/* ═══════════════════════════════════════════════════════════
   KB x Atelier — Main CSS
   Design tokens, reset, typography, layout utilities
═══════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─────────────────────────────────────── */
:root {
  --c-olive:  #6B705C;
  --c-sand:   #DDBEA9;
  --c-cream:  #F8F4EF;
  --c-brown:  #7F5539;
  --c-dark:   #2a2a2a;
  --c-mid:    #666666;
  --c-light:  #e8e0d8;

  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans:  system-ui, -apple-system, sans-serif;

  --spacing-xs:  4px;
  --spacing-sm:  8px;
  --spacing-md:  16px;
  --spacing-lg:  32px;
  --spacing-xl:  64px;

  --radius-sm:  3px;
  --radius-md:  6px;

  --transition-fast:   0.2s ease;
  --transition-medium: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --max-width: 1320px;
  --nav-height: 100px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  background-color: var(--c-cream);
  color: var(--c-dark);
  font-family: var(--font-serif);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

/* ─── Typography ────────────────────────────────────────── */
.t-brand {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 200;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-dark);
}

.t-subtitle {
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-sand);
}

.t-label {
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-olive);
}

.t-section-title {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 200;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-dark);
}

.t-body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-mid);
}

/* ─── Navigation ────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 244, 239, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-light);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
}

.nav__lang {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.nav__lang-btn {
  background: none;
  border: none;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-sand);
  padding: 2px 4px;
  transition: color var(--transition-fast);
}

.nav__lang-btn:hover,
.nav__lang-btn.active {
  color: var(--c-brown);
}

.nav__logo {
  display: block;
  margin: 0 auto var(--spacing-xs);
  user-select: none;
  cursor: pointer;
}

.nav__links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  list-style: none;
  padding-bottom: var(--spacing-sm);
}

.nav__links a {
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-olive);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--c-brown);
  border-bottom-color: var(--c-sand);
}

/* ─── Admin login modal ─────────────────────────────────── */
.admin-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(42, 42, 42, 0.7);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.admin-modal.open {
  display: flex;
}

.admin-modal__box {
  background: var(--c-cream);
  padding: var(--spacing-xl) var(--spacing-lg);
  width: min(360px, 90vw);
  border: 1px solid var(--c-light);
}

.admin-modal__title {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-olive);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.admin-modal__field {
  margin-bottom: var(--spacing-md);
}

.admin-modal__label {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-mid);
  margin-bottom: var(--spacing-xs);
}

.admin-modal__input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--c-light);
  background: white;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--c-dark);
  outline: none;
  transition: border-color var(--transition-fast);
}

.admin-modal__input:focus {
  border-color: var(--c-olive);
}

.admin-modal__btn {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--c-olive);
  color: white;
  border: none;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: var(--spacing-md);
  transition: background var(--transition-fast);
}

.admin-modal__btn:hover {
  background: var(--c-brown);
}

.admin-modal__error {
  font-size: 0.75rem;
  color: #c0392b;
  margin-top: var(--spacing-sm);
  text-align: center;
  min-height: 1.2em;
}

.admin-modal__close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--c-mid);
  cursor: pointer;
}

/* ─── Layout ────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.divider {
  width: 40px;
  height: 1px;
  background: var(--c-sand);
  margin: var(--spacing-md) auto;
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid currentColor;
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn--olive {
  color: var(--c-olive);
  border-color: var(--c-olive);
}

.btn--olive:hover {
  background: var(--c-olive);
  color: white;
}

.btn--brown {
  background: var(--c-brown);
  color: white;
  border-color: var(--c-brown);
}

.btn--brown:hover {
  background: var(--c-dark);
  border-color: var(--c-dark);
}

/* ─── Footer ────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--c-light);
  padding: var(--spacing-lg);
  text-align: center;
}

.footer__text {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-sand);
}

/* ─── Hamburger (mobile) ────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--c-olive);
  transition: all 0.3s;
}

/* ─── Mobile drawer ─────────────────────────────────────── */
.nav__drawer {
  display: none;
  position: fixed;
  top: 0; right: 0;
  width: 260px;
  height: 100%;
  background: var(--c-olive);
  z-index: 200;
  padding: 60px 30px 30px;
  flex-direction: column;
  gap: var(--spacing-md);
  transform: translateX(100%);
  transition: transform var(--transition-medium);
}

.nav__drawer.open {
  transform: translateX(0);
}

.nav__drawer a {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid rgba(221,190,169,0.2);
  transition: color var(--transition-fast);
}

.nav__drawer a:hover {
  color: var(--c-sand);
}

.nav__drawer-close {
  position: absolute;
  top: 16px; right: 20px;
  background: none;
  border: none;
  font-size: 1.2rem;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
}

.nav__drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 190;
}

.nav__drawer-overlay.open {
  display: block;
}

/* ─── Scroll reveal ─────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.reveal.revealed {
  opacity: 1;
  transform: none;
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 20px;
    --spacing-xl: 40px;
  }

  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
    position: absolute;
    top: 50%;
    right: var(--spacing-lg);
    transform: translateY(-50%);
  }

  .nav__drawer {
    display: flex;
  }

  .container {
    padding: 0 var(--spacing-md);
  }
}