/* ==========================================================================
   SayNota — Modern Dark & Teal Design System
   Target URL: https://saynota.abipraja.com
   ========================================================================== */

:root {
  --primary: #0D9488;
  --primary-light: #14B8A6;
  --primary-dark: #0F766E;
  --primary-glow: rgba(13, 148, 136, 0.35);
  
  --accent-gold: #F59E0B;
  --accent-blue: #3B82F6;
  --accent-green: #10B981;
  --accent-red: #EF4444;

  --bg-dark: #0F172A;
  --bg-card: #1E293B;
  --bg-card-hover: #273549;
  --bg-elevated: #334155;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(20, 184, 166, 0.3);

  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: #5EEAD4;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navbar */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 0;
}

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

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 0 15px var(--primary-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language Switcher */
.lang-switch {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3px;
  cursor: pointer;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn.active {
  background: var(--primary);
  color: #ffffff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(13, 148, 136, 0.5);
  color: #FFFFFF;
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--primary);
}

/* Hero Section */
.hero {
  padding: 10rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-glow) 0%, rgba(15,23,42,0) 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(13, 148, 136, 0.15);
  border: 1px solid rgba(20, 184, 166, 0.3);
  border-radius: 30px;
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 1.5rem;
}

.hero-title span {
  background: linear-gradient(135deg, #2DD4BF 0%, #0D9488 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

/* Interactive Demo Box */
.demo-box {
  background: var(--bg-card);
  border: 1px solid var(--border-highlight);
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
  position: relative;
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.demo-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-light);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  background-color: var(--accent-red);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 40px;
  margin: 1.5rem 0;
}

.bar {
  width: 4px;
  height: 12px;
  background: var(--primary-light);
  border-radius: 2px;
  animation: wave 1.2s infinite ease-in-out;
}

.bar:nth-child(2) { animation-delay: 0.1s; }
.bar:nth-child(3) { animation-delay: 0.2s; }
.bar:nth-child(4) { animation-delay: 0.3s; }
.bar:nth-child(5) { animation-delay: 0.4s; }
.bar:nth-child(6) { animation-delay: 0.5s; }
.bar:nth-child(7) { animation-delay: 0.6s; }

@keyframes wave {
  0%, 100% { height: 8px; }
  50% { height: 36px; }
}

.demo-quote {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text-main);
  background: var(--bg-dark);
  padding: 1.25rem;
  border-radius: 12px;
  border-left: 4px solid var(--primary);
  margin-bottom: 1.5rem;
}

.demo-output {
  background: rgba(13, 148, 136, 0.1);
  border: 1px solid var(--border-highlight);
  border-radius: 16px;
  padding: 1.25rem;
}

.output-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.output-row:last-child {
  margin-bottom: 0;
}

/* Features Grid */
.features {
  padding: 6rem 0;
  background: rgba(15, 23, 42, 0.5);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 4rem;
}

.section-subtitle {
  color: var(--primary-light);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.feature-icon {
  width: 54px;
  height: 54px;
  background: rgba(13, 148, 136, 0.15);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* App Showcase / Screenshots */
.showcase {
  padding: 6rem 0;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.screenshot-item {
  border-radius: 24px;
  overflow: hidden;
  border: 2px solid var(--border-color);
  box-shadow: 0 15px 30px rgba(0,0,0,0.5);
  transition: var(--transition);
}

.screenshot-item:hover {
  transform: scale(1.03);
  border-color: var(--primary);
}

.screenshot-img {
  width: 100%;
  height: auto;
  display: block;
}

/* Pricing Section */
.pricing {
  padding: 6rem 0;
  background: rgba(30, 41, 59, 0.3);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2.5rem;
  position: relative;
  transition: var(--transition);
}

.price-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 30px var(--primary-glow);
}

.price-tag {
  font-size: 2.5rem;
  font-weight: 800;
  margin: 1rem 0;
}

.price-tag span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.price-features {
  list-style: none;
  margin: 2rem 0;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.price-features li.active {
  color: var(--text-main);
}

.check-icon {
  color: var(--primary-light);
  font-weight: 800;
}

/* FAQ Accordion */
.faq {
  padding: 6rem 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--border-highlight);
}

.faq-question {
  padding: 1.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Footer */
.footer {
  background: #0B1120;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-main);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.75rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.4rem;
  }
  .nav-links {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}