/* Riya AI Website Premium Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color System */
  --bg-primary: #080508;
  --bg-secondary: #120810;
  --bg-card: rgba(18, 8, 16, 0.6);
  --border-color: rgba(235, 91, 152, 0.16);
  --border-focus: rgba(235, 91, 152, 0.5);
  
  --accent-primary: #eb5b98; /* Riya Pink */
  --accent-secondary: #f35f5b; /* Riya Warm Coral */
  --accent-glow: rgba(235, 91, 152, 0.35);
  --accent-glow-secondary: rgba(243, 95, 91, 0.28);
  
  --text-primary: #fff7f9;
  --text-secondary: #e8c4d0;
  --text-muted: #a97b8a;
  
  /* Fonts */
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  /* Grid & Spacing */
  --container-max: 1200px;
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border: 2px solid var(--bg-primary);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* Glow Backdrops */
.glow-backdrop {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(140px);
  z-index: -1;
  opacity: 0.25;
}

.glow-top-left {
  top: -100px;
  left: -100px;
  background: var(--accent-secondary);
}

.glow-bottom-right {
  bottom: -100px;
  right: -100px;
  background: var(--accent-primary);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header Section */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all 0.4s ease;
  display: flex;
  align-items: center;
}

#site-header.scrolled {
  background: rgba(5, 2, 12, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 70px;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Text-Based Glowing Logo */
.logo-link {
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.logo-link .logo-dot {
  color: var(--accent-primary);
  text-shadow: 0 0 12px var(--accent-glow);
}

.nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transition: width 0.3s ease;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.cta-container {
  display: flex;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
  text-align: center;
}

.btn-sm-header {
  padding: 10px 24px;
}

.btn-glow {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--accent-glow), 0 0 15px rgba(122, 64, 242, 0.5);
}

.btn-glow:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 14px 36px;
  font-size: 1.05rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #fff;
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 14px 36px;
  font-size: 1.05rem;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: all 0.3s ease;
}

/* Main Main Section */
main {
  flex: 1;
  padding-top: var(--header-height);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 80px 0 100px 0;
  display: flex;
  align-items: center;
}

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

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-tag {
  background: rgba(235, 91, 152, 0.1);
  border: 1px solid var(--border-color);
  color: var(--accent-primary);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  display: inline-block;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  width: 100%;
}

/* Phone Mockup & App Chat Preview in HTML/CSS */
.phone-mockup {
  width: 320px;
  height: 600px;
  border-radius: 40px;
  border: 12px solid #231d38;
  background: #080508;
  position: relative;
  margin: 0 auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 40px rgba(235, 91, 152, 0.15);
  overflow: hidden;
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 140px;
  height: 25px;
  background: #231d38;
  border-bottom-left-radius: 15px;
  border-bottom-right-radius: 15px;
  z-index: 10;
}

.phone-screen {
  width: 100%;
  height: 100%;
  padding: 45px 0 12px 0;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
}

.chat-header {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.chat-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 10px;
  border: 1px solid rgba(235, 91, 152, 0.3);
}

.chat-header-info {
  display: flex;
  flex-direction: column;
}

.chat-header-name {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.chat-header-status {
  font-size: 0.7rem;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow: 0 0 6px var(--accent-primary);
}

.chat-messages-container {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: flex-end;
}

.chat-bubble-demo {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px 16px 16px 4px;
  padding: 10px 12px;
  max-width: 82%;
  align-self: flex-start;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: floatBubble 6s ease-in-out infinite alternate;
}

.chat-bubble-demo.user {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border: none;
  border-radius: 16px 16px 4px 16px;
  align-self: flex-end;
  color: #fff;
  animation-delay: 1.5s;
}

.chat-text {
  font-size: 0.8rem;
  line-height: 1.4;
}

.chat-time {
  font-size: 0.65rem;
  color: var(--text-muted);
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
  gap: 4px;
}

.chat-bubble-demo.user .chat-time {
  color: rgba(255, 255, 255, 0.75);
}

.tick-icon {
  font-weight: 700;
}

.chat-input-bar {
  margin: 4px 12px 0 12px;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-input-placeholder {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.chat-send-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

@keyframes floatBubble {
  0% { transform: translateY(0); }
  100% { transform: translateY(-5px); }
}

/* Features Section */
.features {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: 2.75rem;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 40px;
  border-radius: 24px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-primary);
  box-shadow: 0 15px 30px rgba(235, 91, 152, 0.05), 0 0 20px rgba(235, 91, 152, 0.08);
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: rgba(235, 91, 152, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent-primary);
  margin-bottom: 28px;
  border: 1px solid rgba(235, 91, 152, 0.2);
}

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 14px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Pricing Section */
.pricing {
  padding: 100px 0;
  position: relative;
}

.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(20, 10, 40, 0.8), rgba(10, 5, 25, 0.8));
  border: 2px solid var(--border-color);
  padding: 48px;
  border-radius: 32px;
  position: relative;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.4), 0 0 30px rgba(235, 91, 152, 0.05);
  overflow: hidden;
}

.pricing-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  background: var(--accent-primary);
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-plan {
  font-size: 2rem;
  margin-bottom: 8px;
}

.pricing-trial-tag {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 28px;
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pricing-features-list li {
  font-size: 1rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.pricing-features-list li::before {
  content: '✓';
  color: var(--accent-primary);
  font-weight: 700;
}

.pricing-disclosure {
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* Download CTA Section */
.home-download {
  padding: 100px 0;
  background: radial-gradient(ellipse at center, rgba(122, 64, 242, 0.08), transparent 70%);
}

.home-download-inner {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.home-download-inner h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.home-download-inner p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 36px;
}

.home-download-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
}

/* Doc Page (Policies & Legal Layout) */
.doc-page {
  padding: 60px 0 100px 0;
}

.doc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 56px;
  max-width: 860px;
  margin: 0 auto;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.doc-title {
  font-size: 3rem;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.doc-meta {
  color: var(--accent-primary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}

.doc-content h2 {
  font-size: 1.5rem;
  margin-top: 36px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.doc-content p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.doc-content ul {
  margin-left: 20px;
  margin-bottom: 24px;
  color: var(--text-secondary);
}

.doc-content li {
  margin-bottom: 10px;
  line-height: 1.6;
}

.doc-content a {
  color: var(--accent-primary);
  border-bottom: 1px dashed var(--accent-primary);
}

.doc-content a:hover {
  color: #fff;
  border-bottom-style: solid;
}

/* FAQ Accordion Styling */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.faq-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item[open] {
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(235,91,152,0.05);
}

.faq-summary {
  padding: 24px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  outline: none;
}

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

.faq-summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--accent-primary);
  transition: transform 0.3s ease;
}

.faq-item[open] .faq-summary::after {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 24px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.support-box {
  background: linear-gradient(135deg, rgba(122,64,242,0.1), rgba(235,91,152,0.1));
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}

.support-box h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.support-box p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Delete Account Page / Form Styles */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 14px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: all 0.3s ease;
}

.form-input:focus {
  border-color: var(--accent-primary);
  background: rgba(255,255,255,0.05);
  box-shadow: 0 0 10px rgba(235, 91, 152, 0.15);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.form-checkbox input {
  margin-top: 5px;
  accent-color: var(--accent-primary);
}

.form-checkbox-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.form-submit-btn {
  width: 100%;
  padding: 16px;
  border-radius: 12px;
  font-size: 1rem;
  margin-top: 16px;
}

.form-message {
  margin-top: 20px;
  padding: 16px;
  border-radius: 12px;
  font-size: 0.95rem;
  display: none;
}

.form-message.success {
  background: rgba(46, 204, 113, 0.1);
  border: 1px solid rgba(46, 204, 113, 0.3);
  color: #2ecc71;
  display: block;
}

.form-message.error {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid rgba(231, 76, 60, 0.3);
  color: #e74c3c;
  display: block;
}

/* Footer Section */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 40px 0;
  margin-top: auto;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 80px;
  margin-bottom: 60px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.footer-tagline {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 280px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.link-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.link-group h4 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.link-group a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.link-group a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 50px;
    text-align: center;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .hero-desc {
    max-width: 600px;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2.2rem;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--bg-primary);
    flex-direction: column;
    padding: 60px 40px;
    gap: 32px;
    transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border-top: 1px solid var(--border-color);
  }
  
  .nav.active {
    left: 0;
  }
  
  .cta-container {
    display: none; /* Hide trial button on small screens headers */
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  
  .doc-card {
    padding: 32px 24px;
  }
  
  .doc-title {
    font-size: 2.25rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .home-download-actions {
    flex-direction: column;
    gap: 12px;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}