/* ===========================
   KURO COFFEE TOKYO - style.css
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

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

:root {
  --white: #ffffff;
  --off-white: #f7f8fa;
  --light-blue: #dce8f0;
  --mid-blue: #a8c4d4;
  --dark-blue: #2a4d62;
  --black: #0d0d0d;
  --gray-100: #f0f2f4;
  --gray-300: #c8d0d8;
  --gray-500: #7a8a96;
  --gray-700: #3a4a54;
  --accent: #1a3a4f;
  --font-en: 'Inter', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --transition: 0.3s ease;
  --radius: 4px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.12);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-jp);
  background: var(--white);
  color: var(--black);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

/* ── Typography ── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-en);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 0.4rem;
  color: var(--black);
}

.section-subtitle {
  font-family: var(--font-jp);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--gray-500);
  letter-spacing: 0.05em;
  margin-bottom: 2.5rem;
}

/* ── Layout ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.btn-primary {
  background: var(--black);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--black);
  border: 1.5px solid var(--black);
}

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

.btn-light {
  background: var(--white);
  color: var(--black);
}

.btn-light:hover {
  background: var(--light-blue);
}

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  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: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-main {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--black);
}

.logo-sub {
  font-family: var(--font-jp);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--gray-500);
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-menu a {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-700);
  position: relative;
  padding-bottom: 4px;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--black);
  transition: width var(--transition);
}

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

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--black);
}

.header-icons {
  display: flex;
  align-items: center;
  gap: 20px;
}

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  color: var(--gray-700);
  transition: color var(--transition);
  position: relative;
}

.icon-btn:hover {
  color: var(--black);
}

.cart-count {
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  background: var(--dark-blue);
  color: white;
  font-size: 9px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--black);
  transition: all var(--transition);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  z-index: 999;
  padding: 40px 24px;
  flex-direction: column;
  gap: 28px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--black);
  border-bottom: 1px solid var(--gray-100);
  padding-bottom: 20px;
}

/* ── Footer ── */
.site-footer {
  background: var(--black);
  color: var(--white);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-main {
  color: var(--white);
  font-size: 1.3rem;
}

.footer-brand .logo-sub {
  color: var(--gray-300);
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--gray-300);
  margin-top: 16px;
  line-height: 1.8;
  max-width: 260px;
}

.footer-col h4 {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-300);
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: var(--gray-500);
  letter-spacing: 0.05em;
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  border-color: var(--white);
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

/* ── Fade-in Animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ── Card base ── */
.card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

/* ── Page Hero (inner pages) ── */
.page-hero {
  padding: 140px 0 60px;
  background: var(--light-blue);
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 0.5rem;
}

.page-hero p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-bottom: 32px;
  font-family: var(--font-en);
}

.breadcrumb a:hover { color: var(--black); }
.breadcrumb span { color: var(--gray-300); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .nav-menu { display: none; }
  .hamburger { display: flex; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}