/*
Theme Name: sior Corp
Theme URI: https://sior.co.jp
Author: sior
Author URI: https://sior.co.jp
Description: 眼科を得意とする医療Web制作会社 sior のコーポレートサイト用WordPressテーマ
Version: 1.0.0
License: All Rights Reserved
Text Domain: sior-corp
*/

/* ===== CSS VARIABLES ===== */
:root {
  --color-bg: #F8FAFB;
  --color-cream: #EBF2F7;
  --color-primary: #1B4F72;
  --color-primary-light: #2874A6;
  --color-accent: #5B8FA8;
  --color-accent-light: #C5DAE6;
  --color-text: #1C2833;
  --color-text-light: #5D6D7E;
  --color-white: #FFFFFF;
  --color-border: #D5DDE3;
  --font-serif-jp: 'Noto Serif JP', 'YuMincho', 'Yu Mincho', serif;
  --font-serif-en: 'Cormorant Garamond', serif;
  --font-sans-jp: 'Zen Kaku Gothic New', 'Yu Gothic', sans-serif;
}

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

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

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

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0;
  width: 100%; z-index: 100;
  padding: 0 clamp(20px, 4vw, 60px);
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(224, 220, 212, 0.5);
  transition: all 0.4s ease;
}

.header-logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}

.header-logo-mark {
  font-family: var(--font-serif-en);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.header-logo-sub {
  font-family: var(--font-sans-jp);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  text-decoration: none;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-text);
  position: relative;
  transition: color 0.3s;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.header-nav a:hover { color: var(--color-primary); }
.header-nav a:hover::after { width: 100%; }

.header-nav-en {
  display: block;
  font-family: var(--font-serif-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  margin-top: 2px;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transition: all 0.3s;
}

.header-cta:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.header-cta::after { display: none !important; }

/* ===== HAMBURGER & MOBILE MENU ===== */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
  z-index: 200;
}

.hamburger span {
  display: block;
  width: 100%; height: 1.5px;
  background: var(--color-primary);
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(248, 250, 251, 0.97);
  backdrop-filter: blur(20px);
  z-index: 150;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-menu.active { display: flex; }

.mobile-menu a {
  text-decoration: none;
  font-family: var(--font-serif-jp);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  text-align: center;
}

.mobile-menu a:hover { color: var(--color-accent); }

.mobile-menu-en {
  display: block;
  font-family: var(--font-serif-en);
  font-size: 11px;
  color: var(--color-text-light);
  letter-spacing: 0.12em;
  margin-top: 4px;
}

.mobile-menu .menu-cta {
  margin-top: 16px;
  padding: 14px 44px;
  background: var(--color-primary);
  color: var(--color-white) !important;
  font-family: var(--font-sans-jp) !important;
  font-size: 13px !important;
  border-radius: 2px;
}

/* ===== SHARED SECTION STYLES ===== */
.section {
  padding: clamp(80px, 10vw, 140px) clamp(24px, 6vw, 80px);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: clamp(48px, 6vw, 72px);
}

.section-label {
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  line-height: 1.6;
}

.section-lead {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 2;
  margin-top: 20px;
  max-width: 600px;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 36px;
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27, 79, 114, 0.2);
}

.btn-primary:hover::before { left: 100%; }

.btn-primary-arrow {
  display: inline-block;
  width: 20px; height: 1px;
  background: var(--color-white);
  position: relative;
  transition: width 0.3s;
}

.btn-primary-arrow::after {
  content: '';
  position: absolute;
  right: 0; top: -3px;
  width: 7px; height: 7px;
  border-top: 1px solid var(--color-white);
  border-right: 1px solid var(--color-white);
  transform: rotate(45deg);
}

.btn-primary:hover .btn-primary-arrow { width: 28px; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  background: transparent;
  color: var(--color-text);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  transition: all 0.3s;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transition: all 0.3s;
}

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

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 44px;
  background: var(--color-white);
  color: var(--color-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  border-radius: 2px;
  transition: all 0.3s;
}

.btn-white:hover {
  background: var(--color-cream);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* ===== CTA SECTION ===== */
.cta {
  background: var(--color-primary);
  padding: clamp(60px, 8vw, 100px) clamp(24px, 6vw, 80px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%; right: -10%;
  width: 500px; height: 500px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.05);
}

.cta-label {
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-accent-light);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.cta-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 500;
  color: var(--color-white);
  letter-spacing: 0.06em;
  line-height: 1.6;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.9;
  margin-bottom: 36px;
}

/* ===== FOOTER ===== */
.footer {
  background: #0E1F2F;
  padding: clamp(48px, 6vw, 72px) clamp(24px, 6vw, 80px) 0;
  color: rgba(255,255,255,0.5);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(24px, 4vw, 60px);
  padding-bottom: clamp(40px, 5vw, 60px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand-logo {
  font-family: var(--font-serif-en);
  font-size: 28px;
  font-weight: 400;
  color: var(--color-white);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.footer-brand-sub {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.3);
  margin-bottom: 20px;
}

.footer-brand-desc {
  font-size: 12px;
  line-height: 1.9;
  color: rgba(255,255,255,0.4);
}

.footer-nav-title {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.footer-nav a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  padding: 6px 0;
  transition: color 0.3s;
  letter-spacing: 0.04em;
}

.footer-nav a:hover { color: rgba(255,255,255,0.8); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 11px;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.05em;
}

.footer-bottom a {
  color: rgba(255,255,255,0.25);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-bottom a:hover { color: rgba(255,255,255,0.5); }

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

/* ===== FILTER TABS (共通) ===== */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(40px, 5vw, 60px);
}

.filter-tab {
  padding: 8px 20px;
  font-size: 12px;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background: transparent;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.3s;
  font-family: var(--font-sans-jp);
}

.filter-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-tab.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

/* ===== PAGINATION (共通) ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: clamp(40px, 5vw, 60px);
}

.pagination a, .pagination span {
  width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  font-family: var(--font-serif-en);
  font-size: 14px;
  color: var(--color-text-light);
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.3s;
}

.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes scrollLine {
  0% { top: -50px; }
  50% { top: 50px; }
  100% { top: -50px; }
}

/* ===== RESPONSIVE (HEADER / FOOTER) ===== */
@media (max-width: 1024px) {
  .header-nav { display: none; }
  .hamburger { display: flex; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .filter-tabs { gap: 6px; }
  .filter-tab { padding: 6px 14px; font-size: 11px; }
}