/* =========================================================
   ISKO Studio — stylesheet
   Minimal, monochrome, confident. See CLAUDE.md.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --bg:          #FAFAF8;
  --surface:     #FFFFFF;
  --text:        #1A1A1A;
  --text-muted:  #6B6B6B;
  --hairline:    #E5E4DF;
  --accent:      #B8884D;
  --accent-hover:#9A7240;
  --dark-bg:     #1A1A1A;
  --dark-text:   #FAFAF8;

  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans:  "Plus Jakarta Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  --maxw: 1100px;
  --radius: 5px;

  /* spacing scale: 8 16 24 40 64 96 128 */
  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 40px;
  --s-5: 64px;
  --s-6: 96px;
  --s-7: 128px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px; /* offset for sticky header */
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

.section {
  padding-block: clamp(64px, 12vw, 128px);
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(40px, 6vw, 64px);
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--s-2);
}

.section-title {
  font-size: clamp(1.9rem, 4.2vw, 2.25rem);
}

.section-lead {
  margin-top: var(--s-3);
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 40rem;
}

/* ---------- Skip link / a11y ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--text);
  color: var(--dark-text);
  padding: var(--s-1) var(--s-2);
  border-radius: var(--radius);
  z-index: 200;
}
.skip-link:focus { left: var(--s-2); top: var(--s-2); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-1);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1;
  padding: 0.85em 1.4em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s var(--ease),
              color 0.18s var(--ease),
              border-color 0.18s var(--ease),
              transform 0.18s var(--ease);
}

.btn-primary {
  background: var(--text);
  color: var(--dark-text);
}
.btn-primary:hover { background: #000; transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--hairline);
}
.btn-ghost:hover { border-color: var(--text); transform: translateY(-1px); }

.btn-block { width: 100%; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background-color 0.25s var(--ease),
              border-color 0.25s var(--ease),
              box-shadow 0.25s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(250, 250, 248, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom-color: var(--hairline);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.wordmark {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--text);
}
.wordmark-dot { color: var(--accent); }
.wordmark-light { color: var(--dark-text); }

.primary-nav .nav-list {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  list-style: none;
  padding: 0;
}
.primary-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.15s var(--ease);
}
.primary-nav a:hover { color: var(--accent); }

.nav-cta {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 0.5em 1em;
}
.nav-cta:hover { border-color: var(--text); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  border-top: 1px solid var(--hairline);
  background: var(--bg);
}
.mobile-nav ul { list-style: none; padding: var(--s-2) 0; margin: 0; }
.mobile-nav a {
  display: block;
  padding: var(--s-2) clamp(20px, 5vw, 40px);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
}
.mobile-nav a:hover { color: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(72px, 16vw, 160px) clamp(48px, 9vw, 96px);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(26, 26, 26, 0.035) 0 1px,
    transparent 1px 22px
  );
}
.hero-inner { max-width: 56rem; }
.hero-title {
  font-size: clamp(2.6rem, 8vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
}
.hero-sub {
  margin-top: var(--s-3);
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  color: var(--text-muted);
  max-width: 38rem;
  line-height: 1.55;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-4);
}

/* ---------- Work ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(24px, 4vw, 40px);
}
/* first card spans full width for an asymmetric feel */
.work-card:first-child { grid-column: 1 / -1; }

.work-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}
.work-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px -22px rgba(26, 26, 26, 0.35);
  border-color: var(--text);
}

.work-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.4s var(--ease);
}
.work-card:hover .work-thumb img { transform: scale(1.03); }
.work-card:first-child .work-thumb { aspect-ratio: 21 / 9; }

.work-placeholder {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  background:
    repeating-linear-gradient(135deg, #e9e7df 0 1px, transparent 1px 20px),
    #e7e5dc;
  color: #8a8576;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  letter-spacing: -0.01em;
  text-align: center;
  padding: var(--s-2);
}
.work-placeholder.is-ghost {
  background:
    repeating-linear-gradient(135deg, #efede6 0 1px, transparent 1px 20px),
    #eeece5;
  color: #adaa9d;
}
.work-placeholder.tba-logo {
  background: #2C2623;
}

.work-cue {
  position: absolute;
  left: var(--s-2);
  bottom: var(--s-2);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  background: var(--text);
  color: var(--dark-text);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.4em 0.7em;
  border-radius: var(--radius);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}
.work-card:hover .work-cue,
.work-card:focus-visible .work-cue { opacity: 1; transform: translateY(0); }
.is-soon .work-cue { opacity: 1; transform: none; background: var(--accent); }

.work-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--s-2);
  padding: var(--s-3);
}
.work-name { font-size: 1.25rem; }
.work-desc { margin-top: 6px; color: var(--text-muted); font-size: 0.95rem; }

.tag {
  flex: none;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--hairline);
  border-radius: 100px;
  padding: 0.3em 0.7em;
  white-space: nowrap;
}

/* ---------- Services ---------- */
.services-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
}
.service {
  background: var(--bg);
  padding: clamp(28px, 4vw, 40px);
}
.service-icon {
  display: inline-flex;
  font-size: 1.25rem;
  color: var(--accent);
  margin-bottom: var(--s-2);
}
.service-title { font-size: 1.3rem; margin-bottom: var(--s-1); }
.service-desc { color: var(--text-muted); font-size: 0.98rem; }

/* ---------- Pricing ---------- */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-3);
  align-items: stretch;
}
.tier {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: clamp(24px, 3.5vw, 36px);
}
.tier.is-recommended {
  border-color: var(--text);
  box-shadow: 0 18px 50px -30px rgba(26, 26, 26, 0.45);
}
.tier-flag {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s-2);
}
.tier-name { font-size: 1.5rem; }
.tier-price {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: var(--s-1);
}
.tier-from {
  display: inline;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0;
  margin-right: 4px;
}
.tier-care {
  margin-top: 4px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.01em;
}
.tier-blurb { margin-top: var(--s-2); color: var(--text-muted); font-size: 0.95rem; }
.tier-features {
  list-style: none;
  padding: 0;
  margin: var(--s-3) 0 var(--s-4);
  display: grid;
  gap: var(--s-1);
}
.tier-features li {
  position: relative;
  padding-left: 1.5em;
  font-size: 0.95rem;
}
.tier-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}
.tier .btn { margin-top: auto; }

.care-line {
  margin-top: var(--s-4);
  text-align: center;
  font-size: 1.05rem;
  color: var(--text);
}
.care-line strong { font-weight: 600; }
.care-line a { color: var(--accent); text-decoration: none; }
.care-line a:hover { text-decoration: underline; }

/* ---------- About ---------- */
.about-inner {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}
.about-photo {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  width: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.about-copy p { margin-top: var(--s-3); color: var(--text-muted); }
.about-copy .eyebrow { color: var(--text-muted); }
.about-copy .section-title { margin-top: var(--s-1); }
.about-copy .btn { margin-top: var(--s-4); }

/* ---------- Process ---------- */
.process-steps {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 32px);
  counter-reset: step;
}
.step { border-top: 2px solid var(--text); padding-top: var(--s-2); }
.step-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: var(--s-1);
}
.step-title { font-size: 1.25rem; }
.step-desc { margin-top: 6px; color: var(--text-muted); font-size: 0.95rem; }

/* ---------- Contact ---------- */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
.contact-email { margin-top: var(--s-3); color: var(--text-muted); }
.contact-email a { color: var(--accent); text-decoration: none; }
.contact-email a:hover { text-decoration: underline; }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 40px);
}
.field { margin-bottom: var(--s-3); }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--s-1);
}
.field input,
.field textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 0.75em 0.85em;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(184, 136, 77, 0.15);
}
.field textarea { resize: vertical; }
.form-note {
  margin-top: var(--s-2);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}
.field-optional {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
}
.form-success, .form-error {
  margin-top: var(--s-2);
  padding: var(--s-2) var(--s-3);
  border-radius: var(--radius);
  font-size: 0.95rem;
  text-align: center;
}
.form-success { background: #f0faf4; color: #1a6b3a; border: 1px solid #b8e6cc; }
.form-error   { background: #fdf2f2; color: #8b1a1a; border: 1px solid #f0b8b8; }
.form-error a { color: inherit; font-weight: 600; }
.btn:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }

/* ---------- Multi-step form ---------- */
.form-progress {
  height: 4px;
  background: var(--hairline);
  border-radius: 999px;
  overflow: hidden;
}
.form-progress-bar {
  height: 100%;
  width: 25%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.3s var(--ease);
}
.form-step-count {
  margin-top: var(--s-1);
  margin-bottom: var(--s-3);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.form-step {
  border: 0;
  padding: 0;
  margin: 0;
  min-inline-size: 0;
}
.form-step:not(.is-active) { display: none; }
.form-step-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--s-3);
  padding: 0;
}
.form-step-hint {
  margin-top: calc(-1 * var(--s-2));
  margin-bottom: var(--s-3);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
}
.choice-grid { display: grid; gap: var(--s-2); }
.choice {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.7em;
  padding: 0.85em 1em;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}
.choice:hover { border-color: var(--text-muted); }
.choice input { accent-color: var(--accent); width: 1.1em; height: 1.1em; flex-shrink: 0; }
.choice-label { font-size: 0.98rem; color: var(--text); }
.choice:has(input:checked) {
  border-color: var(--accent);
  background: rgba(184, 136, 77, 0.07);
}
.choice:has(input:focus-visible) {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.form-nav {
  display: flex;
  gap: var(--s-2);
  margin-top: var(--s-4);
}
.form-nav .btn { flex: 1; }
/* hidden attribute must always win over flex/inline-flex display */
[hidden] { display: none !important; }
@media (max-width: 480px) {
  .field-row { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--dark-bg);
  color: var(--dark-text);
  padding-block: clamp(48px, 7vw, 80px) var(--s-4);
  margin-top: var(--s-4);
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--s-4);
  padding-bottom: var(--s-5);
  border-bottom: 1px solid rgba(250, 250, 248, 0.12);
}
.footer-tag {
  margin-top: var(--s-2);
  color: rgba(250, 250, 248, 0.6);
  font-size: 0.95rem;
  max-width: 22rem;
}
.footer-nav ul { list-style: none; padding: 0; display: grid; gap: var(--s-1); }
.footer-nav a, .footer-contact a {
  color: rgba(250, 250, 248, 0.75);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.15s var(--ease);
}
.footer-nav a:hover, .footer-contact a:hover { color: var(--accent); }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-2);
  padding-top: var(--s-3);
  font-size: 0.85rem;
  color: rgba(250, 250, 248, 0.55);
}
.footer-base a { color: rgba(250, 250, 248, 0.75); text-decoration: none; }
.footer-base a:hover { color: var(--accent); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .primary-nav { display: none; }
  .nav-toggle { display: flex; }

  .about-inner,
  .contact-inner { grid-template-columns: 1fr; }
  .about-media { max-width: 320px; }

  .tier-grid { grid-template-columns: 1fr; max-width: 28rem; margin-inline: auto; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .work-grid { grid-template-columns: 1fr; }
  .work-card:first-child .work-thumb { aspect-ratio: 16 / 10; }
  .services-list { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .hero-actions .btn { flex: 1 1 auto; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}