/* =============================================================
   components.css — Reusable UI Components
   Siti Fatima Painter Portfolio
   ============================================================= */

/* Skip to Content Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1.5rem;
  background: var(--color-burgundy, #4A1A2C);
  color: var(--color-text-light, #F9F6F0) !important;
  padding: 1rem 1.5rem;
  z-index: 99999;
  text-decoration: none;
  font-family: var(--font-body, 'DM Sans'), sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-gold, #C9A96E);
  transition: top 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-gold, #C9A96E);
  outline-offset: -2px;
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */

.btn {
  display:         inline-flex;
  align-items:     center;
  justify-content: center;
  gap:             var(--spacing-xs);
  padding:         0.8rem 2rem;
  border-radius:   0;
  border:          none;
  cursor:          pointer;
  font-family:     var(--font-body);
  font-size:       0.85rem;
  font-weight:     500;
  letter-spacing:  0.08em;
  text-transform:  uppercase;
  transition:      background  var(--transition-fast),
                   color       var(--transition-fast),
                   box-shadow  var(--transition-fast),
                   transform   var(--transition-fast);
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
}

.btn:active {
  transform: translateY(0);
}

/* Gold Fill Button */
.btn-gold {
  background: var(--color-gold);
  color:      var(--color-text-dark);
}

.btn-gold:hover {
  background:  #d8b87e;
  box-shadow:  0 8px 24px rgba(201, 169, 110, 0.35);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  border:     1px solid var(--color-gold);
  color:      var(--color-gold);
}

.btn-outline:hover {
  background: var(--color-gold);
  color:      var(--color-text-dark);
  box-shadow: 0 8px 24px rgba(201, 169, 110, 0.2);
}

/* Circle Icon Button */
.btn-circle {
  width:           60px;
  height:          60px;
  border-radius:   50%;
  border:          1px solid var(--color-gold);
  background:      transparent;
  display:         flex;
  align-items:     center;
  justify-content: center;
  cursor:          pointer;
  color:           var(--color-gold);
  transition:      background    var(--transition-fast),
                   color         var(--transition-fast),
                   transform     var(--transition-fast),
                   box-shadow    var(--transition-fast);
}

.btn-circle:hover {
  background: var(--color-gold);
  color:      var(--color-text-dark);
  transform:  scale(1.1) rotate(5deg);
  box-shadow: 0 6px 20px rgba(201, 169, 110, 0.3);
}

/* ═══════════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════════ */

.nav-bar {
  position:        fixed;
  top:             0;
  left:            0;
  right:           0;
  z-index:         1000;
  padding:         1rem 0;
  display:         flex;
  justify-content: center;
  align-items:     center;
  background:      rgba(26, 26, 46, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom:   1px solid transparent;
  box-shadow:      none;
  transition:      background   var(--transition-normal),
                   box-shadow   var(--transition-normal),
                   padding      var(--transition-normal),
                   border-color var(--transition-normal);
}

.nav-bar.scrolled {
  background:              rgba(26, 26, 46, 0.95);
  backdrop-filter:         blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom:           1px solid rgba(201, 169, 110, 0.2);
  box-shadow:              0 4px 30px rgba(0, 0, 0, 0.15);
  padding:                 0.7rem 0;
}

.nav-inner {
  max-width:       1400px;
  width:           100%;
  margin:          0 auto;
  padding:         0 2.5rem;
  display:         flex;
  align-items:     center;
  justify-content: space-between;
}

.nav-logo {
  font-family:    var(--font-heading);
  font-size:      1.35rem;
  font-weight:    700;
  color:          var(--color-text-light);
  letter-spacing: 0.02em;
  transition:     color var(--transition-fast), transform var(--transition-fast), letter-spacing var(--transition-fast);
  text-decoration: none;
  display:        inline-flex;
  align-items:    center;
  margin-right:   auto;
}

.nav-logo:hover {
  color:          var(--color-gold);
  transform:      scale(1.02);
  letter-spacing: 0.05em;
}

.nav-links {
  display:         flex;
  align-items:     center;
  justify-content: flex-end;
  margin-left:     auto;
  gap:             var(--spacing-md);
  list-style:      none;
  transform:       translateY(2px);
}

.nav-links a {
  color:          var(--color-text-light);
  text-decoration: none;
  font-size:      0.85rem;
  font-family:    var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position:       relative;
  padding-bottom: 4px;
  opacity:        0.85;
  transition:     opacity var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  display:        inline-block;
}

.nav-links a::after {
  content:    '';
  position:   absolute;
  bottom:     -4px;
  left:       0;
  height:     1px;
  width:      0;
  background: var(--color-gold);
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  opacity:   1;
  color:     var(--color-gold);
  transform: translateY(-1px);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color:   var(--color-gold);
  opacity: 1;
}

/* ── Mobile Hamburger ───────────────────────────────────────── */
.hamburger {
  display:        none;
  flex-direction: column;
  gap:            4px;
  cursor:         pointer;
  padding:        4px;
  background:     transparent;
  border:         none;
  transition:     transform var(--transition-fast);
}

.hamburger:hover {
  transform: scale(1.1);
}

.hamburger:hover span {
  background: var(--color-gold);
}

.hamburger:hover span:nth-child(2) {
  transform: translateX(3px);
}

.hamburger span {
  display:    block;
  width:      24px;
  height:     2px;
  background: white;
  transition: transform   var(--transition-fast),
              opacity     var(--transition-fast),
              width       var(--transition-fast),
              background  var(--transition-fast);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
  width:   0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── Mobile Nav Close Button ────────────────────────────────── */
.mobile-nav-close {
  position:        absolute;
  top:             1.5rem;
  right:           1.5rem;
  background:      transparent;
  border:          1px solid rgba(201, 169, 110, 0.35);
  border-radius:   50%;
  width:           44px;
  height:          44px;
  display:         flex;
  align-items:     center;
  justify-content: center;
  color:           var(--color-gold);
  font-size:       1.5rem;
  line-height:     1;
  cursor:          pointer;
  transition:      background var(--transition-fast),
                   transform  var(--transition-fast),
                   border-color var(--transition-fast);
}

.mobile-nav-close:hover {
  background:    rgba(201, 169, 110, 0.15);
  border-color:  var(--color-gold);
  transform:     scale(1.1) rotate(90deg);
}

.mobile-nav-overlay {
  position:       fixed;
  inset:          0;
  z-index:        1001;
  background:     var(--color-bg-dark);
  display:        flex;
  flex-direction: column;
  align-items:    center;
  justify-content: center;
  gap:            var(--spacing-md);
  transform:      translateX(100%);
  visibility:     hidden;
  transition:     transform var(--transition-normal), visibility var(--transition-normal);
  pointer-events: none; /* prevent capture when hidden */
}

.mobile-nav-overlay.open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto; /* allow interaction when open */
}

.mobile-nav-overlay .nav-links {
  display:        flex !important;
  flex-direction: column;
  align-items:    center;
  gap:            var(--spacing-md);
}

.mobile-nav-overlay .nav-links a {
  font-size: 1.3rem;
  padding:   0.5rem 1rem;
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */

.footer {
  padding:    3rem 1.25rem;
  text-align: center;
  background: var(--color-bg-dark);
  color:      rgba(255, 255, 255, 0.4);
  font-size:  0.85rem;
  font-family: var(--font-body);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-inner {
  max-width: 1400px;
  margin:    0 auto;
  padding:   0 2.5rem;
}

.footer a {
  color: inherit;
  text-decoration: underline;
  transition: opacity var(--transition-fast, 0.2s ease);
}

.footer a:hover {
  opacity: 0.8;
}

.footer-credit {
  white-space: nowrap;
}

/* ═══════════════════════════════════════════════════════════
   BACK TO TOP
   ═══════════════════════════════════════════════════════════ */

.back-to-top {
  position:       fixed;
  bottom:         2rem;
  right:          2rem;
  z-index:        99;
  opacity:        0;
  pointer-events: none;
  transition:     opacity var(--transition-normal);
}

.back-to-top.visible {
  opacity:        1;
  pointer-events: auto;
}

/* ═══════════════════════════════════════════════════════════
   SOCIAL LINKS
   ═══════════════════════════════════════════════════════════ */

.social-links {
  display: flex;
  gap:     var(--spacing-sm);
}

.social-links a {
  color:      var(--color-text-light);
  opacity:    0.7;
  transition: opacity   var(--transition-fast),
              transform var(--transition-fast);
  display:    flex;
  align-items: center;
}

.social-links a:hover {
  opacity:   1;
  transform: translateY(-2px);
}

/* ═══════════════════════════════════════════════════════════
   PAINTING CARDS
   ═══════════════════════════════════════════════════════════ */

.painting-card {
  position:      relative;
  overflow:      hidden;
  cursor:        pointer;
  border-radius: 4px;
  border:        1px solid rgba(26, 26, 46, 0.06);
  box-shadow:    var(--shadow-sm);
  transition:    box-shadow var(--transition-normal), transform var(--transition-normal);
}

.painting-card:hover {
  box-shadow: var(--shadow-lg);
  transform:  translateY(-4px);
}

.painting-card img {
  width:      100%;
  height:     100%;
  object-fit: cover;
  display:    block;
  transition: transform var(--transition-slow);
}

.painting-card:hover img {
  transform: scale(1.03);
}

.painting-card .overlay {
  position:        absolute;
  inset:           0;
  background:      linear-gradient(
                     to top,
                     rgba(26, 26, 46, 0.88) 0%,
                     rgba(26, 26, 46, 0.2) 65%,
                     transparent 100%
                   );
  opacity:         0;
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition:      opacity var(--transition-normal), backdrop-filter var(--transition-normal), -webkit-backdrop-filter var(--transition-normal);
  display:         flex;
  flex-direction:  column;
  justify-content: flex-end;
  padding:         var(--spacing-md);
}

.painting-card:hover .overlay {
  opacity: 1;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.painting-card .overlay h3 {
  color:         white;
  font-family:   var(--font-heading);
  font-size:     1.2rem;
  margin-bottom: 0.25rem;
  transform:     translateY(8px);
  transition:    transform var(--transition-normal);
}

.painting-card .overlay p {
  color:     var(--color-gold);
  font-size: 0.85rem;
  transform: translateY(8px);
  transition: transform var(--transition-normal) 0.05s;
}

.painting-card:hover .overlay h3,
.painting-card:hover .overlay p {
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════════════
   FILTER BAR
   ═══════════════════════════════════════════════════════════ */

.filter-bar {
  display:         flex;
  gap:             0.5rem;
  justify-content: center;
  margin-bottom:   var(--spacing-lg);
  flex-wrap:       wrap;
  background:      rgba(26, 26, 46, 0.02);
  border:          1px solid rgba(26, 26, 46, 0.06);
  border-radius:   50px;
  padding:         0.4rem 0.6rem;
  width:           fit-content;
  margin-left:     auto;
  margin-right:    auto;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.filter-btn {
  background:     transparent;
  border:         none;
  color:          var(--color-text-muted);
  cursor:         pointer;
  font-family:    var(--font-body);
  font-size:      0.82rem;
  font-weight:    500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding:        0.6rem 1.4rem;
  border-radius:  40px;
  transition:     color        var(--transition-fast),
                  background   var(--transition-fast),
                  transform    var(--transition-fast);
}

.filter-btn.active {
  color:        #F9F6F0;
  background:   var(--color-burgundy);
  box-shadow:   0 4px 10px rgba(74, 26, 44, 0.25);
}

.filter-btn:hover {
  color:     var(--color-burgundy);
  transform: translateY(-1px);
}

.filter-btn.active:hover {
  color:     #F9F6F0;
}

/* ═══════════════════════════════════════════════════════════
   TIMELINE
   ═══════════════════════════════════════════════════════════ */

.timeline {
  position:     relative;
  padding-left: 2.5rem;
  max-width:    760px;
  margin:       2.5rem auto 0;
}

.timeline::before {
  content:    '';
  position:   absolute;
  left:       0.5rem;
  top:        0.5rem;
  bottom:     0;
  width:      2px;
  background: var(--color-gold);
  opacity:    0.35;
}

.timeline-item {
  position:      relative;
  padding-bottom: 2.25rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content:       '';
  position:      absolute;
  left:          -2rem;
  top:           0.35rem;
  width:         12px;
  height:        12px;
  border-radius: 50%;
  background:    var(--color-gold);
  border:        2px solid var(--color-bg-cream);
  transform:     translateX(-6px);
}

.section-dark .timeline-item::before {
  border-color: var(--color-bg-dark);
}

.timeline-item .year {
  font-family:   var(--font-heading);
  font-size:     1.25rem;
  color:         var(--color-gold);
  font-weight:   700;
  margin-bottom: 0.25rem;
  display:       block;
}

.timeline-item .title {
  font-family:   var(--font-heading);
  font-size:     1.1rem;
  font-weight:   700;
  color:         var(--color-text-dark);
  margin-bottom: 0.35rem;
  line-height:   1.4;
}

.section-dark .timeline-item .title {
  color:         var(--color-text-light);
}

.timeline-item .description {
  font-size:   0.95rem;
  color:       var(--color-text-muted);
  line-height: 1.6;
}

.section-dark .timeline-item .description {
  color:       rgba(255, 255, 255, 0.7);
}

/* ═══════════════════════════════════════════════════════════
   CONTACT FORM
   ═══════════════════════════════════════════════════════════ */

.contact-form {
  display:        flex;
  flex-direction: column;
  gap:            var(--spacing-sm);
}

.contact-form input,
.contact-form textarea {
  width:       100%;
  padding:     1rem;
  background:  #ffffff;
  border:      1px solid rgba(26, 26, 46, 0.25);
  font-family: var(--font-body);
  font-size:   1rem;
  color:       var(--color-text-dark);
  transition:  border-color var(--transition-fast),
               box-shadow   var(--transition-fast);
  outline:     none;
}

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

.contact-form input:focus,
.contact-form textarea:focus {
  outline:      none;
  border-color: var(--color-gold);
  box-shadow:   0 0 0 3px rgba(201, 169, 110, 0.12);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color:   rgba(26, 26, 46, 0.55);
  opacity: 1;
}

/* ═══════════════════════════════════════════════════════════
   GRAIN OVERLAY (Subtle Film Noise Texture)
   ═══════════════════════════════════════════════════════════ */

.grain-overlay {
  display: none !important;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

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

  .hamburger {
    display: flex;
  }

  .filter-bar {
    gap:           var(--spacing-xs);
    margin-bottom: var(--spacing-md);
  }

  .back-to-top {
    bottom: 1.5rem;
    right:  1.5rem;
  }
}

@media (max-width: 480px) {
  .nav-bar {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .btn {
    padding: 0.7rem 1.5rem;
  }

  .filter-btn {
    padding:   0.4rem 0.75rem;
    font-size: 0.78rem;
  }

  .footer {
    padding: 2.5rem 0.75rem;
    font-size: 0.78rem;
  }

  .footer-credit {
    white-space: nowrap;
    font-size: 0.75rem;
  }
}