/*
Theme Name: OGATA Theme bk
Theme URI: https://ogata.com
Author: Your Name
Description: A refined, minimal theme inspired by OGATA's aesthetic
Version: 1.0
License: GNU General Public License v2 or later
Text Domain: ogata-theme
*/

/* ========================================
   CSS Variables
======================================== */
:root {
  --color-bg: #f7f6f3;
  --color-bg-alt: #edeae4;
  --color-text: #2c2c2c;
  --color-text-light: #6b6b6b;
  --color-text-muted: #999;
  --color-white: #fff;
  --color-black: #1a1a1a;
  --color-border: #d8d5ce;
  
  --font-serif: 'Times New Roman', 'YuMincho', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
  --font-sans: 'Helvetica Neue', 'Arial', 'Hiragino Kaku Gothic ProN', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  --spacing-xxl: 12rem;
  
  --max-width: 1200px;
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.3s ease;
}

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

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

body {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Page Loading Animation */
body.loading {
  overflow: hidden;
}

.page-loader {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 1s ease, visibility 1s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-logo {
  font-family: var(--font-serif);
  font-size: 2rem;
  letter-spacing: 0.5em;
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

a:hover {
  opacity: 0.6;
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: 1.4;
}

/* ========================================
   Scroll Animations
======================================== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.fade-in {
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
}

.stagger-item {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.stagger-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Layout
======================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

/* ========================================
   Header
======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  transition: background var(--transition-medium), padding var(--transition-medium);
}

.site-header.scrolled {
  background: rgba(247, 246, 243, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--spacing-xs) var(--spacing-md);
}

.header-left {
  display: flex;
  gap: var(--spacing-md);
}

.header-nav a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.5em;
  text-transform: uppercase;
}

.header-right {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.header-right a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
}

.lang-switch span {
  color: var(--color-text-muted);
}

/* ========================================
   Hero Section
======================================== */
.hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.hero-slider {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 2s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-corner-image {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 200px;
  opacity: 0;
  animation: fadeIn 1.5s ease 0.5s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* ========================================
   Introduction Section
======================================== */
.intro {
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.intro-text {
  font-size: 1.125rem;
  line-height: 2.2;
  max-width: 600px;
  margin: 0 auto;
  letter-spacing: 0.05em;
}

.intro-text-en {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--color-text-light);
  margin-top: var(--spacing-sm);
}

/* ========================================
   Places Section
======================================== */
.places {
  padding: var(--spacing-xl) 0;
}

.section-header {
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 1.75rem;
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.section-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  max-width: 500px;
  line-height: 1.9;
}

.section-link {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin-top: var(--spacing-sm);
  display: inline-block;
}

.places-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--spacing-sm);
}

.place-card {
  overflow: hidden;
}

.place-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.place-card:hover img {
  transform: scale(1.03);
}

.place-card.large img {
  aspect-ratio: 3/4;
}

/* ========================================
   People Section
======================================== */
.people {
  padding: var(--spacing-xl) 0;
  background: var(--color-bg);
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg) var(--spacing-md);
}

.person-card {
  text-align: center;
}

.person-image {
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.person-image img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter var(--transition-medium), transform var(--transition-slow);
}

.person-card:hover .person-image img {
  filter: grayscale(0%);
  transform: scale(1.02);
}

.person-name {
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.person-role {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ========================================
   Philosophy Section
======================================== */
.philosophy {
  padding: var(--spacing-xl) 0;
}

.philosophy-image {
  width: 100%;
  max-width: 900px;
  margin: 0 auto var(--spacing-lg);
}

.philosophy-image img {
  width: 100%;
}

.philosophy-caption {
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

.philosophy-text {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
  text-align: justify;
  font-size: 0.9375rem;
  line-height: 2;
  letter-spacing: 0.02em;
}

/* ========================================
   Quote Section
======================================== */
.quote-section {
  padding: var(--spacing-xxl) 0;
  background: var(--color-bg-alt);
}

.quote-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.quote-image img {
  width: 100%;
}

.quote-content {
  padding: var(--spacing-lg);
}

.quote-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.quote-text {
  font-size: 1rem;
  line-height: 2;
  font-style: italic;
}

/* ========================================
   Values Section
======================================== */
.values {
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.values-title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.values-text {
  font-size: 0.9375rem;
  line-height: 2.2;
  max-width: 700px;
  margin: 0 auto;
}

/* ========================================
   Pillars Section
======================================== */
.pillars {
  padding: var(--spacing-xl) 0;
}

.pillars-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.pillars-title {
  font-size: 1.5rem;
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.pillars-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  max-width: 500px;
  margin: 0 auto;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.pillar-card {
  text-align: center;
}

.pillar-image {
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.pillar-image img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.pillar-card:hover .pillar-image img {
  transform: scale(1.03);
}

.pillar-name {
  font-size: 0.875rem;
  font-style: italic;
}

/* ========================================
   Full Image Section
======================================== */
.full-image {
  width: 100%;
  height: 60vh;
  overflow: hidden;
}

.full-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========================================
   Footer
======================================== */
.site-footer {
  padding: var(--spacing-xl) 0 var(--spacing-md);
  text-align: center;
  background: var(--color-bg);
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.3em;
  margin-bottom: var(--spacing-lg);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-nav a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-bottom {
  font-family: var(--font-sans);
  font-size: 0.625rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ========================================
   Responsive
======================================== */
@media (max-width: 1024px) {
  .places-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .people-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .quote-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
  }
  
  .site-logo {
    position: relative;
    left: auto;
    transform: none;
    font-size: 1.25rem;
  }
  
  .header-left,
  .header-right {
    display: none;
  }
  
  .site-header {
    justify-content: center;
  }
  
  .places-grid,
  .people-grid,
  .pillars-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-corner-image {
    width: 120px;
  }
  
  .intro-text {
    font-size: 1rem;
  }
}