/* ============================================
   FIVE SPACE WORLD — DESIGN SYSTEM
   Architecture firm. Civic scale.
   Sky gradient (Cerulean → Blueprint) structural.
   Grey sandstone (concrete) interactive.
   Sister brand: Safa Zahan (copper/earth tones).
   ============================================ */

/* ── TOKENS ─────────────────────────────────── */
:root {
  /* Sky — structural gradient colours */
  --sky:          #2A7FBA;   /* Cerulean — gradient start */
  --sky-end:      #1A5276;   /* Blueprint — gradient end  */
  --sky-lt:       #5AAAD4;   /* Hover text on dark bg     */
  --sky-dk:       #0E3248;   /* Darkest sky — deep text   */
  --sky-mist:     #C8E8F8;   /* Light sky — text on dark  */

  /* Gradients — Cerulean → Blueprint */
  --grad-nav:     linear-gradient(90deg, #1A5276 0%, #2A7FBA 50%, #1A6A90 100%);
  --grad-footer:  linear-gradient(90deg, #1A5276 0%, #2A7FBA 100%);
  --grad-stats:   linear-gradient(90deg, #2A7FBA 0%, #1A5276 100%);
  --grad-section: linear-gradient(160deg, #2A7FBA 0%, #0E3248 100%);
  --grad-hero-bar:linear-gradient(90deg, #2A7FBA, #1A5276, #2A7FBA);
  --grad-dark-nav:linear-gradient(90deg, #0C2E42 0%, #164860 50%, #0C3850 100%);

  /* Concrete / Grey sandstone — interactive elements */
  --concrete:     #9A9088;   /* Buttons, active states    */
  --concrete-lt:  #C4BCB4;   /* Borders, dividers         */
  --concrete-dk:  #6A6058;   /* Body text, hover          */
  --concrete-pale:#E8E4E0;   /* Backgrounds, cards        */

  /* Neutrals */
  --cream:        #E8E4E0;   /* Warm grey sandstone — page bg */
  --cream-dk:     #DDD9D4;   /* Slightly darker sandstone  */
  --earth:        #3A3630;   /* Near-black body text      */
  --earth-dk:     #1C1A18;   /* Deepest dark              */

  /* Aliases — keep component references working */
  --copper:       var(--concrete);
  --copper-lt:    var(--concrete-lt);
  --sandstone:    var(--concrete);
  --sandstone-lt: var(--concrete-lt);
  --forest:       var(--sky-dk);
  --patina:       var(--sky-end);
  --moss:         var(--sky);
  --moss-lt:      var(--sky-lt);
  --moss-dk:      var(--sky-dk);
  --slate:        var(--concrete-dk);
  --sage:         var(--concrete);
  --stone:        var(--concrete-lt);
  --stone-lt:     var(--concrete-pale);

  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  /* Layout */
  --max-w:    1280px;
  --gutter:   clamp(1.25rem, 5vw, 3rem);
}

/* ── DARK MODE ───────────────────────────────── */
[data-theme="dark"] {
  --cream:         #0A1620;
  --cream-dk:      #0F2030;
  --earth:         #C8E8F8;
  --earth-dk:      #E8F4FF;
  --concrete:      #9A9088;
  --concrete-lt:   #6A6058;
  --concrete-dk:   #C4BCB4;
  --concrete-pale: #162436;
  --sky-mist:      #80C0E0;
  --sky-lt:        #4090B0;
  --grad-nav:      linear-gradient(90deg, #0C2E42 0%, #164860 50%, #0C3850 100%);
  --grad-footer:   linear-gradient(90deg, #0C2E42 0%, #164860 100%);
  --grad-stats:    linear-gradient(90deg, #164860 0%, #0C2E42 100%);
  --grad-section:  linear-gradient(160deg, #164860 0%, #060E14 100%);
}

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

html { scroll-behavior: smooth; }

body {
  font-family:      var(--font-body);
  font-weight:      400;
  background-color: var(--cream);
  color:            var(--earth);
  line-height:      1.7;
  opacity:          1 !important; /* never hide body if JS fails */
  opacity:          0;
  transition:       opacity 0.5s ease;
}

body.loaded { opacity: 1; }

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }
button { cursor: pointer; }

/* ── TYPOGRAPHY ──────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 300;
  color:       var(--earth-dk);
  line-height: 1.2;
}

p { font-weight: 400; line-height: 1.8; }

.section-label {
  font-family:    var(--font-body);
  font-size:      0.65rem;
  font-weight:    600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color:          var(--concrete);
  margin-bottom:  var(--space-sm);
}

/* ── LAYOUT ──────────────────────────────────── */
.wrap {
  max-width: var(--max-w);
  margin:    0 auto;
  padding:   0 var(--gutter);
}

.page-header {
  padding:    var(--space-xl) var(--gutter) var(--space-lg);
  max-width:  var(--max-w);
  margin:     0 auto;
}

section { padding: var(--space-xl) var(--gutter); max-width: var(--max-w); margin: 0 auto; }

/* ── NAV ─────────────────────────────────────── */
.site-nav {
  position:   fixed;
  top:        0; left: 0; right: 0;
  z-index:    100;
  padding:    0.6rem var(--gutter);
  display:    flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s, backdrop-filter 0.4s;
}

.site-nav.scrolled {
  background:       rgba(26,82,118,0.95);
  backdrop-filter:  blur(12px);
  border-bottom:    1px solid rgba(255,255,255,0.1);
}

[data-theme="dark"] .site-nav.scrolled {
  background: rgba(9,24,36,0.95);
}

.nav-logo {
  display:         flex;
  flex-direction:  row;
  align-items:     center;
  gap:             0.7rem;
  text-decoration: none;
}

.nav-logo-img {
  height:      38px;
  width:       auto;
  object-fit:  contain;
  display:     block;
  flex-shrink: 0;
}

.nav-logo-text {
  display:        flex;
  flex-direction: column;
  line-height:    1.2;
  gap:            0;
}

.nav-logo-fsw {
  font-family:    var(--font-display);
  font-size:      1.6rem;
  font-weight:    500;
  color:          #FFFFFF;
  letter-spacing: 0.06em;
  line-height:    1;
}

.nav-logo-sub {
  font-family:    var(--font-body);
  font-size:      0.54rem;
  font-weight:    500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color:          rgba(200, 232, 248, 0.75);
  margin-top:     0.12rem;
}

.nav-links {
  display:     flex;
  align-items: center;
  gap:         2.5rem;
  list-style:  none;
}

.nav-links a {
  font-size:      0.78rem;
  font-weight:    600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color:          rgba(200,232,248,0.92);
  transition:     color 0.3s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--sky-mist); }

.nav-controls {
  display:     flex;
  align-items: center;
  gap:         1rem;
}

/* Theme toggle */
.theme-toggle {
  width:  2rem; height: 2rem;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  transition: all 0.3s;
  color: var(--sky-mist);
}

.theme-toggle:hover { border-color: var(--sky-mist); color: #fff; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  width: 24px; background: none; border: none; padding: 4px;
}

.nav-hamburger span {
  display: block; height: 1px;
  background: var(--forest); transition: all 0.3s;
}

/* Mobile drawer */
.nav-drawer {
  display: none; position: fixed;
  inset: 0; z-index: 99;
  background: var(--cream);
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2.5rem;
}

.nav-drawer.open { display: flex; }

.nav-drawer a {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 300;
  color: var(--forest);
  letter-spacing: 0.05em;
}

.drawer-close {
  position: absolute; top: 1.5rem; right: var(--gutter);
  background: none; border: none;
  font-size: 1.8rem; color: var(--slate);
}

@media (max-width: 768px) {
  .nav-links  { display: none; }
  .nav-hamburger { display: flex; }
}

/* ── HERO ─────────────────────────────────────── */
.hero {
  min-height:      100svh;
  display:         flex;
  flex-direction:  column;
  align-items:     center;
  justify-content: center;
  text-align:      center;
  padding:         var(--space-xl) var(--gutter) var(--space-lg);
  position:        relative;
  overflow:        hidden;
}

.hero-eyebrow {
  font-size:      0.6rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color:          var(--moss-lt);
  margin-bottom:  1.5rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size:   clamp(3.5rem, 10vw, 9rem);
  font-weight: 300;
  color:       var(--forest);
  line-height: 1.0;
  margin-bottom: 0.2em;
}

[data-theme="dark"] .hero-title { color: var(--earth-dk); }

.hero-subtitle {
  font-size:      clamp(0.75rem, 1.5vw, 0.9rem);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color:          var(--slate);
  margin-bottom:  var(--space-lg);
}

/* Geometric ornament */
.hero-ornament {
  position: absolute;
  width: 600px; height: 600px;
  border: 1px solid var(--moss);
  border-radius: 50%;
  opacity: 0.055;
  animation: slow-spin 40s linear infinite;
  pointer-events: none;
}

@keyframes slow-spin { to { transform: rotate(360deg); } }

/* ── BUTTONS ─────────────────────────────────── */
.btn-primary {
  display:        inline-block;
  padding:        0.85rem 2.5rem;
  background:     var(--concrete);
  color:          #fff;
  font-family:    var(--font-body);
  font-size:      0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  border:         none;
  transition:     background 0.3s, transform 0.2s;
}

.btn-primary:hover { background: var(--concrete-dk); transform: translateY(-1px); }

.btn-outline {
  display:        inline-block;
  padding:        0.75rem 2rem;
  border:         1px solid var(--concrete);
  color:          var(--concrete-dk);
  font-size:      0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  background:     transparent;
  transition:     all 0.3s;
}

.btn-outline:hover { background: var(--concrete); color: #fff; }

.btn-sm {
  padding:        0.4rem 0.9rem;
  font-size:      0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border:         1px solid currentColor;
  background:     transparent;
  transition:     all 0.25s;
}

.btn-edit   { color: var(--sky); }
.btn-delete { color: #b94040; border-color: #b94040; }
.btn-edit:hover   { background: var(--sky);  color: #fff; }
.btn-delete:hover { background: #b94040; color: #fff; }

/* ── PROJECT CARDS ───────────────────────────── */
.projects-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap:                   2rem;
  margin-top:            var(--space-lg);
}

.project-card {
  display:        block;
  text-decoration: none;
  color:          inherit;
}

.project-card-img {
  width:       100%;
  aspect-ratio: 4/3;
  object-fit:  cover;
  background:  var(--stone-lt);
  transition:  transform 0.6s ease;
}

.project-card:hover .project-card-img { transform: scale(1.02); }

.project-card-body { padding: 1rem 0 0; }

.project-card-title {
  font-family:   var(--font-display);
  font-size:     1.3rem;
  font-weight:   300;
  color:         var(--forest);
  margin-bottom: 0.25rem;
}

[data-theme="dark"] .project-card-title { color: var(--earth-dk); }

.project-card-meta {
  font-size:      0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color:          var(--sage);
}

/* Skeleton loaders */
.project-skeleton {
  aspect-ratio: 4/3;
  background: linear-gradient(90deg, var(--stone-lt) 25%, var(--stone) 50%, var(--stone-lt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer { to { background-position: -200% 0; } }

/* ── FILTER BAR ──────────────────────────────── */
.filter-bar {
  display:    flex;
  gap:        0.5rem;
  flex-wrap:  wrap;
  padding:    0 var(--gutter);
  max-width:  var(--max-w);
  margin:     0 auto var(--space-sm);
}

.filter-btn {
  padding:        0.5rem 1.25rem;
  font-size:      0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border:         1px solid var(--stone-lt);
  background:     transparent;
  color:          var(--slate);
  transition:     all 0.25s;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--concrete);
  border-color: var(--concrete);
  color: #fff;
}

/* ── ALL PROJECTS GRID ───────────────────────── */
.all-projects-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap:                   2rem;
  padding:               var(--space-sm) var(--gutter) var(--space-xl);
  max-width:             var(--max-w);
  margin:                0 auto;
}

/* ── PROJECT DETAIL ──────────────────────────── */
.project-hero-img {
  width:      100%;
  max-height: 70vh;
  object-fit: cover;
  background: var(--stone-lt);
}

.project-meta-bar {
  display:         flex;
  flex-wrap:       wrap;
  gap:             2rem;
  padding:         var(--space-md) 0;
  border-top:      1px solid var(--stone-lt);
  border-bottom:   1px solid var(--stone-lt);
  margin:          var(--space-md) 0;
}

.project-meta-item {}

.project-meta-item .label {
  font-size:      0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color:          var(--moss-lt);
  margin-bottom:  0.2rem;
}

.project-meta-item .value {
  font-family: var(--font-display);
  font-size:   1.1rem;
  color:       var(--forest);
}

[data-theme="dark"] .project-meta-item .value { color: var(--earth-dk); }

.gallery-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap:                   1rem;
  margin-top:            var(--space-md);
}

.gallery-grid img {
  width:        100%;
  aspect-ratio: 4/3;
  object-fit:   cover;
}

/* ── FORMS ───────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.25rem; }

.form-group label {
  font-size:      0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color:          var(--slate);
}

.form-group input,
.form-group textarea,
.form-group select {
  background:    var(--cream-dk);
  border:        1px solid var(--stone-lt);
  border-radius: 0;
  padding:       0.75rem 1rem;
  font-family:   var(--font-body);
  font-size:     0.9rem;
  color:         var(--forest);
  width:         100%;
  transition:    border-color 0.25s;
  outline:       none;
  appearance:    none;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select {
  background: #1C241B;
  color: var(--earth-dk);
  border-color: var(--sandstone-lt);
}

.form-group input:focus,
.form-group textarea:focus { border-color: var(--moss); }

.form-group input.invalid,
.form-group textarea.invalid { border-color: #b94040; }

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--sage); opacity: 0.6; }

/* ── STATS BAR ───────────────────────────────── */
.stats-bar {
  background:      linear-gradient(90deg, #2A7FBA 0%, #1A5276 100%);
  display:         grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin:          var(--space-lg) 0;
  border-radius:   2px;
  overflow:        hidden;
}

.stat-item {
  background:  transparent;
  padding:     var(--space-md) var(--space-sm);
  text-align:  center;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item:last-child { border-right: none; }

[data-theme="dark"] .stats-bar {
  background: linear-gradient(90deg, #0C2E42 0%, #164860 100%);
}

[data-theme="dark"] .stat-item { background: transparent; }

[data-theme="dark"] .section-label {
  color: var(--sky-lt);
  opacity: 1;
}

.stat-number {
  font-family: var(--font-display);
  font-size:   clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  color:       #FFFFFF;
  line-height: 1;
}

.stat-label {
  font-size:      0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color:          rgba(255, 255, 255, 0.68);
  margin-top:     0.4rem;
}

/* ── ABOUT GRID ──────────────────────────────── */
.about-grid {
  display:               grid;
  grid-template-columns: 1fr 1fr;
  gap:                   var(--space-xl);
  align-items:           start;
}

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

/* ── CONTACT ─────────────────────────────────── */
.contact-section {
  display:               grid;
  grid-template-columns: 1fr 1.4fr;
  gap:                   var(--space-xl);
  align-items:           start;
}

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

.contact-info p { line-height: 1.9; margin-bottom: var(--space-sm); }

.contact-detail { margin-top: var(--space-md); display: flex; flex-direction: column; gap: 0.85rem; }

.contact-detail-item { display: flex; flex-direction: column; gap: 0.2rem; }

.contact-detail-item .label {
  font-size: 0.65rem; letter-spacing: 0.25em;
  text-transform: uppercase; color: var(--sky-lt);
  font-weight: 600;
}

.contact-detail-item .value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--earth);
}

[data-theme="dark"] .contact-detail-item .value {
  color: var(--earth);
}

/* ── FOOTER ──────────────────────────────────── */
.site-footer {
  border-top:  1px solid var(--stone-lt);
  padding:     var(--space-lg) var(--gutter);
  display:     flex;
  flex-wrap:   wrap;
  gap:         1rem;
  align-items: center;
  justify-content: space-between;
  max-width:   var(--max-w);
  margin:      0 auto;
}

.footer-brand {
  font-family: var(--font-display);
  font-size:   1.2rem;
  color:       var(--moss);
}

.footer-copy {
  font-size:      0.65rem;
  letter-spacing: 0.12em;
  color:          var(--sage);
}

/* ── MODAL ───────────────────────────────────── */
.modal-overlay {
  display:         none;
  position:        fixed; inset: 0; z-index: 200;
  background:      rgba(20,26,19,0.7);
  align-items:     center;
  justify-content: center;
  padding:         var(--gutter);
}

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

.modal {
  background:  var(--cream);
  padding:     var(--space-md);
  max-width:   720px; width: 100%;
  max-height:  90vh; overflow-y: auto;
}

[data-theme="dark"] .modal { background: #1C241B; }

.modal-title {
  font-family:   var(--font-display);
  font-size:     1.6rem;
  margin-bottom: var(--space-sm);
  color:         var(--forest);
}

[data-theme="dark"] .modal-title { color: var(--earth-dk); }

.modal-close {
  position:   absolute; top: 1rem; right: 1rem;
  background: none; border: none;
  font-size:  1.5rem; color: var(--sage);
}

/* ── ADMIN ───────────────────────────────────── */
.admin-wrap { max-width: 900px; margin: 0 auto; padding: var(--space-md) var(--gutter); }

.admin-header {
  display:         flex;
  justify-content: space-between;
  align-items:     center;
  margin-bottom:   var(--space-md);
  padding-bottom:  var(--space-sm);
  border-bottom:   1px solid var(--stone-lt);
}

.admin-project-list { display: flex; flex-direction: column; gap: 0.75rem; }

.admin-project-item {
  display:         flex;
  align-items:     center;
  gap:             1rem;
  padding:         0.75rem var(--space-sm);
  background:      var(--cream-dk);
  border:          1px solid var(--stone-lt);
}

.admin-project-thumb {
  width: 60px; height: 45px;
  object-fit: cover; flex-shrink: 0;
  background: var(--stone-lt);
}

.admin-project-info { flex: 1; }

.admin-project-info strong {
  font-family: var(--font-display);
  font-size:   1.1rem; font-weight: 400;
  display:     block;
  color:       var(--forest);
}

[data-theme="dark"] .admin-project-info strong { color: var(--earth-dk); }

.admin-project-info span {
  font-size:      0.65rem;
  letter-spacing: 0.1em;
  color:          var(--moss-lt);
}

.admin-project-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }

/* ── SCROLL ANIMATIONS ───────────────────────── */
.scroll-target {
  opacity:    0;
  transform:  translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

/* Fallback — if JS never runs, show content after 1s via animation */
.scroll-target {
  animation: revealFallback 0s 1.5s forwards;
}

@keyframes revealFallback {
  to { opacity: 1; transform: translateY(0); }
}

.scroll-target.visible {
  opacity:   1;
  transform: none;
}

/* ── BACK TO TOP ─────────────────────────────── */
.back-top {
  position:   fixed; bottom: 1.5rem; right: 1.5rem; z-index: 50;
  width:  48px; height: 48px;
  background: var(--concrete);
  color:      #fff;
  border:     none;
  font-size:  1.1rem;
  display:    flex; align-items: center; justify-content: center;
  opacity:    0; pointer-events: none;
  transition: opacity 0.3s, background 0.3s;
}

.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover   { background: var(--concrete-dk); }

/* ── PAGE TRANSITIONS ────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-in { animation: fadeInUp 0.7s ease both; }


/* ── Dark mode heading overrides — inline sky-dk becomes unreadable on dark bg ── */
[data-theme="dark"] h2,
[data-theme="dark"] h3 {
  color: var(--earth-dk) !important;
}

[data-theme="dark"] .philosophy-item h4 {
  color: var(--sky-lt) !important;
}

[data-theme="dark"] p {
  color: var(--earth);
}