/* ========================================
   SHIZUKU JAPAN TRAVEL — BASE STYLES
   Theme: Slow, Quiet, Authentic Japan Travel
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;600&family=Shippori+Mincho:wght@400;500;600&display=swap');

:root {
  /* Core palette — paper, gardens, ink, wood, seasonal pulse */
  --cream: #F8F4EC;
  --stone: #D4C9B5;
  --moss: #4A5D4E;
  --forest: #2F3F35;
  --navy: #1A2A3A;
  --ink: #0F1A24;
  --wood: #B89D6E;
  --red: #A13F3F;
  --white: #FFFFFF;
  --gray: #E8E4DC;
  --light-moss: #6B7F6D;

  /* Spacing & rhythm */
  --space-xs: 8px;
  --space-sm: 14px;
  --space-md: 24px;
  --space-lg: 42px;
  --space-xl: 64px;
  --space-2xl: 92px;

  /* Typography */
  --font-serif: 'Noto Serif JP', 'Shippori Mincho', 'Yu Mincho', serif;
  --font-mincho: 'Shippori Mincho', 'Noto Serif JP', serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  background-color: var(--cream);
  color: var(--navy);
  line-height: 1.82;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-mincho);
  font-weight: 500;
  line-height: 1.35;
}

h1 { font-size: 42px; letter-spacing: -0.3px; }
h2 { font-size: 28px; }
h3 { font-size: 21px; }
h4 { font-size: 17px; }

p {
  margin-bottom: 1.1em;
}

a {
  color: var(--navy);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--red);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 22px;
}

/* Header */
header {
  background: var(--white);
  border-bottom: 1px solid var(--gray);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 11px;
}

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.8px;
  color: var(--navy);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14.2px;
}

.nav-desktop a {
  font-weight: 400;
  position: relative;
  padding: 4px 0;
}

.nav-desktop a:after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--red);
  transition: width 0.3s ease;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  color: var(--navy);
  cursor: pointer;
  padding: 4px;
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 78%;
  max-width: 300px;
  height: 100vh;
  background: var(--white);
  box-shadow: -4px 0 24px rgba(0,0,0,0.12);
  z-index: 1100;
  padding: 82px 26px 40px;
  transition: right 0.42s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav a {
  display: block;
  padding: 13px 0;
  border-bottom: 1px solid var(--gray);
  font-size: 15.2px;
}

/* Breadcrumb */
.nav-breadcrumb {
  background: var(--white);
  padding: 11px 0;
  font-size: 13.2px;
  border-bottom: 1px solid var(--gray);
}

.nav-breadcrumb a {
  color: var(--moss);
}

.nav-breadcrumb span {
  margin: 0 7px;
  color: #999;
}

/* Buttons */
.btn {
  display: inline-block;
  background-color: var(--navy);
  color: var(--white);
  padding: 13px 30px;
  font-size: 14.5px;
  font-family: var(--font-serif);
  letter-spacing: 0.4px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.btn:hover {
  background-color: var(--red);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--white);
  color: var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--navy);
}

.btn-small {
  padding: 9px 20px;
  font-size: 13.5px;
}

/* Section rhythm */
.section {
  padding: var(--space-2xl) 0;
}

.section-title {
  font-size: 30px;
  margin-bottom: 8px;
  color: var(--navy);
}

.section-subtitle {
  color: var(--moss);
  font-size: 15.5px;
  margin-bottom: 38px;
}

/* Footer */
footer {
  background-color: var(--ink);
  color: #c9c3b8;
  padding: 58px 0 34px;
  font-size: 14px;
  margin-top: 70px;
}

footer a {
  color: #c9c3b8;
}

footer a:hover {
  color: var(--red);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.1fr 1fr 1fr 1.7fr;
  gap: 36px;
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 13px;
  font-weight: 500;
}

/* Forms */
input, textarea, select {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--gray);
  background: var(--white);
  font-family: inherit;
  font-size: 15px;
  color: var(--navy);
  transition: border-color 0.2s;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--moss);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13.5px;
  color: var(--navy);
}

/* Utility */
.text-moss { color: var(--moss); }
.text-small { font-size: 13.5px; }
.text-meta { font-size: 13px; color: var(--moss); letter-spacing: 0.3px; }

.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ========================================
   RESPONSIVE — MOBILE FIRST
   ======================================== */

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.8fr 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .mobile-menu-btn { display: block; }

  .container { padding: 0 18px; }
  body { font-size: 16px; line-height: 1.78; }

  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  h3 { font-size: 19px; }

  .section { padding: 58px 0; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .btn { padding: 14px 26px; font-size: 14px; }
}