/* ===========================================================
   Shushilan Program — shared stylesheet
   =========================================================== */

:root {
  /* Color */
  --color-primary: #1c4d8f;
  --color-primary-dark: #123564;
  --color-primary-light: #3a7bd5;
  --color-primary-soft: #eaf1fb;
  --color-accent: #c9922e;
  --color-accent-soft: #fbf1de;
  --color-ink: #1f2937;
  --color-text: #46536b;
  --color-muted: #707d92;
  --color-bg: #f4f6fa;
  --color-surface: #ffffff;
  --color-border: #e3e8f0;

  /* Type */
  --font-display: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;

  /* Misc */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(18, 53, 100, 0.06);
  --shadow-md: 0 10px 30px rgba(18, 53, 100, 0.08);
  --shadow-lg: 0 20px 45px rgba(18, 53, 100, 0.14);
  --max-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------------------------------------------------------
   Site header
   --------------------------------------------------------- */

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.brand__logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-ink);
  letter-spacing: 0.01em;
}

.brand__name small {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.7rem;
  color: var(--color-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: 0.95rem;
  font-weight: 600;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text);
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.site-nav a i {
  margin-left: 6px;
  font-size: 0.75em;
}

/* ---------------------------------------------------------
   Hero
   --------------------------------------------------------- */

.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 55%, var(--color-primary-light) 100%);
  color: #fff;
  padding: var(--space-6) 0 var(--space-5);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 88% 18%, rgba(255, 255, 255, 0.12), transparent 45%),
    radial-gradient(circle at 6% 92%, rgba(255, 255, 255, 0.08), transparent 40%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  text-align: center;
}

.hero--page .hero__inner {
  text-align: left;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-3);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-weight: 600;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb .sep {
  opacity: 0.6;
}

.breadcrumb .current {
  color: #fff;
  opacity: 0.9;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(255, 255, 255, 0.12);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: var(--space-3);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.9rem);
  line-height: 1.2;
  max-width: 46rem;
}

.hero--page h1 {
  max-width: 42rem;
}

.hero .lede {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 42rem;
  margin-top: var(--space-2);
}

.hero--home .lede {
  margin-left: auto;
  margin-right: auto;
}

/* ---------------------------------------------------------
   Main / sections
   --------------------------------------------------------- */

main {
  padding: var(--space-5) 0 var(--space-7);
}

.section-intro {
  max-width: 48rem;
  margin: 0 auto var(--space-5);
  text-align: center;
}

.section-intro h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.section-intro p {
  color: var(--color-muted);
  font-size: 1.05rem;
}

/* ---------------------------------------------------------
   Program cards (home)
   --------------------------------------------------------- */

.buttons-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
}

.program-link {
  text-decoration: none;
  display: block;
  border-radius: var(--radius-md);
}

.program-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}

.program-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--space-4);
  right: var(--space-4);
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.program-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.program-card:hover::before {
  transform: scaleX(1);
}

.btn-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 1.3rem;
  transition: background 0.25s ease, color 0.25s ease;
}

.program-card:hover .btn-icon {
  background: var(--color-primary);
  color: #fff;
}

.btn-title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.35;
}

.btn-subtitle {
  font-size: 0.92rem;
  color: var(--color-muted);
  flex-grow: 1;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: var(--space-1);
}

.program-card:hover .btn-cta {
  color: var(--color-accent);
}

.btn-cta i {
  transition: transform 0.25s ease;
}

.program-card:hover .btn-cta i {
  transform: translateX(4px);
}

/* ---------------------------------------------------------
   Content area (program detail pages)
   --------------------------------------------------------- */

.content-area {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-6);
  box-shadow: var(--shadow-md);
}

.paragraph-section {
  margin-bottom: var(--space-5);
}

.paragraph-section:last-child {
  margin-bottom: 0;
}

.paragraph-section h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  padding-left: var(--space-2);
  border-left: 4px solid var(--color-accent);
}

.paragraph-text {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  text-align: left;
}

.paragraph-text:last-child {
  margin-bottom: 0;
}

.lead-text {
  font-size: 1.14rem;
  color: var(--color-ink);
}

.paragraph-list {
  list-style: none;
  margin: var(--space-2) 0 var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.paragraph-list li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 1.02rem;
  color: var(--color-text);
  line-height: 1.7;
}

.paragraph-list li::before {
  content: "\f058";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--color-accent);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-size: 0.9em;
}

.paragraph-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-5) 0;
}

/* ---------------------------------------------------------
   Related programs (bottom of detail pages)
   --------------------------------------------------------- */

.related {
  margin-top: var(--space-6);
}

.related h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
  text-align: center;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.related-card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-3px);
}

.related-card i {
  color: var(--color-primary);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.related-card span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
}

/* ---------------------------------------------------------
   Footer
   --------------------------------------------------------- */

.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.82);
  padding: var(--space-5) 0 var(--space-4);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: 22rem;
}

.footer-brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  background: #fff;
  border-radius: 8px;
  padding: 4px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 0.2rem;
}

.footer-brand strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: #fff;
  display: block;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
}

.footer-links a {
  font-size: 0.9rem;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.78);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-3);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* ---------------------------------------------------------
   Responsive
   --------------------------------------------------------- */

@media (max-width: 860px) {
  .content-area {
    padding: var(--space-5) var(--space-4);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-3);
  }

  .site-header__inner {
    padding: var(--space-2) var(--space-3);
  }

  .brand__name {
    font-size: 1rem;
  }

  .site-nav {
    gap: var(--space-2);
    font-size: 0.85rem;
  }

  .hero {
    padding: var(--space-5) 0 var(--space-4);
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  main {
    padding: var(--space-4) 0 var(--space-6);
  }

  .content-area {
    padding: var(--space-4) var(--space-3);
    border-radius: var(--radius-md);
  }

  .paragraph-text {
    font-size: 1rem;
  }

  .footer-inner {
    flex-direction: column;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}