/* FreeCalc App Logo Emerald Green Custom Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@400;600;700;800&display=swap');

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', sans-serif;

  /* App Logo Emerald Green Palette */
  --bg-deep: #070d09;
  --bg-surface: #0e1811;
  --bg-card: rgba(16, 28, 20, 0.7);
  --bg-card-hover: rgba(22, 40, 28, 0.88);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(16, 185, 129, 0.45);

  --primary: #10b981;
  --primary-dark: #009c00;
  --primary-light: #34d399;
  --primary-glow: rgba(16, 185, 129, 0.4);
  
  --accent-teal: #14b8a6;
  --accent-lime: #84cc16;
  --accent-amber: #f59e0b;

  --grad-primary: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
  --grad-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
  --grad-glow: radial-gradient(circle, rgba(16, 185, 129, 0.18) 0%, transparent 70%);

  --text-primary: #f8fafc;
  --text-secondary: #a7f3d0;
  --text-tertiary: #6ee7b7;

  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-pill: 9999px;

  --shadow-glow: 0 0 50px -10px rgba(16, 185, 129, 0.38);
  --glass-blur: blur(20px);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Ambient Background Mesh - App Logo Colors */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: -10%;
  width: 75vw;
  height: 75vw;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.22) 0%, rgba(5, 150, 105, 0.1) 50%, transparent 70%);
  z-index: -2;
  filter: blur(80px);
  animation: pulseGlow 12s infinite alternate ease-in-out;
}

body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  right: -10%;
  width: 65vw;
  height: 65vw;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.18) 0%, rgba(132, 204, 22, 0.08) 50%, transparent 70%);
  z-index: -2;
  filter: blur(90px);
  animation: pulseGlow 16s infinite alternate-reverse ease-in-out;
}

@keyframes pulseGlow {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.15) translate(30px, -30px); }
}

.container {
  max-width: 1240px;
  width: 90%;
  margin: 0 auto;
  padding: 0 16px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* Header Navbar */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 13, 9, 0.78);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 0;
  transition: all 0.3s ease;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
}

.logo-img {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px var(--primary-glow);
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: #94a3b8;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-primary);
  border-radius: var(--radius-pill);
}

/* Buttons & CTA */
.btn-cta {
  background: var(--grad-primary);
  color: #fff !important;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 8px 25px var(--primary-glow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: 0.5s;
}

.btn-cta:hover::before {
  left: 100%;
}

.btn-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 35px rgba(16, 185, 129, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: #fff !important;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}

/* Hero Split Layout */
.hero {
  padding: 90px 0 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  text-align: left;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--primary-light);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 22px;
}

.hero h1 span.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.18rem;
  color: #94a3b8;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item h4 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-light);
}

.stat-item p {
  font-size: 0.88rem;
  color: #64748b;
  margin-bottom: 0;
}

/* Live Interactive Phone Frame */
.hero-mockup {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-card {
  width: 340px;
  background: #0b140e;
  border: 2px solid rgba(16, 185, 129, 0.3);
  border-radius: 40px;
  padding: 24px;
  box-shadow: var(--shadow-glow), 0 30px 60px rgba(0, 0, 0, 0.85);
  position: relative;
  overflow: hidden;
}

.phone-screen {
  background: #060b08;
  border-radius: 28px;
  padding: 20px;
  border: 1px solid rgba(16, 185, 129, 0.15);
}

.calc-display {
  text-align: right;
  padding: 16px 12px;
  background: rgba(16, 185, 129, 0.05);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  border: 1px solid rgba(16, 185, 129, 0.12);
}

.calc-expression {
  font-size: 0.9rem;
  color: #64748b;
  min-height: 20px;
}

.calc-result {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-light);
  overflow-x: auto;
  white-space: nowrap;
}

.calc-keypad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.calc-btn {
  aspect-ratio: 1;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calc-btn:hover {
  background: rgba(16, 185, 129, 0.2);
  transform: scale(1.05);
}

.calc-btn.op {
  background: rgba(16, 185, 129, 0.2);
  color: var(--primary-light);
  border-color: rgba(16, 185, 129, 0.4);
}

.calc-btn.eq {
  background: var(--grad-primary);
  color: #fff;
  border: none;
}

/* Floating Badges on Mockup */
.float-badge {
  position: absolute;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: rgba(14, 24, 17, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-highlight);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  animation: floatAnim 4s infinite ease-in-out alternate;
}

.float-badge img {
  width: 20px;
  height: 20px;
}

.badge-left {
  top: 40px;
  left: -20px;
}

.badge-right {
  bottom: 50px;
  right: -20px;
  animation-delay: -2s;
}

@keyframes floatAnim {
  0% { transform: translateY(0); }
  100% { transform: translateY(-12px); }
}

/* Feature Cards Grid */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 56px;
}

.section-title h2 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.section-title p {
  color: #94a3b8;
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 34px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--grad-glow);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  background: rgba(16, 185, 129, 0.12);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
  color: var(--primary-light);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.card p {
  color: #94a3b8;
  font-size: 0.98rem;
  line-height: 1.6;
}

/* Privacy Policy Content Container */
.policy-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 50px;
  margin-top: 20px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(16px);
}

.policy-box h3 {
  font-size: 1.45rem;
  color: var(--primary-light);
  margin: 32px 0 14px;
}

.policy-box h3:first-child {
  margin-top: 0;
}

.policy-box p, .policy-box ul {
  color: #94a3b8;
  font-size: 1.02rem;
  margin-bottom: 18px;
  line-height: 1.75;
}

.policy-box ul {
  padding-left: 28px;
}

.policy-box li {
  margin-bottom: 10px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 50px 0;
  text-align: center;
  color: #64748b;
  font-size: 0.95rem;
  background: rgba(7, 13, 9, 0.92);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-bottom: 20px;
}

.footer-links a {
  color: #94a3b8;
  font-weight: 500;
  text-decoration: none;
}

.footer-links a:hover {
  color: #fff;
}

/* Responsive Rules */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 50px;
  }

  .hero-content {
    text-align: center;
  }

  .hero p {
    margin: 0 auto 36px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #070d09;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .policy-box {
    padding: 28px;
  }
}