/* ========================================
   丝蕊家糕点店 — 全局样式
   新中式精致风格
   ======================================== */

/* CSS Variables */
:root {
  --color-primary: #C43A31;
  --color-primary-dark: #A3302A;
  --color-bg: #FDF8F0;
  --color-bg-white: #FFFFFF;
  --color-accent: #D4A848;
  --color-accent-light: #F0E6D2;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-border: #E8E0D5;
  --color-border-light: #F5F0E8;
  --font-serif: "Noto Serif SC", "SimSun", "STSong", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

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

ul, ol {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Header / Navigation
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
  height: var(--header-height);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--color-text-light);
  display: block;
  font-family: var(--font-sans);
  font-weight: 400;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 8px 16px;
  color: var(--color-text);
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  background: rgba(196, 58, 49, 0.06);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > a::after {
  content: " ▾";
  font-size: 0.7rem;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  padding: 10px 20px;
  border-radius: 0;
}

.nav-dropdown-menu a:hover {
  background: var(--color-bg);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: all var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, #2C1810 0%, #5C2A22 40%, #8B3A2F 100%);
  color: #fff;
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 10 L40 25 L55 25 L45 35 L50 50 L30 40 L10 50 L15 35 L5 25 L20 25 Z' fill='rgba(255,255,255,0.03)'/%3E%3C/svg%3E");
  opacity: 0.3;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  background: rgba(212, 168, 72, 0.2);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  margin-bottom: 24px;
  font-family: var(--font-serif);
}

.hero h1 {
  font-size: 3rem;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero h1 .highlight {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(196, 58, 49, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(196, 58, 49, 0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: #fff;
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(212, 168, 72, 0.3);
}

.btn-accent:hover {
  background: #C4993A;
  color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 48px;
  font-size: 1.1rem;
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: 80px 0;
}

.section-dark {
  background: #2C1810;
  color: #fff;
}

.section-dark h2,
.section-dark h3 {
  color: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  margin-bottom: 12px;
}

.section-header h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-subtitle {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

.section-dark .section-subtitle {
  color: rgba(255,255,255,0.6);
}

/* ========================================
   Feature Grid (4 columns)
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--color-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* ========================================
   Product Cards (3 columns)
   ======================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.product-card-img {
  height: 240px;
  background: var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-lighter);
  font-size: 3rem;
}

.product-card-body {
  padding: 24px;
}

.product-card-body h3 {
  margin-bottom: 8px;
}

.product-card-body p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.product-card-body .btn {
  padding: 10px 24px;
  font-size: 0.9rem;
}

/* ========================================
   Testimonials
   ======================================== */
.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: #fff;
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.testimonial-stars {
  color: var(--color-accent);
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.testimonial-text {
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: 16px;
  line-height: 1.8;
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-text);
}

.testimonial-date {
  font-size: 0.85rem;
  color: var(--color-text-lighter);
}

/* ========================================
   Page Header (inner pages)
   ======================================== */
.page-header {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, #2C1810 0%, #5C2A22 100%);
  color: #fff;
  padding: 60px 0;
  text-align: center;
}

.page-header h1 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.page-header .breadcrumb {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

.page-header .breadcrumb a {
  color: var(--color-accent);
}

/* ========================================
   Content Layout
   ======================================== */
.content-section {
  padding: 60px 0;
}

.content-section h2 {
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
}

.content-section h3 {
  margin: 32px 0 16px;
}

.content-section p {
  margin-bottom: 16px;
  color: var(--color-text-light);
  line-height: 2;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* Category Cards */
.category-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 2px solid transparent;
}

.category-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.category-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.category-card h3 {
  margin-bottom: 8px;
  font-size: 1.2rem;
}

.category-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ========================================
   Product Grid (with image placeholders)
   ======================================== */
.product-item {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.product-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-item-img {
  height: 220px;
  background: linear-gradient(135deg, var(--color-border-light), var(--color-accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-lighter);
  font-size: 3rem;
  position: relative;
}

.product-item-img .placeholder-text {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.product-item-body {
  padding: 20px;
}

.product-item-body h4 {
  margin-bottom: 6px;
}

.product-item-body .price {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.product-item-body .size {
  color: var(--color-text-lighter);
  font-size: 0.85rem;
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-item h2 {
  font-size: 1.1rem;
  padding: 20px 24px;
  cursor: pointer;
  margin: 0;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}

.faq-item h2:hover {
  background: var(--color-bg);
}

.faq-item h2::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 300;
}

.faq-item p {
  padding: 0 24px 20px;
  color: var(--color-text-light);
  line-height: 2;
  margin: 0;
}

/* ========================================
   Process / Steps
   ======================================== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-num {
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 16px;
  font-family: var(--font-serif);
}

.process-step h4 {
  margin-bottom: 8px;
}

.process-step p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ========================================
   Contact Page
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  margin-bottom: 4px;
}

.contact-info-text p {
  color: var(--color-text-light);
  margin: 0;
}

.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition);
  background: var(--color-bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   Map Embed
   ======================================== */
.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--color-border-light);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-lighter);
}

/* ========================================
   CTA Banner
   ======================================== */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  padding: 60px 0;
  text-align: center;
  border-radius: var(--radius-lg);
  margin: 60px 0;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: #2C1810;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.footer-brand p {
  line-height: 1.8;
  font-size: 0.95rem;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  padding: 4px 0;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-qr-hint {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.footer-qr {
  display: block;
  border-radius: 8px;
  border: 2px solid rgba(255,255,255,0.15);
  background: #fff;
  padding: 4px;
  transition: transform 0.3s, border-color 0.3s;
}

.footer-qr:hover {
  transform: scale(1.05);
  border-color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.9rem;
}

/* ========================================
   Floating Contact Button (Mobile)
   ======================================== */
.floating-contact {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  background: #07C160;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(7, 193, 96, 0.4);
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  text-decoration: none;
  transition: transform var(--transition);
}

.floating-contact:hover {
  transform: scale(1.1);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }

  .hero h1 { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }

  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

  .main-nav.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 0 0 0 16px;
    min-width: auto;
  }

  .features-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .testimonials { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }

  .section { padding: 48px 0; }
  .section-header { margin-bottom: 36px; }

  .floating-contact { display: flex; }

  .contact-form { padding: 24px; }
}