/*
Theme Name: WiT Japan
Theme URI: https://wit-japan.com
Author: NIPBE Co., Ltd.
Author URI: https://nipbe.com
Description: Website chính thức của cộng đồng WiT Japan – Wisdom in Transformation tại Nhật Bản. Kết nối người Việt tại Nhật thông qua giáo dục nhận thức tận gốc.
Version: 1.0.1
License: GNU General Public License v2 or later
Text Domain: wit-japan
Tags: community, bilingual, vietnamese, japanese, education
*/

/* =========================================================
   CSS CUSTOM PROPERTIES
   ========================================================= */
:root {
  --color-primary:     #1a6e3c;
  --color-primary-dark:#145530;
  --color-primary-light:#e8f5ee;
  --color-secondary:   #0d3b6e;
  --color-accent:      #e8a020;
  --color-accent-light:#fff8ec;
  --color-text:        #1a1a2e;
  --color-text-muted:  #5c5c7a;
  --color-bg:          #ffffff;
  --color-bg-alt:      #f7f9f7;
  --color-border:      #e0e8e2;
  --font-main:         'Noto Sans JP', 'Noto Sans', sans-serif;
  --font-heading:      'Noto Serif JP', 'Georgia', serif;
  --radius-sm:         6px;
  --radius-md:         12px;
  --radius-lg:         24px;
  --shadow-sm:         0 2px 8px rgba(0,0,0,.06);
  --shadow-md:         0 4px 20px rgba(0,0,0,.10);
  --shadow-lg:         0 8px 40px rgba(0,0,0,.14);
  --transition:        .25s 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-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--color-text);
}

ul { list-style: none; }

/* =========================================================
   LAYOUT UTILITIES
   ========================================================= */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.container--wide   { max-width: 1340px; margin: 0 auto; padding: 0 24px; }

.section { padding: 80px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-secondary); color: #fff; }
.section--primary { background: var(--color-primary); color: #fff; }
.section--accent { background: var(--color-accent-light); }

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--color-primary-dark);
  text-align: center;
  margin-bottom: 12px;
}

.section-title--white { color: #fff; }

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1rem;
  max-width: 800px;
  margin: 0 auto 48px;
}

.section-subtitle--white { color: rgba(255,255,255,.8); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,110,60,.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn--white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn--white:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn--accent {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--accent:hover {
  background: #c98a18;
  border-color: #c98a18;
  color: #fff;
  transform: translateY(-2px);
}

.btn--sm { padding: 9px 20px; font-size: .85rem; }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* =========================================================
   CARDS
   ========================================================= */
.card {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

.card__img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.card__body { padding: 24px; }
.card__tag {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 10px;
}
.card__title { font-size: 1.1rem; margin-bottom: 8px; }
.card__excerpt { color: var(--color-text-muted); font-size: .9rem; line-height: 1.6; }

/* =========================================================
   BADGES
   ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 600;
}
.badge--green  { background: var(--color-primary-light); color: var(--color-primary); }
.badge--gold   { background: var(--color-accent-light); color: #b07a10; }
.badge--blue   { background: #e8eef8; color: var(--color-secondary); }

/* =========================================================
   SITE HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-logo img { height: 44px; width: auto; }
.site-logo__text { display: flex; flex-direction: column; }
.site-logo__name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
}
.site-logo__tagline { font-size: .7rem; color: var(--color-text-muted); letter-spacing: .08em; }

.main-nav { display: flex; align-items: center; gap: 2px; flex-wrap: nowrap; }
.main-nav li { list-style: none; display: flex; align-items: center; padding: 0; margin: 0; }

.main-nav a {
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.header-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

/* =========================================================
   HERO SECTION
   ========================================================= */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0a3520 0%, #1a6e3c 50%, #0d3b6e 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(232,160,32,.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,.07) 0%, transparent 50%);
}

.hero__pattern {
  position: absolute;
  inset: 0;
  opacity: .04;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero__content {
  position: relative;
  z-index: 1;
  color: #fff;
  max-width: 700px;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.9);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .06em;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #fff;
}

.hero__title span { color: var(--color-accent); }

.hero__jp {
  font-size: 1.05rem;
  color: rgba(255,255,255,.65);
  font-style: italic;
  margin-bottom: 20px;
  letter-spacing: .04em;
}

.hero__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 36px;
  max-width: 560px;
  line-height: 1.75;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__stats {
  position: absolute;
  bottom: 40px;
  right: 0;
  display: flex;
  gap: 32px;
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-md);
  padding: 20px 32px;
}

.hero__stat-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent);
}
.hero__stat-label { font-size: .78rem; color: rgba(255,255,255,.7); }

/* =========================================================
   INTRO STRIP
   ========================================================= */
.intro-strip {
  background: var(--color-primary);
  color: #fff;
  padding: 20px 0;
  text-align: center;
  font-size: .95rem;
  font-weight: 500;
  letter-spacing: .03em;
}
.intro-strip strong { color: var(--color-accent); }

/* =========================================================
   VALUE CARDS (3-COL ICON)
   ========================================================= */
.value-card {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--color-primary);
  transition: all var(--transition);
}
.value-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.value-card__icon { font-size: 2.4rem; margin-bottom: 16px; }
.value-card__title { font-size: 1.1rem; color: var(--color-primary-dark); margin-bottom: 10px; }
.value-card__text  { font-size: .9rem; color: var(--color-text-muted); line-height: 1.65; }

/* =========================================================
   ACTIVITY CARDS
   ========================================================= */
.activity-card {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border-left: 5px solid var(--color-primary);
  transition: all var(--transition);
}
.activity-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.activity-card__header {
  background: var(--color-primary-light);
  padding: 20px 24px 16px;
}
.activity-card__icon { font-size: 2rem; margin-bottom: 8px; }
.activity-card__title { font-size: 1.05rem; font-weight: 700; color: var(--color-primary-dark); }
.activity-card__body { padding: 20px 24px 24px; }
.activity-card__desc { font-size: .9rem; color: var(--color-text-muted); margin-bottom: 16px; line-height: 1.65; }
.activity-card__meta { font-size: .82rem; color: var(--color-text-muted); margin-bottom: 20px; }
.activity-card__meta span { display: block; margin-bottom: 4px; }

/* =========================================================
   MENTOR CARD
   ========================================================= */
.mentor-card {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  text-align: center;
  transition: all var(--transition);
}
.mentor-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
.mentor-card__img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--color-primary-light);
}
.mentor-card__avatar {
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--color-primary-light), #c8e8d8);
}
.mentor-card__body { padding: 20px; }
.mentor-card__name { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.mentor-card__role { font-size: .82rem; color: var(--color-primary); font-weight: 600; margin-bottom: 8px; }
.mentor-card__bio  { font-size: .85rem; color: var(--color-text-muted); line-height: 1.55; margin-bottom: 16px; }
.mentor-card__tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }

/* =========================================================
   CONCEPT CARD
   ========================================================= */
.concept-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.concept-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}
.concept-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--color-primary); }
.concept-card__vi  { font-size: 1.15rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: 4px; }
.concept-card__jp  { font-size: .85rem; color: var(--color-secondary); margin-bottom: 12px; font-style: italic; }
.concept-card__key { font-size: .82rem; font-weight: 700; color: var(--color-accent); margin-bottom: 10px; }
.concept-card__desc { font-size: .88rem; color: var(--color-text-muted); line-height: 1.65; margin-bottom: 14px; }
.concept-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* =========================================================
   CTA BAND
   ========================================================= */
.cta-band {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  color: #fff;
  text-align: center;
  padding: 72px 0;
}
.cta-band__title { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; color: #fff; }
.cta-band__desc  { font-size: 1rem; color: rgba(255,255,255,.8); margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-band__note  { font-size: .82rem; color: rgba(255,255,255,.55); margin-top: 16px; }
.cta-band__btns  { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* =========================================================
   PAGE HERO (inner pages)
   ========================================================= */
.page-hero {
  background: linear-gradient(135deg, #0a3520 0%, #1a6e3c 50%, #0d3b6e 100%);
  color: #fff;
  padding: 72px 0 60px;
  text-align: center;
}
.page-hero__kicker {
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 12px;
}
.page-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: #fff;
  margin-bottom: 14px;
}
.page-hero__jp { font-size: 1rem; color: rgba(255,255,255,.6); font-style: italic; margin-bottom: 16px; }
.page-hero__desc { font-size: 1rem; color: rgba(255,255,255,.8); max-width: 560px; margin: 0 auto; }

/* =========================================================
   BLOG POSTS
   ========================================================= */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.post-card { background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); overflow: hidden; transition: all var(--transition); }
.post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.post-card__img { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: var(--color-primary-light); }
.post-card__body { padding: 20px; }
.post-card__meta { display: flex; align-items: center; gap: 10px; font-size: .78rem; color: var(--color-text-muted); margin-bottom: 8px; }
.post-card__title { font-size: 1rem; margin-bottom: 8px; line-height: 1.45; }
.post-card__title a { color: var(--color-text); }
.post-card__title a:hover { color: var(--color-primary); }
.post-card__excerpt { font-size: .85rem; color: var(--color-text-muted); line-height: 1.6; margin-bottom: 16px; }

/* =========================================================
   SITE FOOTER
   ========================================================= */
.site-footer {
  background: #0d1f0f;
  color: rgba(255,255,255,.75);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  text-decoration: none;
}
.footer-brand__logo img { height: 40px; filter: brightness(0) invert(1); }
.footer-brand__name { font-family: var(--font-heading); font-size: 1.1rem; color: #fff; font-weight: 700; }
.footer-brand__tagline { font-size: .82rem; color: rgba(255,255,255,.5); margin-bottom: 16px; }
.footer-brand__desc { font-size: .85rem; line-height: 1.7; margin-bottom: 20px; color: rgba(255,255,255,.6); }

.footer-social { display: flex; gap: 10px; }
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.7);
  font-size: .85rem;
  transition: all var(--transition);
  text-decoration: none;
}
.footer-social a:hover { background: var(--color-primary); color: #fff; }

.footer-col__title { font-size: .9rem; font-weight: 700; color: #fff; margin-bottom: 16px; text-transform: uppercase; letter-spacing: .06em; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: .85rem; color: rgba(255,255,255,.6); transition: color var(--transition); text-decoration: none; }
.footer-col ul li a:hover { color: var(--color-accent); }

.footer-contact li { display: flex; gap: 10px; margin-bottom: 10px; font-size: .85rem; }
.footer-contact li span:first-child { color: var(--color-accent); }
.footer-contact a { color: rgba(255,255,255,.6); text-decoration: none; }
.footer-contact a:hover { color: var(--color-accent); }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  color: rgba(255,255,255,.4);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom a { color: rgba(255,255,255,.4); }
.footer-bottom a:hover { color: rgba(255,255,255,.7); }

/* =========================================================
   ABOUT PAGE
   ========================================================= */
.about-wit-box {
  background: var(--color-primary-light);
  border-left: 5px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 28px 32px;
  margin: 32px 0;
}
.about-wit-box blockquote {
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  border: none;
  padding: 0;
}
.about-wit-box cite { display: block; font-size: .82rem; color: var(--color-text-muted); margin-top: 8px; }

.rich-value {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 28px 0;
}
.rich-value__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 16px;
  border: 1px solid var(--color-border);
}
.rich-value__icon { font-size: 1.5rem; flex-shrink: 0; }
.rich-value__label { font-size: .88rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: 2px; }
.rich-value__desc  { font-size: .82rem; color: var(--color-text-muted); }

.org-info-box {
  background: var(--color-secondary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
}
.org-info-box table { width: 100%; border-collapse: collapse; }
.org-info-box td { padding: 8px 0; font-size: .88rem; vertical-align: top; }
.org-info-box td:first-child { width: 140px; color: rgba(255,255,255,.6); font-weight: 600; }
.org-info-box td:last-child { color: rgba(255,255,255,.9); }
.org-info-box tr:not(:last-child) td { border-bottom: 1px solid rgba(255,255,255,.1); }

/* =========================================================
   CONTACT FORM
   ========================================================= */
.contact-form .form-group { margin-bottom: 20px; }
.contact-form label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; color: var(--color-text); }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: .92rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,110,60,.1);
}
.contact-form textarea { resize: vertical; min-height: 130px; }

/* =========================================================
   ACCORDION (FAQ)
   ========================================================= */
.accordion-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}
.accordion-btn {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 24px;
  font-family: var(--font-main);
  font-size: .95rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background var(--transition);
}
.accordion-btn:hover { background: var(--color-bg-alt); }
.accordion-btn.active { background: var(--color-primary-light); color: var(--color-primary-dark); }
.accordion-btn .icon { transition: transform var(--transition); font-style: normal; flex-shrink: 0; }
.accordion-btn.active .icon { transform: rotate(45deg); }
.accordion-body { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; }
.accordion-body.open { max-height: 600px; padding: 0 24px 20px; }
.accordion-body p { font-size: .9rem; color: var(--color-text-muted); line-height: 1.7; }

/* =========================================================
   BREADCRUMB
   ========================================================= */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  color: rgba(255,255,255,.55);
  margin-bottom: 16px;
}
.breadcrumb a { color: rgba(255,255,255,.55); text-decoration: none; }
.breadcrumb a:hover { color: rgba(255,255,255,.9); }
.breadcrumb span { color: rgba(255,255,255,.3); }

/* =========================================================
   SINGLE POST
   ========================================================= */
.single-post-content {
  max-width: 740px;
  margin: 0 auto;
}
.single-post-content h2,
.single-post-content h3 { color: var(--color-primary-dark); margin: 28px 0 14px; }
.single-post-content p { margin-bottom: 16px; line-height: 1.8; }
.single-post-content ul, .single-post-content ol { margin: 16px 0 16px 24px; }
.single-post-content li { margin-bottom: 6px; }
.single-post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 12px 20px;
  margin: 24px 0;
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

/* =========================================================
   BACK TO TOP
   ========================================================= */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 900;
  border: none;
  text-decoration: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); color: #fff; }

/* =========================================================
   SECTION DIVIDER
   ========================================================= */
.wave-divider { display: block; width: 100%; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 992px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .post-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero__stats { position: static; margin-top: 36px; }
  .hero { min-height: auto; padding: 72px 0; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }
  .header-cta .btn--outline { display: none; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .post-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .rich-value { grid-template-columns: 1fr; }
  .hero__title { font-size: 2rem; }
  .hero__stats { flex-direction: column; gap: 16px; }
  .hero__cta { flex-direction: column; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .btn { padding: 11px 22px; }
  .btn--lg { padding: 13px 28px; font-size: .95rem; }
}