/* ============================================================
   NEXUS AI SAAS TEMPLATE — STYLES
   Premium dark-mode SaaS design system
   ============================================================ */

/* Variables injected by PHP into :root via <style> block in index.php */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 800; letter-spacing: -0.04em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); font-weight: 600; }

p { color: var(--text-muted); line-height: 1.7; }

a { color: inherit; text-decoration: none; }

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

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: clamp(60px, 8vw, 120px) 0; }

/* ——— Eyebrow ——— */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.25);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 0 rgba(99,102,241,0);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(99,102,241,0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--surface);
  color: var(--text);
  border-color: rgba(255,255,255,0.15);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  background: var(--surface);
  border-color: rgba(255,255,255,0.2);
}

/* ——— Navbar ——— */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.navbar-logo svg { color: var(--primary); }

.navbar-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.navbar-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.navbar-links a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-cta {
  padding: 9px 20px;
  font-size: 0.85rem;
}

/* Mobile menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 68px 0 0 0;
  background: rgba(10,10,15,0.97);
  backdrop-filter: blur(20px);
  padding: 24px;
  flex-direction: column;
  gap: 8px;
  z-index: 999;
  overflow-y: auto;
}

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

.mobile-menu a {
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 10px;
  transition: all 0.2s;
}

.mobile-menu a:hover, .mobile-menu a.active {
  color: var(--text);
  background: var(--surface);
}

.mobile-menu .btn {
  margin-top: 8px;
  width: 100%;
  justify-content: center;
}

/* ——— Hero ——— */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  position: relative;
  overflow: hidden;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero-glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.18) 0%, transparent 65%);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  padding: clamp(60px, 8vw, 100px) 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #a5b4fc;
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero h1 {
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  max-width: 1000px;
  margin: 60px auto 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 40px 100px rgba(0,0,0,0.6), 0 0 0 1px rgba(99,102,241,0.1);
}

.hero-visual img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.hero-visual-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
}

/* ——— Trusted By ——— */
.trusted {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trusted-label {
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-align: center;
  margin-bottom: 24px;
}

.trusted-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 32px;
}

.trusted-logos span {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-dim);
  opacity: 0.55;
  transition: opacity 0.2s;
  font-variant-numeric: tabular-nums;
}

.trusted-logos span:hover { opacity: 0.9; }

/* ——— Stats ——— */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-top: 60px;
}

.stat-item {
  background: var(--bg-card);
  padding: 36px 32px;
  text-align: center;
}

.stat-value {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 6px;
  background: linear-gradient(135deg, #fff 40%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 500;
}

/* ——— Product Tabs ——— */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 60px;
}

.product-tabs {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.product-tab {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: 12px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.product-tab:hover, .product-tab.active {
  background: var(--bg-card);
  border-color: var(--border);
}

.product-tab.active {
  border-color: rgba(99,102,241,0.3);
  background: rgba(99,102,241,0.05);
}

.product-tab-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(99,102,241,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.product-tab-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.product-tab-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.product-visual img {
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* ——— Features Grid ——— */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  margin-top: 60px;
}

.feature-card {
  background: var(--bg-card);
  padding: 40px 36px;
  transition: background 0.2s;
}

.feature-card:hover { background: var(--bg-card-hover); }

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1rem;
  font-weight: 650;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ——— Testimonials ——— */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 60px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.2s, transform 0.2s;
}

.testimonial-card:hover {
  border-color: rgba(99,102,241,0.3);
  transform: translateY(-2px);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  color: #f59e0b;
}

.testimonial-quote {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.testimonial-title {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ——— Pricing ——— */
.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 32px 0;
}

.pricing-toggle label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
}

.pricing-toggle label.active { color: var(--text); }

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  transition: background 0.2s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  top: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.toggle-switch input:checked + .toggle-slider { background: rgba(99,102,241,0.2); border-color: rgba(99,102,241,0.4); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); background: var(--primary); }

.save-badge {
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(34,197,94,0.15);
  color: #4ade80;
  border: 1px solid rgba(34,197,94,0.25);
  padding: 3px 10px;
  border-radius: 100px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 36px;
  position: relative;
  transition: border-color 0.2s, transform 0.2s;
}

.pricing-card:hover {
  border-color: rgba(255,255,255,0.12);
  transform: translateY(-2px);
}

.pricing-card.featured {
  border-color: rgba(99,102,241,0.5);
  background: rgba(99,102,241,0.04);
  box-shadow: 0 0 0 1px rgba(99,102,241,0.2), 0 20px 60px rgba(99,102,241,0.1);
}

.plan-badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 18px;
  border-radius: 0 0 10px 10px;
}

.plan-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.plan-price {
  margin-bottom: 28px;
}

.plan-amount {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
}

.plan-currency { font-size: 1.2rem; vertical-align: top; padding-top: 8px; display: inline-block; }
.plan-period { font-size: 0.85rem; color: var(--text-dim); margin-left: 4px; }

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.plan-features li svg {
  flex-shrink: 0;
  color: var(--success);
}

.plan-cta {
  width: 100%;
  justify-content: center;
  padding: 13px;
}

/* ——— FAQ ——— */
.faq-list {
  max-width: 720px;
  margin: 60px auto 0;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker { display: none; }

.faq-chevron {
  flex-shrink: 0;
  color: var(--text-dim);
  transition: transform 0.25s;
}

details[open] .faq-chevron { transform: rotate(180deg); }
details[open] .faq-question { color: var(--primary); }

.faq-answer {
  padding: 0 0 22px;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ——— CTA Banner ——— */
.cta-banner {
  background: linear-gradient(135deg, rgba(99,102,241,0.15) 0%, rgba(139,92,246,0.1) 100%);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 24px;
  padding: clamp(48px, 6vw, 80px) clamp(24px, 5vw, 80px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,0.2) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 40%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-banner p {
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 36px;
}

.cta-banner-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ——— Footer ——— */
.footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-top: 12px;
  max-width: 260px;
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: all 0.2s;
}

.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(99,102,241,0.08);
}

.footer-col-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text);
  margin-bottom: 16px;
}

.footer-col-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-links a {
  font-size: 0.875rem;
  color: var(--text-dim);
  transition: color 0.2s;
}

.footer-col-links a:hover { color: var(--text); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ——— Section Header ——— */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.section-header h2 { margin-bottom: 16px; }
.section-header p { font-size: 1rem; }

/* ——— Scroll Reveal ——— */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ——— Back to Top ——— */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.3s;
  z-index: 900;
}

.back-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ——— Progress Bar ——— */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ——— Responsive ——— */
@media (max-width: 900px) {
  .navbar-links, .navbar-actions { display: none; }
  .hamburger { display: flex; }

  .product-grid { grid-template-columns: 1fr; }
  .product-visual { order: -1; }
  .product-visual img { height: 260px; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-banner-actions { flex-direction: column; align-items: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}