  padding-right: var(--sp-5);
}

.dark-mode .form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23ACA89F' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.light-mode .form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231C1A15' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.contact-note {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--sp-4);
  max-width: 640px;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  border-top: 1px solid var(--border-default);
  padding: var(--sp-6) 0;
  margin-top: var(--sp-8);
  transition: border-color var(--duration-theme) ease;
}

.footer__grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--sp-3);
}

.footer__logo-img {
  width: 48px;
  height: auto;
}

.footer__center {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-bottom: 0;
}

.footer__legal {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 0.8125rem;
}

.footer__legal a {
  color: var(--text-tertiary);
  transition: color var(--duration-fast) ease;
}

.footer__legal a:hover {
  color: var(--accent);
  opacity: 1;
}

.footer__legal span {
  color: var(--text-tertiary);
}

/* ============================================
   CASE STUDY PAGE
   ============================================ */
.case-study-breadcrumb {
  padding-top: calc(var(--nav-height) + var(--sp-8));
  padding-bottom: var(--sp-2);
}

.case-study-breadcrumb nav {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.case-study-breadcrumb a {
  color: var(--text-secondary);
  font-weight: 500;
}

.case-study-breadcrumb a:hover {
  color: var(--accent);
  opacity: 1;
}

.case-study-hero {
  padding: var(--sp-6) 0 var(--sp-10);
}

.case-study-hero__title {
  font-weight: 900;
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-2);
}

.case-study-hero__subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: var(--line-max);
  margin-bottom: var(--sp-5);
  line-height: 1.6;
}

.case-study-meta {
  display: flex;
  gap: var(--sp-5);
  margin-bottom: var(--sp-5);
  padding: var(--sp-3) 0;
  border-top: 1px solid var(--border-default);
  border-bottom: 1px solid var(--border-default);
  transition: border-color var(--duration-theme) ease;
}

.case-study-meta__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case-study-meta__label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
}

.case-study-meta__value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--duration-theme) ease;
}

.case-study-hero__positioning {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 760px;
  line-height: 1.7;
}

/* Case study sections */
.case-study-section {
  padding: var(--sp-10) 0;
}

.case-study-section--surface {
  background-color: var(--bg-surface);
  transition: background-color var(--duration-theme) ease;
}

.case-study-section .container {
  max-width: 1000px;
}

.case-study-section__label {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.75rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.case-study-section__title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: var(--sp-5);
}

.case-study-section__body {
  max-width: 760px;
}

.case-study-section__body h3 {
  font-size: 1.0625rem;
  margin-top: var(--sp-5);
  margin-bottom: var(--sp-1);
}

.case-study-section__body h3:first-child {
  margin-top: 0;
}

.case-study-section__body p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* Image-dominant layout */
.cs-img {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--sp-5) 0;
}

.cs-img img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.cs-img--full {
  margin-left: calc(-1 * var(--sp-3));
  margin-right: calc(-1 * var(--sp-3));
  width: calc(100% + var(--sp-3) * 2);
  border-radius: 0;
}

.cs-img--full img {
  border-radius: 0;
  aspect-ratio: 16 / 10;
}

.cs-img__caption {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: var(--sp-1);
  text-align: center;
}

/* Text + image split layout */
.cs-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-5);
  align-items: center;
  margin: var(--sp-6) 0;
}

.cs-split--reverse {
  direction: rtl;
}

.cs-split--reverse > * {
  direction: ltr;
}

.cs-split__text h3 {
  font-size: 1.0625rem;
  margin-bottom: var(--sp-1);
}

.cs-split__text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.cs-split__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* ============================================
   HOMEPAGE SPACING OVERRIDES
   ============================================ */
.hero + .section {
  padding-top: var(--sp-12);
}

.section:has(.process-grid) {
  padding-bottom: 90px;
}

.cta-section {
  padding: 192px 0;
}

@media (max-width: 720px) {
  .cs-split,
  .cs-split--reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .cs-img--full {
    margin-left: calc(-1 * var(--sp-2));
    margin-right: calc(-1 * var(--sp-2));
    width: calc(100% + var(--sp-2) * 2);
  }
}

/* Hero image */
.case-study-hero__image {
  margin-top: var(--sp-6);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.case-study-hero__image img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* Outcomes grid */
.case-study-outcomes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.case-study-outcome {
  padding: var(--sp-3);
  border-top: 2px solid var(--accent);
}

.case-study-outcome h3 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: var(--sp-1);
}

.case-study-outcome p {
  font-size: 0.875rem;
}

/* Case study bottom nav */
.case-study-nav {
  padding: var(--sp-6) 0;
}

/* Responsive */
@media (max-width: 720px) {
  .case-study-meta {
    flex-direction: column;
    gap: var(--sp-2);
  }

  .case-study-outcomes {
    grid-template-columns: 1fr;
  }

  .case-study-hero__title {
    font-size: 2rem;
  }
}

/* ============================================
   REVEAL ANIMATION
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-reveal) var(--ease-out), transform var(--duration-reveal) var(--ease-out);
}

.reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 960px) {
  .glass-grid,
  .tiers-grid,
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .principles-band {
    grid-template-columns: 1fr;
    border-bottom: none;
  }

  .principles-band__item {
    border-right: none;
    border-bottom: 1px solid var(--border-default);
  }

  .tier-card--landscape {
    width: 85%;
  }
}

@media (max-width: 720px) {
  .container { padding: 0 var(--sp-2); }

  .section { padding: var(--sp-10) 0; }

  /* Homepage spacing overrides — mobile */
  .hero + .section { padding-top: var(--sp-8); }
  .section:has(.process-grid) { padding-bottom: var(--sp-8); }
  .cta-section { padding: var(--sp-12) 0; }

  .hero {
    height: auto;
    min-height: auto;
    padding: var(--sp-16) 0 var(--sp-10);
  }

  .hero__collage { display: none; }
  .hero__vignette { display: none; }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn { text-align: center; }

  .glass-grid,
  .tiers-grid,
  .portfolio-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .principles-band {
    grid-template-columns: 1fr;
    border-bottom: none;
  }

  .principles-band__item {
    border-right: none;
    border-bottom: 1px solid var(--border-default);
  }

  .tier-card--landscape {
    width: 100%;
  }

  .tier-card--landscape__body {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
  }

  .fit-grid {
    grid-template-columns: 1fr;
  }

  /* Navbar mobile */
  .nav-toggle { display: flex; }

  .navbar__links {
    display: none;
    position: absolute;
    top: calc(100% + var(--sp-1));
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--sp-3);
    gap: var(--sp-2);
    box-shadow: var(--shadow-soft);
  }

  .navbar__links.is-open { display: flex; }

  .navbar__links a::after { display: none; }

  .methodology-step {
    grid-template-columns: 60px 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-2);
  }

  .footer__center {
    align-items: center;
  }

  .footer__legal {
    justify-content: center;
  }

  .footer__logo-img {
    margin: 0 auto;
  }

  .navbar {
    top: var(--sp-1);
    width: calc(100% - var(--sp-4));
    border-radius: var(--radius-md);
  }
}

/* ============================================
   FORM STATES
   ============================================ */
.contact-form .btn--primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-message {
  max-width: 640px;
  padding: var(--sp-5);
  border-radius: var(--radius-md);
  text-align: center;
}

.form-message h3 {
  margin-bottom: var(--sp-1);
}

.form-message p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.form-message--success {
  border: 1px solid var(--accent);
  background: var(--glass-bg);
}

.form-message--error {
  border: 1px solid #c0392b;
  background: rgba(192, 57, 43, 0.08);
}

/* ============================================
   CONTACT — WHAT TO EXPECT
   ============================================ */
.contact-steps {
  max-width: 640px;
  margin-top: var(--sp-8);
}

.contact-steps__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: var(--sp-3);
}

.contact-steps__list {
  list-style: none;
  counter-reset: steps;
}

.contact-steps__list li {
  counter-increment: steps;
  padding: var(--sp-2) 0;
  border-bottom: 1px solid var(--border-default);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  display: flex;
  gap: var(--sp-2);
  align-items: baseline;
  transition: border-color var(--duration-theme) ease;
}

.contact-steps__list li::before {
  content: counter(steps);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--accent);
  min-width: 20px;
}

.contact-steps__list li:first-child {
  border-top: 1px solid var(--border-default);
}

/* Optional field label hint */
.form-group__optional {
  font-weight: 400;
  color: var(--text-tertiary);
  font-size: 0.8125rem;
}

/* ============================================
   SKIP TO CONTENT
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 12px 24px;
  background: var(--accent);
  color: #EEEBE5;
  z-index: 10001;
  font-size: 0.875rem;
  font-family: var(--font-body);
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  top: 0;
  opacity: 1;
}

/* ============================================
   FOCUS VISIBLE
   ============================================ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible {
  outline: none;
  border-color: var(--accent);
}

/* ============================================
   FOOTER EMAIL
   ============================================ */
.footer__email {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  transition: color var(--duration-fast) ease;
}

.footer__email:hover {
  color: var(--accent);
  opacity: 1;
}


/* ============================================
   PRIVACY POLICY PAGE
   ============================================ */

.privacy {
  padding-top: 160px;
  padding-bottom: var(--sp-16);
}

.privacy__header {
  margin-bottom: var(--sp-8);
}

.privacy__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
}

.privacy__date {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.privacy__section {
  margin-bottom: var(--sp-8);
}

.privacy__section h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
}

.privacy__section p {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: var(--line-max);
  margin-bottom: var(--sp-2);
}

.privacy__section p:last-child {
  margin-bottom: 0;
}

.privacy__section ul {
  list-style: disc;
  padding-left: var(--sp-3);
  margin-bottom: var(--sp-2);
}

.privacy__section ul li {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: var(--line-max);
  margin-bottom: var(--sp-1);
}

.privacy__section a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--duration-fast) ease;
}

.privacy__section a:hover {
  opacity: 0.8;
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__underline {
    transform: scaleX(1);
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}