/* ═══════════════════════════════════════════════
   NAIL FATA — Korean Minimal Style
   Author: Genspark AI
   ═══════════════════════════════════════════════ */

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

:root {
  --cream:       #faf7f2;
  --cream-dark:  #f0e9de;
  --blush:       #f8ede8;
  --rose:        #d4909d;
  --rose-deep:   #b5606f;
  --text-dark:   #2a2320;
  --text-mid:    #6b5f5a;
  --text-light:  #a8998f;
  --border:      #e8ddd4;
  --white:       #ffffff;
  --shadow-sm:   0 2px 12px rgba(80,50,40,.06);
  --shadow-md:   0 8px 32px rgba(80,50,40,.12);
  --shadow-lg:   0 20px 60px rgba(80,50,40,.18);
  --radius-sm:   8px;
  --radius-md:   16px;
  --radius-lg:   24px;
  --transition:  .28s cubic-bezier(.4,0,.2,1);
  --font-en:     'Playfair Display', Georgia, serif;
  --font-body:   'Inter', system-ui, sans-serif;
  --header-h:    64px;
}

html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }

body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
a { text-decoration: none; color: inherit; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--cream); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ─── Spinner ─── */
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--rose);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ════════════════════════════════════════
   HEADER
   ════════════════════════════════════════ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,247,242,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  max-width: 1280px; margin: 0 auto;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px;
}
.logo-block {
  display: flex; align-items: center; gap: 10px;
}
.logo-icon {
  font-size: 22px; color: var(--rose-deep);
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-main {
  font-family: var(--font-en); font-size: 20px; font-weight: 500;
  letter-spacing: .12em; color: var(--text-dark);
}
.logo-sub {
  font-size: 9px; letter-spacing: .22em; color: var(--text-light);
  text-transform: uppercase; margin-top: 2px;
}
.header-contact {
  display: flex; align-items: center; gap: 7px;
  background: var(--rose-deep); color: var(--white);
  padding: 9px 18px; border-radius: 100px;
  font-size: 13px; font-weight: 500; letter-spacing: .03em;
  transition: background var(--transition), transform var(--transition);
}
.header-contact:hover { background: #9a4f5e; transform: translateY(-1px); }
.header-contact i { font-size: 11px; }

/* ════════════════════════════════════════
   HERO
   ════════════════════════════════════════ */
.hero {
  position: relative;
  background: linear-gradient(145deg, #fff8f5 0%, #f8ede8 50%, #f0e2d6 100%);
  padding: 72px 20px 60px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212,144,157,.15) 0%, transparent 70%);
}
.hero-content { position: relative; max-width: 600px; margin: 0 auto; }
.hero-eyebrow {
  font-size: 11px; letter-spacing: .3em; color: var(--rose);
  text-transform: uppercase; margin-bottom: 14px;
}
.hero-title {
  font-family: var(--font-en); font-size: clamp(36px, 8vw, 56px);
  font-weight: 500; line-height: 1.2;
  color: var(--text-dark); margin-bottom: 18px;
}
.hero-title em {
  font-style: italic; color: var(--rose-deep);
}
.hero-desc {
  font-size: 14px; color: var(--text-mid); line-height: 1.8;
  margin-bottom: 32px;
}
.hero-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--text-dark); color: var(--white);
  padding: 14px 32px; border-radius: 100px;
  font-size: 14px; font-weight: 500; letter-spacing: .06em;
  transition: all var(--transition);
}
.hero-btn:hover { background: var(--rose-deep); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.hero-btn i { animation: bounce 2s ease-in-out infinite; }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(4px)} }
.hero-color-dots {
  display: flex; justify-content: center; gap: 10px;
  margin-top: 36px;
}
.hero-color-dots span {
  width: 20px; height: 20px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.6);
  box-shadow: 0 2px 6px rgba(0,0,0,.12);
  transition: transform var(--transition);
}
.hero-color-dots span:hover { transform: scale(1.35); }

/* ════════════════════════════════════════
   COLOR NAV
   ════════════════════════════════════════ */
.color-nav {
  position: sticky; top: var(--header-h); z-index: 90;
  background: rgba(250,247,242,.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.color-nav-inner {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}
.color-nav-inner::-webkit-scrollbar { display: none; }

.color-chip {
  flex-shrink: 0; scroll-snap-align: start;
  display: flex; align-items: center; gap: 7px;
  padding: 7px 14px 7px 8px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  background: var(--white);
  font-size: 12.5px; font-weight: 400; color: var(--text-mid);
  transition: all var(--transition);
  white-space: nowrap;
}
.color-chip:hover { border-color: var(--rose); color: var(--rose-deep); }
.color-chip.active {
  background: var(--text-dark); border-color: var(--text-dark);
  color: var(--white); font-weight: 500;
}
.chip-swatch {
  width: 22px; height: 22px; border-radius: 50%;
  flex-shrink: 0;
  border: 1.5px solid rgba(255,255,255,.5);
  box-shadow: 0 1px 4px rgba(0,0,0,.15);
}

/* ════════════════════════════════════════
   FILTER BAR
   ════════════════════════════════════════ */
.filter-bar {
  padding: 16px 16px 0;
  max-width: 1280px; margin: 0 auto;
}
.filter-bar-inner {
  display: flex; flex-direction: column; gap: 12px;
}
.search-wrap {
  position: relative; display: flex; align-items: center;
}
.search-icon {
  position: absolute; left: 14px; font-size: 14px; color: var(--text-light);
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: 11px 40px 11px 40px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--white); font-size: 14px;
  color: var(--text-dark); outline: none;
  font-family: var(--font-body);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input::placeholder { color: var(--text-light); }
.search-input:focus { border-color: var(--rose); box-shadow: 0 0 0 3px rgba(212,144,157,.15); }
.search-clear {
  position: absolute; right: 12px;
  color: var(--text-light); font-size: 13px; padding: 4px;
  transition: color var(--transition);
}
.search-clear:hover { color: var(--text-dark); }

.tag-filters {
  display: flex; flex-wrap: nowrap; gap: 6px;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  padding-bottom: 4px; scrollbar-width: none;
}
.tag-filters::-webkit-scrollbar { display: none; }
.tag-btn {
  flex-shrink: 0;
  padding: 6px 14px; border-radius: 100px;
  border: 1.5px solid var(--border);
  background: var(--white);
  font-size: 12.5px; color: var(--text-mid);
  transition: all var(--transition);
  white-space: nowrap;
}
.tag-btn:hover { border-color: var(--rose); color: var(--rose-deep); }
.tag-btn.active {
  background: var(--rose-deep); border-color: var(--rose-deep);
  color: var(--white); font-weight: 500;
}

.results-count {
  padding: 10px 0 14px;
  font-size: 12.5px; color: var(--text-light); letter-spacing: .03em;
}
.results-count strong { color: var(--rose-deep); }

/* ════════════════════════════════════════
   GALLERY GRID
   ════════════════════════════════════════ */
.gallery-section {
  max-width: 1280px; margin: 0 auto;
  padding: 0 12px 48px;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}
@media (min-width: 480px) {
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
}
@media (min-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
}
@media (min-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 18px; }
}

/* ── Card ── */
.nail-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  will-change: transform;
  animation: fadeIn .4s ease both;
}
@keyframes fadeIn { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:none} }
.nail-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.nail-card:active { transform: scale(.97); }

.card-img-wrap {
  position: relative; overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--cream-dark);
}
.card-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .5s cubic-bezier(.4,0,.2,1);
}
.nail-card:hover .card-img-wrap img { transform: scale(1.06); }

.card-hot-badge {
  position: absolute; top: 8px; right: 8px;
  background: rgba(255,255,255,.92);
  padding: 3px 7px; border-radius: 100px;
  font-size: 10px; font-weight: 600; color: #d44040;
  box-shadow: 0 1px 4px rgba(0,0,0,.1);
  backdrop-filter: blur(4px);
}
.card-zoom-hint {
  position: absolute; inset: 0;
  background: rgba(42,35,32,0);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
}
.card-zoom-hint i {
  color: rgba(255,255,255,0);
  font-size: 24px;
  transition: all var(--transition);
  transform: scale(.7);
}
.nail-card:hover .card-zoom-hint { background: rgba(42,35,32,.2); }
.nail-card:hover .card-zoom-hint i { color: var(--white); transform: scale(1); }

.card-info {
  padding: 10px 12px 12px;
}
.card-code {
  font-size: 10px; color: var(--text-light); letter-spacing: .08em;
  margin-bottom: 3px;
}
.card-name {
  font-size: 12.5px; font-weight: 500; color: var(--text-dark);
  line-height: 1.3; margin-bottom: 6px;
}
.card-tags {
  display: flex; flex-wrap: wrap; gap: 3px;
}
.card-tag {
  font-size: 10px; color: var(--text-mid);
  background: var(--cream); padding: 2px 7px;
  border-radius: 100px; border: 1px solid var(--border);
}

/* ── Loading / Empty ── */
.loading-state {
  grid-column: 1 / -1;
  display: flex; flex-direction: column; align-items: center;
  gap: 16px; padding: 80px 20px;
  color: var(--text-light); font-size: 14px;
}
.empty-state {
  text-align: center; padding: 80px 20px;
  color: var(--text-light);
}
.empty-state i { font-size: 36px; margin-bottom: 12px; opacity: .5; }
.empty-state p { font-size: 15px; margin-bottom: 20px; }
.empty-state button {
  padding: 10px 24px; border-radius: 100px;
  background: var(--text-dark); color: var(--white);
  font-size: 13px; font-weight: 500;
}

/* ════════════════════════════════════════
   LIGHTBOX
   ════════════════════════════════════════ */
.lightbox-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(20,12,10,.85);
  backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease;
}
.lightbox-overlay.active { opacity: 1; pointer-events: all; }

.lightbox {
  position: fixed; inset: 0; z-index: 201;
  display: flex; align-items: flex-end; justify-content: center;
  pointer-events: none; opacity: 0;
  transform: translateY(20px);
  transition: opacity .3s ease, transform .3s ease;
}
@media (min-width: 640px) {
  .lightbox { align-items: center; padding: 16px; transform: scale(.96); }
}
.lightbox.active { opacity: 1; pointer-events: all; transform: translateY(0); }
@media (min-width: 640px) {
  .lightbox.active { transform: scale(1); }
}

.lightbox-content {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
  width: 100%;
  max-height: 94dvh;
  box-shadow: var(--shadow-lg);
}
@media (min-width: 640px) {
  .lightbox-content {
    flex-direction: row;
    border-radius: var(--radius-lg);
    max-width: 860px;
    max-height: 90dvh;
    width: 100%;
  }
}

.lightbox-img-wrap {
  flex: 0 0 auto;
  position: relative;
  background: var(--cream-dark);
  /* 手机：图片保持 3:4 完整比例 */
  aspect-ratio: 3 / 4;
  width: 100%;
  max-height: 56dvh;
  overflow: hidden;
}
@media (min-width: 640px) {
  .lightbox-img-wrap {
    aspect-ratio: auto;
    width: min(360px, 46%);
    max-height: none;
    min-height: 420px;
  }
}
.lightbox-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  object-position: center center;
  transition: opacity .3s ease;
}
.lightbox-loader {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--cream-dark);
  transition: opacity .3s ease;
}
.lightbox-loader.hidden { opacity: 0; pointer-events: none; }

.lightbox-info {
  flex: 1; overflow-y: auto;
  padding: 20px 20px 32px;
  display: flex; flex-direction: column; gap: 0;
  /* 手机底部安全区 */
  padding-bottom: max(24px, env(safe-area-inset-bottom));
}
@media (min-width: 640px) {
  .lightbox-info { padding: 24px 24px 28px; }
}
.lightbox-badge-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.lightbox-code {
  font-size: 11px; letter-spacing: .14em; color: var(--text-light);
  text-transform: uppercase;
}
.lightbox-hot {
  font-size: 11px; font-weight: 600; color: #d44040;
  background: #fff0f0; padding: 2px 8px; border-radius: 100px;
}
.lightbox-name {
  font-family: var(--font-en); font-size: 22px; font-weight: 500;
  color: var(--text-dark); letter-spacing: .04em; margin-bottom: 6px;
}
.lightbox-family {
  font-size: 12.5px; color: var(--rose-deep); margin-bottom: 14px;
}
.lightbox-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 24px;
}
.lightbox-tags span {
  font-size: 12px; color: var(--text-mid);
  background: var(--cream); padding: 4px 12px;
  border-radius: 100px; border: 1px solid var(--border);
}
.lightbox-consult {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--rose-deep); color: var(--white);
  padding: 14px 24px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500;
  transition: all var(--transition);
  text-align: center;
}
.lightbox-consult:hover { background: #9a4f5e; transform: translateY(-1px); }
.lightbox-hint {
  text-align: center; font-size: 12px; color: var(--text-light);
  margin-top: 8px;
}

/* Nav buttons */
.lightbox-close {
  position: fixed; top: 12px; right: 12px; z-index: 202;
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,.92); color: var(--text-dark);
  font-size: 15px; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}
.lightbox-close:hover { background: var(--white); transform: rotate(90deg); }

/* 手机端：左右箭头浮在图片两侧 */
.lightbox-nav {
  position: absolute; z-index: 10;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,.88); color: var(--text-dark);
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  top: 50%; transform: translateY(-50%);
}
.lightbox-prev { left: 10px; }
.lightbox-next { right: 10px; }
.lightbox-nav:hover { background: var(--white); }
.lightbox-nav:disabled { opacity: .25; cursor: default; }

/* 桌面端：箭头回到屏幕两侧 */
@media (min-width: 640px) {
  .lightbox-nav {
    position: fixed;
    width: 44px; height: 44px; font-size: 16px;
    top: 50%; transform: translateY(-50%);
  }
  .lightbox-prev { left: 12px; }
  .lightbox-next { right: 12px; }
}

/* ════════════════════════════════════════
   CONTACT SECTION
   ════════════════════════════════════════ */
.contact-section {
  background: linear-gradient(160deg, #2a2320 0%, #4a3028 100%);
  color: var(--white);
  padding: 64px 20px;
  text-align: center;
}
.contact-deco { font-size: 28px; color: var(--rose); margin-bottom: 16px; }
.contact-section h2 {
  font-family: var(--font-en); font-size: clamp(24px, 5vw, 36px);
  font-weight: 500; margin-bottom: 10px;
}
.contact-section > .contact-inner > p:first-of-type {
  color: rgba(255,255,255,.65); font-size: 14px; margin-bottom: 28px;
}
.contact-inner { max-width: 500px; margin: 0 auto; }
.contact-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--rose-deep); color: var(--white);
  padding: 16px 40px; border-radius: 100px;
  font-size: 18px; font-weight: 600; letter-spacing: .05em;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(181,96,111,.4);
}
.contact-btn:hover { background: var(--rose); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(181,96,111,.5); }
.contact-divider {
  width: 40px; height: 1px; background: rgba(255,255,255,.2);
  margin: 28px auto;
}
.contact-note { font-size: 13px; color: rgba(255,255,255,.5); }

/* ════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════ */
.site-footer {
  background: #1e1614; color: rgba(255,255,255,.4);
  text-align: center; padding: 24px 20px;
}
.footer-logo {
  font-family: var(--font-en); font-size: 18px;
  letter-spacing: .18em; color: rgba(255,255,255,.7);
  margin-bottom: 6px;
}
.footer-copy { font-size: 11px; letter-spacing: .05em; }

/* ════════════════════════════════════════
   SCROLL TO TOP
   ════════════════════════════════════════ */
.scroll-top {
  position: fixed; bottom: 20px; right: 16px; z-index: 99;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--text-dark); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none;
  transform: translateY(10px);
  transition: all var(--transition);
}
.scroll-top.visible { opacity: 1; pointer-events: all; transform: none; }
.scroll-top:hover { background: var(--rose-deep); }

/* ════════════════════════════════════════
   RESPONSIVE TWEAKS
   ════════════════════════════════════════ */
@media (max-width: 380px) {
  .logo-main { font-size: 17px; }
  .hero { padding: 52px 16px 48px; }
  .filter-bar { padding: 12px 12px 0; }
  .gallery-section { padding: 0 8px 40px; }
  .gallery-grid { gap: 8px; }
  .nail-card .card-info { padding: 8px 10px 10px; }
  .card-name { font-size: 11.5px; }
}

/* ── Card stagger animation ── */
.nail-card:nth-child(1)  { animation-delay: .02s }
.nail-card:nth-child(2)  { animation-delay: .04s }
.nail-card:nth-child(3)  { animation-delay: .06s }
.nail-card:nth-child(4)  { animation-delay: .08s }
.nail-card:nth-child(5)  { animation-delay: .10s }
.nail-card:nth-child(6)  { animation-delay: .12s }
.nail-card:nth-child(7)  { animation-delay: .14s }
.nail-card:nth-child(8)  { animation-delay: .16s }
.nail-card:nth-child(9)  { animation-delay: .18s }
.nail-card:nth-child(10) { animation-delay: .20s }
.nail-card:nth-child(11) { animation-delay: .22s }
.nail-card:nth-child(12) { animation-delay: .24s }

/* ── Image transition ── */
.card-img-wrap img {
  transition: src .3s ease, transform .5s cubic-bezier(.4,0,.2,1), opacity .3s ease;
}

/* ── Upload banner ── */
.upload-banner {
  background: linear-gradient(135deg, #fff8f0 0%, #ffeee8 100%);
  border: 1.5px dashed #e8c4b0;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 0 16px 16px;
  max-width: 1280px;
  margin-left: auto; margin-right: auto;
  display: flex; align-items: flex-start; gap: 14px;
}
.upload-banner.hidden { display: none; }
.upload-banner-icon { font-size: 28px; flex-shrink: 0; margin-top: 2px; }
.upload-banner-text h3 { font-size: 14px; font-weight: 600; color: var(--text-dark); margin-bottom: 4px; }
.upload-banner-text p { font-size: 12.5px; color: var(--text-mid); line-height: 1.6; }
.upload-banner-text code {
  background: rgba(0,0,0,.06); padding: 1px 5px; border-radius: 4px;
  font-family: monospace; font-size: 12px; color: var(--rose-deep);
}
.upload-banner-close {
  margin-left: auto; flex-shrink: 0;
  color: var(--text-light); font-size: 18px; padding: 0 4px;
  line-height: 1;
}
.upload-banner-close:hover { color: var(--text-dark); }