/**
 * NextStep International — shared site styles (all pages)
 * Load after page-specific inline CSS for enhancements.
 */

:root {
  --navy: #0a1f44;
  --navy2: #1a3a6e;
  --navylight: #eef3fb;
  --gold: #b8960c;
  --goldlight: #fdf6e3;
  --goldbright: #d4a843;
  --ink: #0d1b2a;
  --soft: #3d4f63;
  --muted: #6b7280;
  --bg: #f7f9fc;
  --surface: #fff;
  --border: #e5e7eb;
  --green: #16a34a;
  --wa: #25d366;
  --max: 1140px;
  --read: 680px;
  --r: 14px;
  --rsm: 10px;
  --serif: "DM Serif Display", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --shadow-sm: 0 2px 8px rgba(10, 31, 68, 0.06);
  --shadow-md: 0 12px 40px rgba(10, 31, 68, 0.1);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --mobile-bar-h: 64px;
}

/* ─── Base polish ─── */
.ns-site {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.ns-site :focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.45);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 9999;
  padding: 0.6rem 1rem;
  background: var(--navy);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--rsm);
  text-decoration: none;
}
.skip-link:focus {
  top: 12px;
}

/* Reading progress (articles) */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 500;
  background: linear-gradient(90deg, var(--goldbright), var(--gold));
  transition: width 0.12s linear;
  pointer-events: none;
}

/* ─── Subpage header ─── */
.ns-site .site-header {
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--border);
}

.ns-site .hdr {
  max-width: var(--max);
  padding-left: clamp(16px, 4vw, 28px);
  padding-right: clamp(16px, 4vw, 28px);
  min-height: 68px;
  height: auto;
}

.ns-site .brand img {
  height: clamp(34px, 8vw, 40px);
  width: auto;
}

.ns-site .hdr-back {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--rsm);
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.ns-site .hdr-back:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

/* Simple pages (about, programs) */
.ns-site header.hdr:not(.site-header *) {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px clamp(16px, 4vw, 24px);
  flex-wrap: wrap;
  gap: 12px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 400;
  backdrop-filter: blur(10px);
}

.ns-site .logo {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 400;
}

.ns-site .nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  font-size: 0.8125rem;
}

.ns-site .nav a {
  padding: 8px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--soft);
  font-weight: 600;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
.ns-site .nav a:hover,
.ns-site .nav a[aria-current="page"] {
  background: var(--navylight);
  color: var(--navy);
  text-decoration: none;
}

/* ─── Page heroes ─── */
.ns-site .page-hero,
.ns-site .hero:not(.site-header *) {
  padding: clamp(2.5rem, 7vw, 3.5rem) clamp(1rem, 4vw, 1.5rem);
}

.ns-site .page-hero h1,
.ns-site .hero h1 {
  letter-spacing: -0.02em;
}

.ns-site .gold-line {
  border-radius: 2px;
}

/* ─── Article layout — student-friendly reading ─── */
.ns-site .article-wrap {
  max-width: var(--max);
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 4vw, 1.25rem) clamp(4rem, 10vw, 5rem);
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.ns-site .article-hero {
  border-radius: calc(var(--r) + 4px);
  padding: clamp(1.75rem, 5vw, 2.75rem) clamp(1.25rem, 4vw, 2.25rem);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.ns-site .article-hero::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.15), transparent 70%);
  pointer-events: none;
}

.ns-site .article-title {
  letter-spacing: -0.02em;
}

.ns-site article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: clamp(1.25rem, 4vw, 2rem) clamp(1.25rem, 4vw, 2.25rem);
  box-shadow: var(--shadow-sm);
  font-size: 1.0625rem;
  line-height: 1.82;
}

.ns-site article > p:first-of-type {
  font-size: 1.125rem;
  color: var(--ink);
  line-height: 1.75;
}

.ns-site article h2 {
  scroll-margin-top: 88px;
  margin-top: 2.25rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--navylight);
}

.ns-site article h3 {
  color: var(--navy);
  margin-top: 1.5rem;
}

.ns-site article a {
  color: var(--navy);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(212, 168, 67, 0.5);
  text-underline-offset: 3px;
}
.ns-site article a:hover {
  text-decoration-color: var(--goldbright);
}

.ns-site .article-tags {
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.ns-site .atag {
  transition: background 0.15s, transform 0.15s;
}
.ns-site .atag:hover {
  background: var(--goldlight);
  transform: translateY(-1px);
}

.ns-site .info-box,
.ns-site .warn-box {
  border-radius: var(--rsm);
  padding: 1rem 1.125rem;
  margin: 1.5rem 0;
}

.ns-site .info-box {
  background: linear-gradient(135deg, var(--navylight), #fff);
  border-left: 4px solid var(--navy);
}

.ns-site .warn-box {
  background: linear-gradient(135deg, var(--goldlight), #fff);
  border-left: 4px solid var(--goldbright);
}

.ns-site .cta-box {
  border-radius: calc(var(--r) + 2px);
  padding: clamp(1.5rem, 4vw, 2rem);
  box-shadow: var(--shadow-md);
  margin: 2.5rem 0;
}

.ns-site .cta-box .btn {
  min-height: 48px;
  box-shadow: 0 6px 20px rgba(184, 150, 12, 0.35);
}

.ns-site .table-wrap {
  border-radius: var(--rsm);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.ns-site table th:first-child,
.ns-site table td:first-child {
  border-radius: 0;
}

/* Sidebar desktop */
.ns-site .sidebar {
  top: 84px;
}

.ns-site .sidebar-card {
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s;
}
.ns-site .sidebar-card:hover {
  box-shadow: var(--shadow-md);
}

.ns-site .sidebar-card li a {
  text-decoration: none;
  display: block;
  padding: 2px 0;
}
.ns-site .sidebar-card li a:hover {
  color: var(--gold);
}

.ns-site .sidebar-cta {
  box-shadow: var(--shadow-md);
}

/* Mobile article tools */
.article-tools {
  display: none;
  margin-bottom: 1rem;
  gap: 10px;
}
.article-tools-btn {
  flex: 1;
  min-height: 44px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  border-radius: var(--rsm);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--navy);
  cursor: pointer;
}

.sidebar-sheet {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(10, 17, 40, 0.5);
  backdrop-filter: blur(4px);
  padding: 1rem;
  align-items: flex-end;
}
.sidebar-sheet.open {
  display: flex;
}
.sidebar-sheet-panel {
  width: 100%;
  max-height: 70vh;
  overflow-y: auto;
  background: #fff;
  border-radius: 16px 16px 0 0;
  padding: 1.25rem;
  animation: sheetUp 0.3s var(--ease);
}
@keyframes sheetUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@media (max-width: 768px) {
  .ns-site .article-wrap {
    grid-template-columns: 1fr;
  }
  .ns-site .sidebar {
    display: none;
  }
  .article-tools {
    display: flex;
    grid-column: 1 / -1;
  }
}

/* ─── Blog index ─── */
.ns-site .wrap {
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 4vw, 1.25rem) clamp(4rem, 10vw, 5rem);
}

.ns-site .blog-grid {
  gap: clamp(1rem, 3vw, 1.5rem);
}

.ns-site .blog-card {
  border-radius: calc(var(--r) + 2px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.ns-site .blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.ns-site .blog-card:first-child {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .ns-site .blog-card:first-child {
    grid-template-columns: 1.1fr 1fr;
  }
  .ns-site .blog-card:first-child .card-img {
    min-height: 220px;
    height: auto;
  }
}

.ns-site .card-img {
  background: linear-gradient(145deg, var(--navylight), #dce8f8);
  min-height: 180px;
}

.ns-site .card-body {
  padding: clamp(1rem, 3vw, 1.35rem);
}

.ns-site .card-title {
  transition: color 0.15s;
}
.ns-site .blog-card:hover .card-title {
  color: var(--navy);
}

.ns-site .tags-bar {
  scrollbar-width: none;
}
.ns-site .tags-bar::-webkit-scrollbar {
  display: none;
}

.ns-site .tag-btn {
  min-height: 36px;
}

/* ─── Simple content pages ─── */
.ns-site main {
  padding: clamp(1.5rem, 4vw, 2rem) clamp(1rem, 4vw, 1.5rem) clamp(3rem, 8vw, 4rem);
}

.ns-site main .card,
.ns-site .card {
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
  border: 1px solid var(--border);
}
.ns-site main .card:hover,
.ns-site .card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.ns-site .btn,
.ns-site .cta .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--rsm);
  transition: transform 0.15s, box-shadow 0.15s;
  text-decoration: none;
}
.ns-site .btn:active {
  transform: scale(0.98);
}

/* ─── Apply / forms ─── */
.ns-site .page-wrap {
  padding: clamp(1.25rem, 4vw, 2rem) clamp(1rem, 4vw, 1.25rem) clamp(4rem, 10vw, 5rem);
}

.ns-site .form-card {
  border-radius: calc(var(--r) + 2px);
  box-shadow: var(--shadow-md);
}

.ns-site input:focus,
.ns-site select:focus,
.ns-site textarea:focus {
  border-color: var(--navy) !important;
  box-shadow: 0 0 0 3px rgba(10, 31, 68, 0.1) !important;
}

/* ─── Site footer (simple pages) ─── */
.ns-site footer:not(.footer) {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 1.5rem);
  border-top: 1px solid var(--border);
  background: #fff;
}

.ns-site footer nav a {
  text-decoration: none;
  color: var(--soft);
  font-weight: 600;
  padding: 4px 0;
}
.ns-site footer nav a:hover {
  color: var(--navy);
}

/* ─── WhatsApp float ─── */
.ns-site .wa-float {
  bottom: calc(88px + env(safe-area-inset-bottom));
}
@media (min-width: 768px) {
  .ns-site .wa-float {
    bottom: calc(24px + env(safe-area-inset-bottom));
  }
}

/* ─── Mobile sticky CTA (subpages) ─── */
.ns-mobile-bar {
  display: flex;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 450;
  padding: 10px clamp(12px, 3vw, 16px);
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--border);
  box-shadow: 0 -8px 32px rgba(10, 31, 68, 0.08);
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.ns-mobile-bar.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.ns-mobile-bar a {
  flex: 1;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--rsm);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
}
.ns-mobile-bar .bar-apply {
  background: var(--navy);
  color: #fff;
}
.ns-mobile-bar .bar-wa {
  background: var(--wa);
  color: #fff;
  flex: 0 0 48px;
  padding: 0 14px;
}
@media (min-width: 768px) {
  .ns-mobile-bar {
    display: none !important;
  }
}

.ns-site.has-mobile-bar {
  padding-bottom: calc(var(--mobile-bar-h) + env(safe-area-inset-bottom));
}
@media (min-width: 768px) {
  .ns-site.has-mobile-bar {
    padding-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .read-progress,
  .blog-card,
  .card,
  .ns-mobile-bar {
    transition: none !important;
  }
}