/* ============================================
   DealOS Landing Page — Premium Dark Theme
   ============================================ */

:root {
  --bg: #0a0f1e;
  --bg-alt: #0d1327;
  --card: #111827;
  --card-border: #1e293b;
  --card-hover: #162032;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --green: #10b981;
  --green-glow: rgba(16, 185, 129, 0.15);
  --amber: #f59e0b;
  --red: #ef4444;
  --purple: #8b5cf6;
  --text: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #10b981 100%);
  --radius: 12px;
  --radius-lg: 20px;
}

/* ---- Reset / Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ---- Typography ---- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.25rem; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block; padding: 6px 16px; border-radius: 100px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  background: var(--accent-glow); color: var(--accent); margin-bottom: 16px;
}
.section-desc { color: var(--text-secondary); margin-top: 16px; font-size: 1.1rem; }
.section { padding: 100px 0; }
.section-dark { background: var(--bg-alt); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; border-radius: 10px; border: none;
  cursor: pointer; transition: all 0.25s ease; font-family: inherit;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  background: #2563eb; box-shadow: 0 0 36px rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--card-border);
}
.btn-outline:hover { border-color: var(--accent); background: var(--accent-glow); }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-block { width: 100%; }

/* ---- NAV ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0;
  background: rgba(10, 15, 30, 0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--card-border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 1.4rem; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.logo-svg { flex-shrink: 0; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 12px; }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span {
  display: block; width: 24px; height: 2px; background: var(--text);
  margin: 5px 0; border-radius: 2px; transition: 0.3s;
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; padding: 120px 0 80px; overflow: hidden;
}
.hero-gradient-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(59, 130, 246, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 40%, rgba(139, 92, 246, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 50% 80%, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
  animation: heroGradientShift 8s ease-in-out infinite alternate;
}
@keyframes heroGradientShift {
  0% { opacity: 0.7; transform: scale(1) translateX(0); }
  50% { opacity: 1; transform: scale(1.05) translateX(2%); }
  100% { opacity: 0.8; transform: scale(1) translateX(-2%); }
}
.hero-bg-grid {
  position: absolute; inset: 0; z-index: 1;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
}
.hero-inner { text-align: center; position: relative; z-index: 2; }
.hero-badge {
  display: inline-block; padding: 8px 20px; border-radius: 100px;
  font-size: 0.85rem; font-weight: 500;
  background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--green); margin-bottom: 32px;
}
.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem); font-weight: 900;
  letter-spacing: -0.02em; margin-bottom: 24px;
}
.hero-subtitle {
  font-size: 1.15rem; color: var(--text-secondary);
  max-width: 640px; margin: 0 auto 40px;
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; justify-content: center; margin-top: 64px; }
.hero-stat { text-align: center; }
.hero-stat-num { display: block; font-size: 2rem; font-weight: 800; color: var(--accent); }
.hero-stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* ---- PROBLEMS ---- */
.problems-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.problem-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 28px; transition: all 0.3s ease;
}
.problem-card:hover {
  border-color: rgba(59, 130, 246, 0.3); background: var(--card-hover);
  transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}
.problem-icon-wrap { margin-bottom: 16px; }
.problem-card h3 { margin-bottom: 8px; }
.problem-card p { color: var(--text-secondary); font-size: 0.92rem; }

/* ---- SOLUTIONS ---- */
.solutions-grid { display: flex; flex-direction: column; gap: 16px; }
.solution-card {
  display: grid; grid-template-columns: 180px 48px 1fr; align-items: center; gap: 16px;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 24px 28px; transition: all 0.3s ease;
}
.solution-card:hover {
  border-color: rgba(59, 130, 246, 0.3); transform: translateX(4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.solution-problem {
  font-weight: 700; color: var(--text-muted); font-size: 0.95rem;
  padding: 8px 16px; border-radius: 8px;
  background: rgba(255, 255, 255, 0.03); text-align: center;
}
.solution-arrow { display: flex; align-items: center; justify-content: center; }
.solution-answer h3 { margin-bottom: 4px; font-size: 1.1rem; }
.solution-answer p { color: var(--text-secondary); font-size: 0.9rem; }

/* ---- DASHBOARD MOCKUP ---- */
.dashboard-mockup {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255,255,255,0.03);
}
.mockup-chrome {
  display: flex; align-items: center; gap: 16px; padding: 14px 20px;
  background: rgba(0, 0, 0, 0.3); border-bottom: 1px solid var(--card-border);
}
.chrome-dots { display: flex; gap: 6px; }
.chrome-dots span { width: 10px; height: 10px; border-radius: 50%; }
.chrome-dots span:nth-child(1) { background: #ef4444; }
.chrome-dots span:nth-child(2) { background: #f59e0b; }
.chrome-dots span:nth-child(3) { background: #10b981; }
.chrome-url {
  flex: 1; background: rgba(255,255,255,0.05); border-radius: 6px;
  padding: 6px 14px; font-size: 0.75rem; color: var(--text-muted);
}
.mockup-body { display: flex; min-height: 340px; }
.mockup-sidebar {
  width: 180px; padding: 16px; background: rgba(0, 0, 0, 0.2);
  border-right: 1px solid var(--card-border); flex-shrink: 0;
}
.mockup-sidebar-logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 0.9rem; margin-bottom: 20px;
}
.mockup-nav-item {
  padding: 8px 12px; border-radius: 8px; font-size: 0.8rem;
  color: var(--text-muted); margin-bottom: 4px; transition: all 0.2s;
}
.mockup-nav-item.active { background: var(--accent-glow); color: var(--accent); font-weight: 600; }
.mockup-content { flex: 1; padding: 20px; }
.mockup-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.mockup-kpi {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.05);
  border-radius: 10px; padding: 14px;
}
.kpi-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.kpi-value { font-size: 1.5rem; font-weight: 800; margin: 4px 0; }
.kpi-change { font-size: 0.7rem; font-weight: 600; }
.kpi-change.up { color: var(--green); }
.mockup-charts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mockup-chart, .mockup-activity {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.05);
  border-radius: 10px; padding: 14px;
}
.chart-title { font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 12px; }
.chart-bars { display: flex; align-items: flex-end; gap: 12px; height: 120px; padding-top: 8px; }
.chart-bar-group { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.chart-bar {
  width: 100%; border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--accent), rgba(59, 130, 246, 0.3));
  transition: height 1s ease;
}
.chart-bar.bar-blue { background: linear-gradient(180deg, #6366f1, rgba(99, 102, 241, 0.3)); }
.chart-bar.bar-amber { background: linear-gradient(180deg, var(--amber), rgba(245, 158, 11, 0.3)); }
.chart-bar.bar-purple { background: linear-gradient(180deg, var(--purple), rgba(139, 92, 246, 0.3)); }
.chart-bar.bar-green { background: linear-gradient(180deg, var(--green), rgba(16, 185, 129, 0.3)); }
.chart-bar-group span { font-size: 0.6rem; color: var(--text-muted); }
.activity-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.75rem; color: var(--text-secondary); padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.activity-item:last-child { border-bottom: none; }
.activity-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.activity-dot.green { background: var(--green); }
.activity-dot.blue { background: var(--accent); }
.activity-dot.amber { background: var(--amber); }
.activity-dot.purple { background: var(--purple); }

/* ---- PRICING ---- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.pricing-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-lg); padding: 36px 28px;
  position: relative; transition: all 0.3s ease;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: 0 16px 48px rgba(0,0,0,0.3); }
.pricing-card-featured { border-color: var(--accent); box-shadow: 0 0 40px var(--accent-glow); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; padding: 4px 16px;
  border-radius: 100px; font-size: 0.75rem; font-weight: 600;
}
.pricing-tier { font-size: 0.85rem; margin-bottom: 8px; font-weight: 600; }
.tier-green { color: var(--green); }
.tier-blue { color: var(--accent); }
.tier-purple { color: var(--purple); }
.pricing-price { margin: 20px 0; }
.price-amount { font-size: 2.2rem; font-weight: 800; }
.price-period { color: var(--text-muted); font-size: 0.9rem; }
.pricing-features { margin-bottom: 28px; }
.pricing-features li {
  padding: 6px 0; font-size: 0.9rem; color: var(--text-secondary);
  display: flex; align-items: center; gap: 8px;
}
.pricing-features .check { color: var(--green); font-weight: 700; font-size: 0.85rem; }

/* ---- TESTIMONIALS ---- */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.testimonial-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 28px; transition: all 0.3s ease;
}
.testimonial-card:hover { border-color: rgba(59, 130, 246, 0.2); transform: translateY(-2px); }
.testimonial-stars { color: var(--amber); margin-bottom: 12px; letter-spacing: 2px; font-size: 1.1rem; }
.testimonial-card > p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent-glow); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem;
}
.testimonial-author strong { display: block; font-size: 0.9rem; }
.testimonial-author span { font-size: 0.8rem; color: var(--text-muted); }

/* ---- WAITLIST ---- */
.waitlist-box {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-lg); padding: 56px 48px;
  text-align: center; max-width: 640px; margin: 0 auto;
  position: relative; overflow: hidden;
}
.waitlist-box::before {
  content: ''; position: absolute; inset: -2px; z-index: -1;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent), var(--purple), var(--green));
  opacity: 0.15;
}
.waitlist-box h2 { font-size: 2rem; margin-bottom: 12px; }
.waitlist-box > p { color: var(--text-secondary); margin-bottom: 32px; }
.waitlist-form { display: flex; flex-direction: column; gap: 14px; }
.waitlist-form input, .waitlist-form select {
  width: 100%; padding: 14px 16px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--card-border);
  border-radius: 10px; color: var(--text); font-size: 0.95rem;
  font-family: inherit; transition: border-color 0.2s;
}
.waitlist-form input:focus, .waitlist-form select:focus { outline: none; border-color: var(--accent); }
.waitlist-form select option { background: var(--card); color: var(--text); }
.waitlist-note { margin-top: 16px; font-size: 0.8rem; color: var(--text-muted); }
.waitlist-success { padding: 32px 0; }
.waitlist-success .success-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--green-glow); color: var(--green);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700; margin-bottom: 16px;
}
.waitlist-success h3 { margin-bottom: 8px; color: var(--green); }

/* ---- FAQ ---- */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--card-border); border-radius: var(--radius);
  margin-bottom: 12px; background: var(--card); overflow: hidden;
}
.faq-item summary {
  padding: 18px 24px; cursor: pointer; font-weight: 600; font-size: 1rem;
  list-style: none; display: flex; align-items: center; justify-content: space-between;
  transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.3rem; color: var(--text-muted); transition: transform 0.3s; }
.faq-item[open] summary::after { content: '\2212'; }
.faq-item summary:hover { color: var(--accent); }
.faq-item > p { padding: 0 24px 18px; color: var(--text-secondary); font-size: 0.92rem; }

/* ---- FOOTER ---- */
.footer { padding: 64px 0 40px; border-top: 1px solid var(--card-border); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 40px; }
.footer-brand { max-width: 280px; }
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { color: var(--text-muted); font-size: 0.85rem; margin-top: 8px; }
.footer-legal { margin-top: 12px !important; }
.footer-links { display: flex; gap: 56px; }
.footer-links div { display: flex; flex-direction: column; gap: 8px; }
.footer-links h4 { color: var(--text); font-size: 0.85rem; margin-bottom: 4px; }
.footer-links a { color: var(--text-muted); font-size: 0.85rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }

/* ---- Scroll Reveal Animation ---- */
.scroll-reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.scroll-reveal.visible {
  opacity: 1; transform: translateY(0);
}

.fade-up {
  opacity: 0; transform: translateY(20px);
  animation: fadeUpIn 0.8s ease-out forwards;
}
.fade-up:nth-child(1) { animation-delay: 0s; }
.fade-up:nth-child(2) { animation-delay: 0.1s; }
.fade-up:nth-child(3) { animation-delay: 0.2s; }
.fade-up:nth-child(4) { animation-delay: 0.3s; }
.fade-up:nth-child(5) { animation-delay: 0.4s; }

@keyframes fadeUpIn {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fillBar {
  from { width: 0; }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .problems-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr 1fr; }
  h2 { font-size: 2rem; }
  .hero-stats { gap: 32px; }
  .footer-inner { flex-direction: column; }
  .solution-card { grid-template-columns: 1fr; text-align: center; }
  .solution-arrow { transform: rotate(90deg); }
  .mockup-kpis { grid-template-columns: repeat(2, 1fr); }
  .mockup-sidebar { display: none; }
  .mockup-charts { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg); padding: 20px 24px; gap: 16px;
    border-bottom: 1px solid var(--card-border);
  }
  .problems-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .hero-title { font-size: 2.2rem; }
  .section { padding: 64px 0; }
  .waitlist-box { padding: 36px 24px; }
  .footer-links { flex-direction: column; gap: 24px; }
  .mockup-kpis { grid-template-columns: 1fr 1fr; }
}