/* =========================================================
   Nanbi CMS — Main Stylesheet
   Modern SaaS design: glassmorphism, dark/light mode
   ========================================================= */

/* ── Variables ──────────────────────────────────────────── */
:root {
  --color-primary:       #6366f1;
  --color-primary-dark:  #4f46e5;
  --color-primary-light: #a5b4fc;
  --color-secondary:     #8b5cf6;
  --color-accent:        #06b6d4;
  --color-success:       #10b981;
  --color-warning:       #f59e0b;
  --color-danger:        #ef4444;

  --bg-body:          #ffffff;
  --bg-card:          #f8fafc;
  --bg-card-hover:    #f1f5f9;
  --bg-nav:           rgba(255,255,255,0.85);
  --bg-glass:         rgba(255,255,255,0.7);
  --bg-hero:          #f0f4ff;

  --text-primary:     #0f172a;
  --text-secondary:   #475569;
  --text-muted:       #94a3b8;
  --text-inverse:     #ffffff;

  --border-color:     #e2e8f0;
  --shadow-sm:        0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:        0 4px 24px rgba(0,0,0,.08);
  --shadow-lg:        0 20px 60px rgba(0,0,0,.12);
  --shadow-glow:      0 0 40px rgba(99,102,241,.25);

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

[data-bs-theme="dark"] {
  --bg-body:       #060a14;
  --bg-card:       #0d1526;
  --bg-card-hover: #111d32;
  --bg-nav:        rgba(6,10,20,0.85);
  --bg-glass:      rgba(13,21,38,0.7);
  --bg-hero:       #0a0f1e;
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #475569;
  --border-color:  #1e293b;
  --shadow-glow:   0 0 60px rgba(99,102,241,.35);
}

/* ── Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Typography ─────────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: -0.04em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.75rem); letter-spacing: -0.03em; }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.9rem); letter-spacing: -0.02em; }
h4 { font-size: 1.25rem; }
p  { color: var(--text-secondary); }

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Navbar ─────────────────────────────────────────────── */
.navbar-site {
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: .9rem 0;
  transition: all var(--transition);
}
.navbar-site.scrolled {
  padding: .6rem 0;
  box-shadow: var(--shadow-md);
}
.navbar-brand .brand-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  font-size: .9rem;
  padding: .4rem .75rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary) !important;
  background: var(--bg-card);
}
.btn-nav {
  padding: .45rem 1.25rem !important;
  font-size: .9rem !important;
  font-weight: 600 !important;
}
.btn-theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: .4rem .5rem;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  transition: all var(--transition);
}
.btn-theme-toggle:hover { color: var(--text-primary); background: var(--bg-card); }
[data-bs-theme="light"] .icon-moon { display: none; }
[data-bs-theme="dark"]  .icon-sun  { display: none; }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: 0 4px 15px rgba(99,102,241,.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark), #7c3aed);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99,102,241,.4);
}
.btn-outline-primary {
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn-ghost {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-ghost:hover { background: var(--bg-card-hover); }
.btn-lg { padding: .85rem 2rem; font-size: 1rem; }
.btn-sm { padding: .4rem 1rem; font-size: .85rem; }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.card:hover { border-color: var(--color-primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.15);
}
.card-body { padding: 1.75rem; }

/* ── Section ────────────────────────────────────────────── */
section { padding: 7rem 0; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(99,102,241,.1);
  color: var(--color-primary);
  border: 1px solid rgba(99,102,241,.2);
  border-radius: 100px;
  padding: .35rem 1rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.section-header { max-width: 640px; margin: 0 auto 4rem; text-align: center; }
.section-header p { margin-top: .75rem; font-size: 1.1rem; }

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-hero);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -20%, rgba(99,102,241,.2) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: .3;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(99,102,241,.1);
  border: 1px solid rgba(99,102,241,.25);
  border-radius: 100px;
  padding: .4rem 1rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}
.hero-title { margin-bottom: 1.25rem; }
.hero-subtitle { font-size: 1.2rem; margin-bottom: 2.25rem; max-width: 520px; }
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-screenshot {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  max-width: 100%;
  animation: float 6s ease-in-out infinite;
}
.hero-screenshot-secondary {
  position: absolute;
  width: 45%;
  bottom: -5%;
  right: -5%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: float 6s ease-in-out infinite 1.5s;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

/* ── Features ───────────────────────────────────────────── */
.feature-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  height: 100%;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover { border-color: var(--color-primary-light); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, rgba(99,102,241,.15), rgba(139,92,246,.15));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}
.feature-icon img { width: 28px; height: 28px; object-fit: contain; }
.feature-card h4 { font-size: 1.1rem; margin-bottom: .5rem; }
.feature-card p  { font-size: .9rem; margin: 0; }

/* ── Statistics ─────────────────────────────────────────── */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
}
.stats-section p { color: rgba(255,255,255,.8); }
.stat-number {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
}
.stat-label { font-size: .95rem; opacity: .85; margin-top: .25rem; }

/* ── Screenshots ────────────────────────────────────────── */
.screenshot-carousel .carousel-item img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: transform var(--transition);
}
.screenshot-carousel .carousel-item img:hover { transform: scale(1.02); }

/* Lightbox */
.lightbox-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.9);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.lightbox-overlay.active { opacity: 1; pointer-events: all; }
.lightbox-overlay img {
  max-width: 90vw; max-height: 90vh;
  border-radius: var(--radius-lg);
  animation: zoomIn .2s ease;
}
@keyframes zoomIn { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.lightbox-close {
  position: fixed; top: 1.5rem; right: 1.5rem;
  width: 44px; height: 44px;
  background: rgba(255,255,255,.15); border: none; border-radius: 50%;
  color: #fff; font-size: 1.2rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

/* ── Testimonials ───────────────────────────────────────── */
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.testimonial-stars { color: #f59e0b; letter-spacing: .1em; }
.testimonial-text { font-style: italic; color: var(--text-primary); margin: 1rem 0; }
.testimonial-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  object-fit: cover;
}
.verified-badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  background: rgba(16,185,129,.1);
  color: var(--color-success);
  border-radius: 100px;
  padding: .2rem .65rem;
  font-size: .75rem;
  font-weight: 600;
}

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-search { max-width: 480px; margin: 0 auto 2.5rem; }
.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md) !important;
  margin-bottom: .75rem;
  overflow: hidden;
}
.accordion-button {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  font-size: .95rem;
  padding: 1.25rem 1.5rem;
}
.accordion-button:not(.collapsed) {
  background: var(--bg-card);
  color: var(--color-primary);
  box-shadow: none;
}
.accordion-button::after { filter: none; }
.accordion-body { padding: 0 1.5rem 1.25rem; font-size: .9rem; color: var(--text-secondary); }

/* ── Blog ────────────────────────────────────────────────── */
.blog-card { height: 100%; }
.blog-card .card-img-top {
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.blog-card .card-body { padding: 1.5rem; }
.blog-meta { display: flex; gap: 1rem; font-size: .8rem; color: var(--text-muted); margin-bottom: .75rem; }
.blog-category {
  display: inline-block;
  background: rgba(99,102,241,.1);
  color: var(--color-primary);
  border-radius: 100px;
  padding: .2rem .75rem;
  font-size: .75rem;
  font-weight: 600;
  margin-bottom: .75rem;
}
.tag-pill {
  display: inline-block;
  background: var(--bg-card-hover);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  padding: .2rem .75rem;
  font-size: .8rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
}
.tag-pill:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ── Careers ─────────────────────────────────────────────── */
.job-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}
.job-card:hover { border-color: var(--color-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.job-badge {
  display: inline-block;
  padding: .3rem .8rem;
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 600;
}
.badge-full-time   { background: rgba(16,185,129,.1); color: #10b981; }
.badge-part-time   { background: rgba(245,158,11,.1);  color: #f59e0b; }
.badge-contract    { background: rgba(99,102,241,.1);  color: #6366f1; }
.badge-remote      { background: rgba(6,182,212,.1);   color: #06b6d4; }

/* ── Download ────────────────────────────────────────────── */
.download-card {
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  text-align: center;
  transition: all var(--transition);
}
.download-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-light); }
.download-icon {
  width: 80px; height: 80px;
  border-radius: var(--radius-lg);
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.version-history-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
}
.version-history-item:last-child { border-bottom: none; }

/* ── Contact ─────────────────────────────────────────────── */
.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 100%;
}
.contact-info-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: rgba(99,102,241,.1);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 2fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
}
@media (max-width: 1024px) { .footer-top { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 640px)  { .footer-top { grid-template-columns: 1fr; gap: 2rem; } }
.footer-logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: .75rem;
}
.footer-tagline { font-size: .9rem; color: var(--text-secondary); max-width: 240px; }
.footer-social { display: flex; gap: .75rem; margin-top: 1.25rem; }
.social-link {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-hover);
  border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-decoration: none;
}
.social-link:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.footer-col-title { font-size: .85rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text-primary); margin-bottom: 1rem; }
.footer-links { list-style: none; padding: 0; }
.footer-links li { margin-bottom: .6rem; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: .9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--color-primary); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom-links { display: flex; gap: 1.5rem; }
.footer-bottom-links a { color: var(--text-muted); text-decoration: none; font-size: .85rem; transition: color var(--transition); }
.footer-bottom-links a:hover { color: var(--text-primary); }

/* ── Newsletter form ─────────────────────────────────────── */
.newsletter-form .form-control {
  background: var(--bg-body);
  border-color: var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

/* ── Forms ───────────────────────────────────────────────── */
.form-control, .form-select {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: .65rem 1rem;
  transition: all var(--transition);
}
.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
  background: var(--bg-card);
  color: var(--text-primary);
}
.form-label { font-weight: 500; font-size: .9rem; color: var(--text-primary); }

/* ── Utilities ───────────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
  margin: 2rem 0;
}
.gradient-border {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}
.gradient-border-inner { border-radius: calc(var(--radius-lg) - 1px); background: var(--bg-card); }

/* ── Animations ──────────────────────────────────────────── */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive nav ──────────────────────────────────────── */
@media (max-width: 991px) {
  .navbar-site .navbar-collapse { background: var(--bg-nav); border-top: 1px solid var(--border-color); padding: 1rem; margin-top: .5rem; border-radius: var(--radius-md); }
  section { padding: 5rem 0; }
  .hero { padding-top: 100px; padding-bottom: 3rem; }
}

/* ── Search bar ──────────────────────────────────────────── */
.search-bar { position: relative; }
.search-bar .form-control { padding-left: 2.75rem; }
.search-bar .search-icon {
  position: absolute; left: .85rem; top: 50%; transform: translateY(-50%);
  color: var(--text-muted); pointer-events: none;
  width: 18px; height: 18px;
}

/* ── Pagination ──────────────────────────────────────────── */
.page-link {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm) !important;
  margin: 0 2px;
  transition: all var(--transition);
}
.page-link:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.page-item.active .page-link { background: var(--color-primary); border-color: var(--color-primary); }

/* ── Back to top ─────────────────────────────────────────── */
#backToTop {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 999;
  width: 44px; height: 44px;
  background: var(--color-primary);
  color: #fff; border: none; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: all var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-md);
}
#backToTop.visible { opacity: 1; pointer-events: all; }