/* --------------------------------------------------------------------------
   Minimal portfolio — Apple-adjacent: space, type, restraint
   Font: DM Sans (Product Sans–like geometric sans)
   -------------------------------------------------------------------------- */

:root {
  --bg: #fbfbfb;
  --bg-elevated: #ffffff;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.12);
  --accent: #1d1d1f;
  --radius: 12px;
  --radius-sm: 8px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --max-width: 1120px;
  --header-h: 52px;
  --font: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: 0.22s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  opacity: 0.7;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 0.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 251, 251, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 500;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.nav__list {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-lg);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.nav__list a {
  color: var(--text-secondary);
}

.nav__list a:hover {
  color: var(--text);
  opacity: 1;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  margin: 0 -10px 0 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.mobile-nav {
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav:not([hidden]) {
  display: block;
}

.mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: var(--space-sm) var(--space-md) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  font-size: 1.0625rem;
  font-weight: 400;
}

.mobile-nav__list a {
  display: block;
  padding: var(--space-xs) 0;
  color: var(--text);
}

/* Hero */
.hero {
  padding: var(--space-2xl) var(--space-md) var(--space-xl);
}

.hero__content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero__eyebrow {
  margin: 0 0 var(--space-sm);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.hero__title {
  margin: 0 0 var(--space-md);
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.07;
}

.hero__lead {
  margin: 0;
  max-width: 28rem;
  font-size: 1.125rem;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Section shared */
.section-head {
  max-width: var(--max-width);
  margin: 0 auto var(--space-lg);
  padding: 0 var(--space-md);
}

.section-head__title {
  margin: 0 0 var(--space-xs);
  font-size: clamp(1.75rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.section-head__subtitle {
  margin: 0;
  font-size: 1rem;
  font-weight: 300;
  color: var(--text-secondary);
}

/* Gallery */
.gallery {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.gallery__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.gallery__link {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  outline-offset: 2px;
}

.gallery__link:focus-visible {
  outline: 2px solid var(--text);
}

.gallery__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(145deg, #e8e8ed 0%, #d2d2d7 100%);
  transition: transform var(--transition);
}

.gallery__link:hover .gallery__media {
  transform: scale(1.01);
}

.gallery__media--1 {
  background: linear-gradient(160deg, #e4e4e8 0%, #c7c7cc 100%);
}

.gallery__media--2 {
  background: linear-gradient(145deg, #d1d1d6 0%, #aeaeb2 100%);
}

.gallery__media--3 {
  background: linear-gradient(155deg, #f5f5f7 0%, #d8d8dc 100%);
}

.gallery__media--4 {
  background: linear-gradient(135deg, #c4c4c8 0%, #8e8e93 100%);
}

.gallery__media--5 {
  background: linear-gradient(180deg, #1d1d1f 0%, #424245 100%);
}

.gallery__media--6 {
  background: linear-gradient(145deg, #ececf0 0%, #b8b8bd 100%);
}

.gallery__label {
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-md);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #1d1d1f;
}

.gallery__media--5 .gallery__label {
  color: #f5f5f7;
}

/* Services */
.services {
  padding: var(--space-xl) 0 var(--space-2xl);
  border-top: 1px solid var(--border);
}

.services__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.service-card {
  padding: var(--space-lg) var(--space-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.service-card__title {
  margin: 0 0 var(--space-sm);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.service-card__text {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Contact */
.contact {
  padding: var(--space-xl) 0 var(--space-2xl);
  border-top: 1px solid var(--border);
}

.contact__layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  gap: var(--space-lg);
}

.contact__title {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.75rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.contact__lead {
  margin: 0;
  font-size: 1rem;
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 22rem;
  line-height: 1.55;
}

.contact-form {
  max-width: 28rem;
}

.field {
  margin-bottom: var(--space-md);
}

.field__label {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
}

.field__input {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 300;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field__input:hover {
  border-color: rgba(0, 0, 0, 0.2);
}

.field__input:focus {
  outline: none;
  border-color: var(--text);
  box-shadow: 0 0 0 3px rgba(29, 29, 31, 0.12);
}

.field__input--area {
  resize: vertical;
  min-height: 120px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #f5f5f7;
  background: var(--accent);
  border: none;
  border-radius: 980px;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.btn:hover {
  opacity: 0.88;
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.site-footer__copy {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--text-secondary);
}

.site-footer__top {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* Tablet+ */
@media (min-width: 640px) {
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery__item--wide {
    grid-column: span 2;
  }

  .gallery__item--wide .gallery__media {
    aspect-ratio: 21 / 9;
  }

  .services__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
  }

  .service-card {
    padding: var(--space-md);
  }

  .contact__layout {
    grid-template-columns: 1fr 1.1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .nav__list {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }

  .gallery__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .gallery__item--wide {
    grid-column: span 3;
  }

  .gallery__item--wide .gallery__media {
    aspect-ratio: 21 / 8;
  }
}