/* ============================================================
   zailiu-tokens.css — 在留.com Design Tokens
   签证报告生成器风格 (Visa Report Generator)
   ============================================================ */

:root {
  /* ── Backgrounds ── */
  --z-bg-base:        #f8fafc;
  --z-bg-surface:     #ffffff;
  --z-bg-surface-alt: #f1f5f9;
  --z-bg-warm:        #fafaf9;
  --z-bg-hover:       rgba(0,0,0,0.03);

  /* ── Brand / Accent (cyan) ── */
  --z-brand-primary:  #0891b2;
  --z-brand-light:    #06b6d4;
  --z-brand-dark:     #0e7490;
  --z-brand-bg:       rgba(8,145,178,0.08);
  --z-primary-light:  rgba(8,145,178,0.06);

  /* ── Secondary palette ── */
  --z-secondary:      #0d9488;
  --z-accent:         #f59e0b;
  --z-success:        #10b981;
  --z-warning:        #f59e0b;
  --z-error:          #ef4444;
  --z-growth:         #10b981;

  /* ── Text ── */
  --z-text-primary:   #0f172a;
  --z-text-secondary: #475569;
  --z-text-dim:       #94a3b8;

  /* ── Borders ── */
  --z-border:         #cbd5e1;
  --z-border-light:   #e2e8f0;

  /* ── Spacing scale ── */
  --z-space-1:  4px;
  --z-space-2:  8px;
  --z-space-3:  12px;
  --z-space-4:  16px;
  --z-space-5:  20px;
  --z-space-6:  24px;
  --z-space-8:  32px;
  --z-space-10: 40px;
  --z-space-12: 48px;
  --z-space-16: 64px;
  --z-space-20: 80px;

  /* ── Radii ── */
  --z-radius-sm:   8px;
  --z-radius-md:   12px;
  --z-radius-lg:   16px;
  --z-radius-xl:   24px;
  --z-radius-full: 999px;

  /* ── Shadows ── */
  --z-shadow-sm:    0 1px 3px rgba(0,0,0,0.04);
  --z-shadow-card:  0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --z-shadow-hover: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --z-glow-primary: 0 0 0 1px rgba(8,145,178,0.06);

  /* ── Typography ── */
  --z-font-sans: 'Inter', 'Noto Sans SC', 'Noto Sans JP',
                 -apple-system, BlinkMacSystemFont, 'Segoe UI',
                 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans',
                 sans-serif;

  /* ── Layout ── */
  --z-nav-height: 64px;

  /* ── Easing ── */
  --z-ease:       cubic-bezier(0.2, 0, 0, 1);
  --z-transition: 200ms var(--z-ease);
}

/* ============================================================
   RESET & BASE (shared across all pages)
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--z-font-sans);
  background-color: var(--z-bg-base);
  color: var(--z-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

/* ============================================================
   AMBIENT GLOW (subtle bg decoration)
   ============================================================ */
.ambient-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-glow::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -15%;
  width: 50%;
  height: 60%;
  background: radial-gradient(ellipse at center, rgba(8,145,178,0.08) 0%, rgba(8,145,178,0.02) 40%, transparent 70%);
  transform: rotate(-15deg);
}

.ambient-glow::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 45%;
  height: 55%;
  background: radial-gradient(ellipse at center, rgba(245,158,11,0.06) 0%, rgba(245,158,11,0.02) 40%, transparent 70%);
  transform: rotate(10deg);
}

/* ============================================================
   SHOJI BACKGROUND PATTERN
   ============================================================ */
.shoji-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image:
    repeating-linear-gradient(
      to right,
      transparent,
      transparent 120px,
      var(--z-border-light) 120px,
      var(--z-border-light) 121px
    ),
    repeating-linear-gradient(
      to bottom,
      transparent,
      transparent 120px,
      var(--z-border-light) 120px,
      var(--z-border-light) 121px
    );
}

/* ============================================================
   GRADIENT DIVIDER
   ============================================================ */
.section-divider {
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    var(--z-border) 20%,
    var(--z-border) 80%,
    transparent 100%
  );
  border: none;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

/* ============================================================
   CONTAINER
   ============================================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--z-space-6);
  position: relative;
  z-index: 1;
}

/* ============================================================
   SHARED NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--z-nav-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--z-border-light);
  z-index: 100;
  display: flex;
  align-items: center;
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--z-space-3);
  flex-shrink: 0;
}

.nav-logo svg {
  width: 32px;
  height: 32px;
}

.nav-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--z-brand-primary);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--z-space-8);
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--z-text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--z-brand-primary);
  border-radius: 1px;
  transition: width 0.25s ease;
}

.nav-links a:hover {
  color: var(--z-brand-primary);
}

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

.nav-links a.active {
  color: var(--z-brand-primary);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--z-space-3);
  flex-shrink: 0;
}

.lang-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--z-radius-full);
  border: 1px solid var(--z-border);
  background: var(--z-bg-surface);
  color: var(--z-text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.lang-toggle-btn:hover {
  background: var(--z-bg-hover);
}

.globe-icon {
  width: 15px;
  height: 15px;
}

.btn-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--z-space-2) var(--z-space-5);
  background: var(--z-brand-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--z-radius-sm);
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  font-family: var(--z-font-sans);
  letter-spacing: 0.01em;
  flex-shrink: 0;
}

.btn-login:hover {
  background: var(--z-brand-dark);
  transform: translateY(-1px);
}

/* Hamburger menu (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--z-space-1);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--z-text-primary);
  border-radius: 2px;
  transition: all 0.25s ease;
}

/* ============================================================
   SHARED FOOTER
   ============================================================ */
.footer {
  padding: var(--z-space-16) 0 var(--z-space-8);
  border-top: 1px solid var(--z-border-light);
  position: relative;
  z-index: 1;
  background: var(--z-bg-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--z-space-12);
  margin-bottom: var(--z-space-12);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--z-space-4);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--z-space-2);
}

.footer-logo svg {
  width: 28px;
  height: 28px;
}

.footer-logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--z-text-primary);
}

.footer-desc {
  font-size: 13px;
  color: var(--z-text-dim);
  line-height: 1.7;
  max-width: 260px;
}

.footer-social {
  display: flex;
  gap: var(--z-space-3);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--z-radius-full);
  border: 1px solid var(--z-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--z-text-dim);
  transition: all 0.2s ease;
}

.footer-social a:hover {
  border-color: var(--z-brand-primary);
  color: var(--z-brand-primary);
  background: var(--z-brand-bg);
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--z-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--z-space-4);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--z-space-3);
}

.footer-col ul a {
  font-size: 13px;
  color: var(--z-text-secondary);
  transition: color 0.2s ease;
}

.footer-col ul a:hover {
  color: var(--z-brand-primary);
}

.footer-bottom {
  padding-top: var(--z-space-6);
  border-top: 1px solid var(--z-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--z-space-4);
}

.footer-copy {
  font-size: 12px;
  color: var(--z-text-dim);
}

.footer-lang {
  display: flex;
  align-items: center;
  gap: var(--z-space-2);
  font-size: 12px;
  color: var(--z-text-dim);
}

.footer-lang select {
  background: var(--z-bg-base);
  border: 1px solid var(--z-border-light);
  border-radius: var(--z-radius-sm);
  padding: var(--z-space-1) var(--z-space-2);
  font-size: 12px;
  color: var(--z-text-secondary);
  font-family: var(--z-font-sans);
  cursor: pointer;
}

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

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--z-nav-height);
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    padding: var(--z-space-6);
    border-bottom: 1px solid var(--z-border-light);
    gap: var(--z-space-5);
    align-items: center;
  }

  .nav-links.open a {
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--z-space-8);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--z-space-4);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}