/* =============================================
   EcoBottle Boat – style.css
   Eco-tech landing page design system
   ============================================= */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue-50:  #eff6ff;
  --blue-100: #dbeafe;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --green-50:  #f0fdf4;
  --green-100: #dcfce7;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --teal-400: #2dd4bf;
  --teal-500: #14b8a6;
  --cyan-400: #22d3ee;
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --white: #ffffff;

  --grad-main: linear-gradient(135deg, #0ea5e9 0%, #22c55e 100%);
  --grad-hero: linear-gradient(160deg, #0f172a 0%, #0c2340 60%, #0a3a2a 100%);
  --grad-section: linear-gradient(180deg, #f0fdf4 0%, #eff6ff 100%);

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.14);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.18);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --ff-sans: 'Inter', system-ui, sans-serif;
  --ff-display: 'Space Grotesk', system-ui, sans-serif;

  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-sans);
  color: var(--slate-800);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Typography ---------- */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-500);
  background: var(--green-50);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  border: 1px solid var(--green-100);
}

.section-title {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--slate-900);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--slate-500);
  max-width: 600px;
  margin: 0 auto 48px;
  text-align: center;
}

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

.gradient-text-light {
  background: linear-gradient(135deg, #7dd3fc 0%, #86efac 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-main);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(34,197,94,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(34,197,94,.4); }

.btn-ghost {
  background: rgba(255,255,255,.12);
  color: var(--white);
  border-color: rgba(255,255,255,.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,.2); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--blue-600);
  border-color: var(--blue-300);
}
.btn-outline:hover { background: var(--blue-50); transform: translateY(-2px); }

.btn-white {
  background: var(--white);
  color: var(--slate-900);
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}
.btn-white:hover { transform: translateY(-3px); box-shadow: var(--shadow-xl); }

.btn-sm { padding: 9px 20px; font-size: 0.88rem; }

/* ---------- Section base ---------- */
.section { padding: 100px 0; }

/* ---------- Animations ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-animate="fade-left"] { transform: translateX(-30px); }
[data-animate="fade-right"] { transform: translateX(30px); }
[data-animate].visible {
  opacity: 1;
  transform: translate(0);
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
  padding: 18px 0;
}
.navbar.scrolled {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  padding: 12px 0;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-display);
  font-size: 1.2rem;
  color: var(--white);
  font-weight: 500;
  transition: color var(--transition);
}
.navbar.scrolled .nav-logo { color: var(--slate-900); }
.logo-icon { font-size: 1.5rem; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: var(--transition);
}
.navbar.scrolled .nav-links a { color: var(--slate-700); }
.nav-links a:hover { background: rgba(255,255,255,.12); color: var(--white); }
.navbar.scrolled .nav-links a:hover { background: var(--slate-100); color: var(--slate-900); }
.nav-links .btn-sm {
  background: var(--grad-main);
  color: var(--white) !important;
  padding: 9px 20px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.navbar.scrolled .hamburger span { background: var(--slate-800); }

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  background: var(--grad-hero);
  position: relative;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg-circles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  animation: float-circle 8s ease-in-out infinite;
}
.c1 { width: 500px; height: 500px; background: #0ea5e9; top: -150px; right: -100px; }
.c2 { width: 400px; height: 400px; background: #22c55e; bottom: 50px; left: -100px; animation-delay: 2s; }
.c3 { width: 300px; height: 300px; background: #14b8a6; top: 50%; left: 50%; animation-delay: 4s; }

@keyframes float-circle {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.9);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero-headline {
  font-family: var(--ff-display);
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 20px;
}
.stat { display: flex; flex-direction: column; gap: 3px; }
.stat-num {
  font-family: var(--ff-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}
.stat-label { font-size: 0.78rem; color: rgba(255,255,255,.55); font-weight: 500; }
.stat-div { width: 1px; height: 36px; background: rgba(255,255,255,.2); }

/* Hero visual */
.hero-visual { position: relative; }
.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: visible;
}
.hero-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: 0 30px 80px rgba(0,0,0,.5);
  animation: boat-float 4s ease-in-out infinite;
}
@keyframes boat-float {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-12px) rotate(1deg); }
}

.sensor-tag {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  animation: tag-pulse 3s ease-in-out infinite;
}
.sensor-tag div { display: flex; flex-direction: column; line-height: 1.3; }
.sensor-tag strong { font-weight: 700; color: var(--slate-800); }
.sensor-tag small { color: var(--slate-500); font-size: 0.78rem; }
.tag-icon { font-size: 1.4rem; }
.tag-ph { top: 20px; left: -20px; animation-delay: 0s; }
.tag-temp { bottom: 70px; right: -20px; animation-delay: 1s; }
.tag-turb { bottom: -10px; left: 30px; animation-delay: 2s; }

@keyframes tag-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.water-ripple {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 30px;
  background: radial-gradient(ellipse, rgba(34,197,94,.25) 0%, transparent 70%);
  border-radius: 50%;
  animation: ripple 3s ease-in-out infinite;
}
@keyframes ripple {
  0%, 100% { transform: translateX(-50%) scaleX(1); opacity: 0.4; }
  50% { transform: translateX(-50%) scaleX(1.2); opacity: 0.6; }
}

.hero-wave {
  position: absolute;
  bottom: 0; left: 0; right: 0;
}
.hero-wave svg { display: block; }

/* =============================================
   PROBLEM
   ============================================= */
.problem-section { background: #f0f9ff; text-align: center; }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.problem-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: left;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  transition: var(--transition);
}
.problem-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.problem-icon { font-size: 2.4rem; margin-bottom: 16px; }
.problem-card h3 { font-family: var(--ff-display); font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--slate-800); }
.problem-card p { font-size: 0.9rem; color: var(--slate-500); line-height: 1.65; }

/* =============================================
   SOLUTION
   ============================================= */
.solution-section { background: var(--white); }
.solution-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.solution-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: visible;
}
.solution-img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  object-fit: cover;
  max-height: 420px;
}
.solution-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  box-shadow: var(--shadow-lg);
  font-size: 2rem;
}
.solution-badge div { display: flex; flex-direction: column; }
.solution-badge strong { font-weight: 700; color: var(--slate-800); font-size: 0.9rem; }
.solution-badge small { color: var(--slate-500); font-size: 0.78rem; }

.solution-text .section-title { text-align: left; }
.solution-text p { color: var(--slate-600); margin-bottom: 32px; line-height: 1.7; }

.solution-list { list-style: none; margin-bottom: 40px; display: flex; flex-direction: column; gap: 20px; }
.solution-list li { display: flex; gap: 16px; align-items: flex-start; }
.check-icon {
  width: 28px; height: 28px; min-width: 28px;
  background: var(--grad-main);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 700;
  margin-top: 2px;
}
.solution-list li div strong { display: block; font-weight: 700; color: var(--slate-800); margin-bottom: 4px; }
.solution-list li div p { color: var(--slate-500); font-size: 0.9rem; margin: 0; line-height: 1.5; }

/* =============================================
   FEATURES
   ============================================= */
.features-section { background: var(--grad-section); text-align: center; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  text-align: left;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.card-blue::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.card-green::before { background: linear-gradient(90deg, #22c55e, #4ade80); }
.card-orange::before { background: linear-gradient(90deg, #f97316, #fb923c); }
.card-teal::before { background: linear-gradient(90deg, #14b8a6, #2dd4bf); }
.card-purple::before { background: linear-gradient(90deg, #a855f7, #c084fc); }
.card-indigo::before { background: linear-gradient(90deg, #6366f1, #818cf8); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-icon { font-size: 2.5rem; margin-bottom: 16px; }
.feature-card h3 { font-family: var(--ff-display); font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--slate-800); }
.feature-card p { font-size: 0.9rem; color: var(--slate-500); line-height: 1.65; margin-bottom: 16px; }

/* pH range bar */
.feature-range { display: flex; align-items: center; gap: 10px; font-size: 0.75rem; color: var(--slate-500); margin-top: 12px; }
.range-bar { flex: 1; height: 6px; background: linear-gradient(90deg, #ef4444, #eab308, #22c55e, #3b82f6); border-radius: 3px; position: relative; }
.range-fill { position: absolute; top: -5px; width: 14px; height: 14px; background: var(--white); border: 2px solid #3b82f6; border-radius: 50%; transform: translateX(-50%); }

/* Turbidity meter */
.feature-meter { margin-top: 12px; }
.meter-bar { height: 8px; background: var(--slate-100); border-radius: 4px; overflow: hidden; margin-bottom: 6px; }
.meter-fill { height: 100%; border-radius: 4px; }
.turbidity-fill { width: 15%; background: var(--blue-400); animation: grow-bar 2s ease-out forwards; }
@keyframes grow-bar { from { width: 0; } to { width: 15%; } }
.feature-meter span { font-size: 0.78rem; color: var(--slate-500); }

/* Temp display */
.feature-temp { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.temp-val { font-size: 1.5rem; font-weight: 700; color: var(--slate-800); font-family: var(--ff-display); }
.temp-tag { background: #dcfce7; color: var(--green-600); font-size: 0.78rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

/* =============================================
   HOW IT WORKS
   ============================================= */
.howitworks-section { background: var(--white); text-align: center; }
.steps-container {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  margin-top: 60px;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 220px;
  max-width: 300px;
  padding: 40px 28px;
  background: linear-gradient(135deg, #f0fdf4 0%, #eff6ff 100%);
  border-radius: var(--radius-xl);
  border: 1px solid var(--slate-200);
  text-align: center;
  transition: var(--transition);
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-num {
  font-family: var(--ff-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue-500);
  text-transform: uppercase;
  margin-bottom: 16px;
  background: var(--blue-50);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
}
.step-icon { font-size: 3rem; margin-bottom: 16px; display: block; }
.step h3 { font-family: var(--ff-display); font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; color: var(--slate-800); }
.step p { font-size: 0.9rem; color: var(--slate-500); line-height: 1.65; }
.step-arrow {
  font-size: 2rem;
  color: var(--slate-300);
  align-self: center;
  padding-top: 20px;
}

/* =============================================
   USE CASES
   ============================================= */
.usecases-section { background: var(--grad-section); text-align: center; }
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.usecase-card {
  padding: 40px 24px;
  border-radius: var(--radius-xl);
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}
.uc-blue { background: #eff6ff; border-color: var(--blue-100); }
.uc-green { background: var(--green-50); border-color: var(--green-100); }
.uc-teal { background: #f0fdfa; border-color: #99f6e4; }
.uc-purple { background: #faf5ff; border-color: #e9d5ff; }
.usecase-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.uc-icon { font-size: 3rem; margin-bottom: 16px; display: block; }
.usecase-card h3 { font-family: var(--ff-display); font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; color: var(--slate-800); }
.usecase-card p { font-size: 0.88rem; color: var(--slate-500); line-height: 1.65; }

/* =============================================
   BENEFITS
   ============================================= */
.benefits-section { background: var(--white); }
.benefits-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.benefits-text .section-title { text-align: left; }
.benefits-text p { color: var(--slate-500); line-height: 1.7; margin-top: 12px; }

.benefits-list { display: flex; flex-direction: column; gap: 24px; }
.benefit-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: linear-gradient(135deg, #f0fdf4, #eff6ff);
  border-radius: var(--radius-lg);
  border: 1px solid var(--slate-200);
  transition: var(--transition);
}
.benefit-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }
.benefit-icon {
  font-size: 2rem;
  width: 52px; height: 52px; min-width: 52px;
  background: var(--white);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-sm);
}
.benefit-item h4 { font-family: var(--ff-display); font-weight: 700; margin-bottom: 6px; color: var(--slate-800); }
.benefit-item p { font-size: 0.9rem; color: var(--slate-500); line-height: 1.6; margin: 0; }

/* =============================================
   IMPACT
   ============================================= */
.impact-section {
  background: var(--grad-hero);
  color: var(--white);
  text-align: center;
}
.impact-section .section-label { background: rgba(255,255,255,.12); border-color: transparent; color: var(--green-400); }
.impact-section .section-title { color: var(--white); }
.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.impact-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-xl);
  padding: 40px 24px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.impact-card:hover { background: rgba(255,255,255,.14); transform: translateY(-4px); }
.impact-num {
  font-family: var(--ff-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}
.impact-num::after { content: '+'; font-size: 1.8rem; }
.impact-label { color: rgba(255,255,255,.65); font-size: 0.9rem; margin-bottom: 20px; }
.impact-bar { height: 6px; background: rgba(255,255,255,.12); border-radius: 3px; overflow: hidden; }
.impact-progress {
  height: 100%;
  width: var(--w);
  background: var(--grad-main);
  border-radius: 3px;
  animation: slide-in .8s ease-out forwards;
  transform: translateX(-100%);
}
@keyframes slide-in { to { transform: translateX(0); } }

/* =============================================
   PRICING
   ============================================= */
.pricing-section { background: var(--slate-50); text-align: center; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  align-items: stretch;
}
.pricing-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  border: 2px solid var(--slate-200);
  text-align: left;
  position: relative;
  transition: var(--transition);
}
.pricing-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.pricing-featured {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 1px var(--blue-500), var(--shadow-xl);
  transform: scale(1.03);
}
.pricing-featured:hover { transform: scale(1.03) translateY(-6px); }
.pricing-badge-pill {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-main);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 999px;
  white-space: nowrap;
}
.pricing-tier { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; color: var(--slate-500); margin-bottom: 12px; }
.pricing-price {
  font-family: var(--ff-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--slate-900);
  line-height: 1;
  margin-bottom: 12px;
}
.pricing-price span { font-size: 1rem; font-weight: 500; color: var(--slate-500); }
.pricing-desc { font-size: 0.88rem; color: var(--slate-500); margin-bottom: 28px; line-height: 1.5; }
.pricing-features { list-style: none; margin-bottom: 32px; display: flex; flex-direction: column; gap: 10px; }
.pricing-features li { font-size: 0.9rem; color: var(--slate-700); }
.pricing-features li.disabled { color: var(--slate-400); }
.pricing-card .btn { width: 100%; justify-content: center; }

/* =============================================
   CTA
   ============================================= */
.cta-section { background: var(--white); padding: 60px 0 100px; }
.cta-card {
  background: var(--grad-hero);
  border-radius: var(--radius-xl);
  padding: 80px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-bg-blob {
  position: absolute;
  inset: -50%;
  background: radial-gradient(ellipse at center, rgba(34,197,94,.2) 0%, transparent 60%);
  pointer-events: none;
  animation: blob-pulse 5s ease-in-out infinite;
}
@keyframes blob-pulse { 0%, 100% { transform: scale(1); opacity: 0.5; } 50% { transform: scale(1.2); opacity: 0.8; } }
.cta-emoji { font-size: 3.5rem; display: block; margin-bottom: 20px; }
.cta-card h2 {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.2;
}
.cta-card p { color: rgba(255,255,255,.7); font-size: 1.05rem; max-width: 520px; margin: 0 auto 36px; line-height: 1.6; }

/* =============================================
   FAQ
   ============================================= */
.faq-section { background: var(--slate-50); text-align: center; }
.faq-list { max-width: 720px; margin: 48px auto 0; text-align: left; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius-lg); overflow: hidden; }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--slate-800);
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  font-family: var(--ff-sans);
}
.faq-q:hover { background: var(--slate-50); }
.faq-q.open { color: var(--blue-600); }
.faq-arrow { font-size: 1.1rem; transition: transform var(--transition); flex-shrink: 0; }
.faq-q.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
}
.faq-a.open { max-height: 200px; padding: 0 24px 20px; }
.faq-a p { font-size: 0.9rem; color: var(--slate-500); line-height: 1.7; }

/* =============================================
   CONTACT
   ============================================= */
.contact-section { background: var(--white); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: flex-start;
}
.contact-text .section-title { text-align: left; }
.contact-text p { color: var(--slate-500); line-height: 1.7; margin-bottom: 32px; }
.contact-info { display: flex; flex-direction: column; gap: 14px; }
.contact-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--slate-600);
  font-weight: 500;
}
.contact-info-item span { font-size: 1.2rem; }

/* Form */
.contact-form {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--slate-700); }
.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--ff-sans);
  color: var(--slate-800);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(59,130,246,.12); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-submit { width: 100%; margin-top: 8px; }
.form-success {
  margin-top: 16px;
  text-align: center;
  color: var(--green-600);
  font-weight: 600;
  font-size: 0.9rem;
  display: none;
}
.form-success.show { display: block; animation: fade-in .4s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* =============================================
   FOOTER
   ============================================= */
.footer { background: var(--slate-900); color: rgba(255,255,255,.7); padding: 60px 0 0; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--ff-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--white);
}
.footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,.5); font-family: var(--ff-sans); font-weight: 400; margin-top: 8px; max-width: 280px; line-height: 1.6; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h5 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,.4); font-weight: 600; margin-bottom: 4px; }
.footer-col a { font-size: 0.88rem; color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer-col a:hover { color: var(--white); }
.footer-bottom { text-align: center; padding: 24px; font-size: 0.83rem; color: rgba(255,255,255,.35); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 70px 0; }

  /* Navbar */
  .nav-links {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 100vh;
    background: var(--slate-900);
    flex-direction: column;
    justify-content: center;
    gap: 16px;
    padding: 40px 24px;
    transform: translateX(-100%);
    transition: transform var(--transition);
    z-index: 999;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.1rem; color: var(--white) !important; }
  .hamburger { display: flex; z-index: 1001; position: relative; }

  /* Hero */
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; padding-top: 20px; }
  .hero-text { order: 1; }
  .hero-visual { order: 2; }
  .hero-sub { margin: 0 auto 32px; }
  .hero-cta-group { justify-content: center; }
  .hero-stats { justify-content: center; }
  .tag-ph { left: -10px; }
  .tag-temp { right: -10px; }

  /* Sections */
  .solution-inner { grid-template-columns: 1fr; gap: 40px; }
  .benefits-inner { grid-template-columns: 1fr; gap: 40px; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-links { grid-template-columns: repeat(3, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin-left: auto; margin-right: auto; }
  .pricing-featured { transform: scale(1); }
  .pricing-featured:hover { transform: translateY(-6px); }

  .steps-container { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); padding: 0; }

  .problem-grid { grid-template-columns: 1fr; }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .section-title { text-align: center !important; }
  .solution-text .section-label, .benefits-text .section-label, .contact-text .section-label { display: block; width: fit-content; }
  .solution-text, .benefits-text, .contact-text { text-align: center; }
  .solution-list li { text-align: left; }
  .solution-text .btn, .contact-text { text-align: center; }
}

@media (max-width: 480px) {
  .impact-grid { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }
  .hero-headline { font-size: 2.2rem; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-div { width: 36px; height: 1px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}