/* ==========================================================================
   Grathu Studio - Modern Brand Re-styled Stylesheet
   ========================================================================== */

/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette (HSL) - Rebranded based on Grathu_logo.png (Black & Cyan) */
  --bg-dark: 0 0% 0%;             /* #000000 - Pure Black for seamless logo blending */
  --bg-card: 228 10% 6%;          /* #0b0c10 - Deep Slate Black */
  --bg-card-hover: 228 10% 10%;    /* #14161f - Dark Slate */
  
  --text-primary: 0 0% 98%;       /* #f8fafc */
  --text-secondary: 170 15% 75%;   /* Soft cyan-grey */
  --text-muted: 170 10% 52%;      /* Muted cyan-grey */
  
  --primary: 168 100% 46%;        /* #00E5BC - Bright Neon Cyan/Mint */
  --primary-glow: 168 100% 46% / 0.15;
  
  /* Pillar Accents (Cyan/Mint/Teal/Blue spectrum matching the tech/brain logo) */
  --accent-prod: 187 100% 48%;     /* #00d2ff - Tech Cyan (Productivity) */
  --accent-well: 155 100% 43%;     /* #00e676 - Mint Green (Well-being) */
  --accent-fun: 210 100% 56%;      /* #2196f3 - Electric Blue (Games/Entertainment) */
  
  /* Layout constraints */
  --max-width: 1200px;
  --header-height: 80px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: hsl(var(--bg-dark));
  color: hsl(var(--text-primary));
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Ambient Orbs (Cyan and Deep Blue) */
.ambient-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, hsla(var(--primary), 0.12) 0%, rgba(0,0,0,0) 70%);
  filter: blur(90px);
  pointer-events: none;
  z-index: -1;
  animation: float-glow 20s infinite alternate ease-in-out;
}

.glow-1 {
  top: -100px;
  right: -100px;
}

.glow-2 {
  bottom: 25%;
  left: -200px;
  background: radial-gradient(circle, hsla(var(--accent-well), 0.08) 0%, rgba(0,0,0,0) 70%);
}

.glow-3 {
  bottom: -100px;
  right: -100px;
  background: radial-gradient(circle, hsla(var(--accent-fun), 0.08) 0%, rgba(0,0,0,0) 70%);
}

@keyframes float-glow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography & Headers */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, hsl(var(--text-secondary)) 50%, hsla(var(--primary), 0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-primary {
  background: linear-gradient(135deg, hsl(var(--primary)) 0%, #00d2ff 60%, #1e88e5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  z-index: 1000;
  transition: all var(--transition-fast);
}

header.scrolled {
  background-color: #000000;
  border-bottom-color: hsla(var(--primary), 0.2);
  box-shadow: 0 4px 20px rgba(0, 229, 188, 0.08);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 42px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: hsl(var(--text-secondary));
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: hsl(var(--primary));
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  color: hsl(var(--text-primary));
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, hsl(var(--primary)) 0%, #00b0ff 100%);
  color: #000000; /* Dark text for contrast on bright cyan */
  box-shadow: 0 4px 20px hsla(var(--primary), 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px hsla(var(--primary), 0.5);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.04);
  color: hsl(var(--text-primary));
  border-color: rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: hsla(var(--primary), 0.3);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding-top: calc(var(--header-height) + 5rem);
  padding-bottom: 6rem;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  padding: 0.4rem 1.1rem;
  border-radius: 9999px;
  background-color: hsla(var(--primary), 0.07);
  border: 1px solid hsla(var(--primary), 0.2);
  color: hsl(var(--primary));
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 1.75rem;
  animation: fade-in 1s ease-out;
}

.hero h1 {
  font-size: 4.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
  animation: slide-up 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero p {
  font-size: 1.25rem;
  color: hsl(var(--text-secondary));
  max-width: 650px;
  margin: 0 auto 2.5rem auto;
  animation: slide-up 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  animation: slide-up 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Pillars Section */
.pillars {
  padding: 6rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 4.5rem auto;
}

.section-header h2 {
  font-size: 2.6rem;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-header p {
  color: hsl(var(--text-secondary));
  font-size: 1.1rem;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

/* Glassmorphic Cards */
.card-glass {
  background-color: rgba(11, 12, 16, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 24px;
  padding: 2.5rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}

.card-glass:hover {
  transform: translateY(-8px);
  border-color: hsla(var(--primary), 0.35);
  box-shadow: 0 12px 40px hsla(var(--primary), 0.08);
  background-color: rgba(20, 22, 31, 0.85);
}

.pillar-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
}

.pillar-prod {
  border-left: 4px solid hsl(var(--accent-prod));
}
.pillar-prod .pillar-icon-wrapper {
  background-color: hsla(var(--accent-prod), 0.1);
  color: hsl(var(--accent-prod));
}

.pillar-well {
  border-left: 4px solid hsl(var(--accent-well));
}
.pillar-well .pillar-icon-wrapper {
  background-color: hsla(var(--accent-well), 0.1);
  color: hsl(var(--accent-well));
}

.pillar-fun {
  border-left: 4px solid hsl(var(--accent-fun));
}
.pillar-fun .pillar-icon-wrapper {
  background-color: hsla(var(--accent-fun), 0.1);
  color: hsl(var(--accent-fun));
}

.card-glass h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card-glass p {
  color: hsl(var(--text-secondary));
  font-size: 1rem;
}

/* App Showcase Section */
.apps {
  padding: 6rem 0;
  background-color: rgba(11, 12, 16, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

/* Filters */
.app-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  list-style: none;
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background-color: rgba(255, 255, 255, 0.02);
  color: hsl(var(--text-secondary));
  padding: 0.6rem 1.6rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: hsl(var(--text-primary));
  border-color: rgba(255, 255, 255, 0.15);
  background-color: rgba(255, 255, 255, 0.05);
}

.filter-btn.active {
  background-color: hsl(var(--primary));
  color: #000000;
  border-color: hsl(var(--primary));
  box-shadow: 0 4px 15px hsla(var(--primary), 0.3);
}

/* App Grid & Cards */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2.5rem;
}

.app-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.app-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.badge-prod {
  background-color: hsla(var(--accent-prod), 0.15);
  color: hsl(var(--accent-prod));
}

.badge-well {
  background-color: hsla(var(--accent-well), 0.15);
  color: hsl(var(--accent-well));
}

.badge-fun {
  background-color: hsla(var(--accent-fun), 0.15);
  color: hsl(var(--accent-fun));
}

.app-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.app-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  object-fit: cover;
  box-shadow: 0 4px 15px rgba(0,0,0,0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.app-meta h3 {
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
  color: #ffffff;
}

.app-tagline {
  color: hsl(var(--text-muted));
  font-size: 0.85rem;
  font-weight: 500;
}

.app-body {
  flex-grow: 1;
}

.app-body p {
  color: hsl(var(--text-secondary));
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* Feature list inside App Card */
.app-features {
  list-style: none;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.app-features li {
  font-size: 0.88rem;
  color: hsl(var(--text-secondary));
  padding-left: 1.2rem;
  position: relative;
}

.app-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: hsl(var(--primary));
  font-weight: bold;
}

.app-footer {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-status {
  font-size: 0.85rem;
  font-weight: 600;
  color: hsl(var(--text-muted));
}

/* Contact Section */
.contact {
  padding: 6rem 0;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.contact-info h2 {
  font-size: 2.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.contact-info p {
  color: hsl(var(--text-secondary));
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background-color: hsla(var(--primary), 0.08);
  color: hsl(var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  border: 1px solid hsla(var(--primary), 0.15);
}

.contact-text h4 {
  font-size: 0.9rem;
  color: hsl(var(--text-muted));
  font-weight: 500;
  text-transform: uppercase;
}

.contact-text p {
  font-size: 1.05rem;
  color: hsl(var(--text-primary));
  margin: 0;
}

.contact-text a {
  color: hsl(var(--text-primary));
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-text a:hover {
  color: hsl(var(--primary));
}

/* Form Styles */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: hsl(var(--text-secondary));
}

.form-control {
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  color: hsl(var(--text-primary));
  font-family: inherit;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  background-color: rgba(255, 255, 255, 0.03);
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 3px hsla(var(--primary), 0.25);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-status-msg {
  display: none;
  padding: 1rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 500;
}

.form-status-msg.success {
  background-color: rgba(0, 229, 188, 0.12);
  color: hsl(var(--primary));
  border: 1px solid rgba(0, 229, 188, 0.25);
}

.form-status-msg.error {
  background-color: rgba(33, 150, 243, 0.12);
  color: hsl(var(--accent-fun));
  border: 1px solid rgba(33, 150, 243, 0.25);
}

/* Footer styling */
footer {
  background-color: rgba(11, 12, 16, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding: 5rem 0 2rem 0;
  position: relative;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-about p {
  color: hsl(var(--text-secondary));
  font-size: 0.95rem;
  margin-top: 1.25rem;
  max-width: 320px;
}

.footer-column h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: hsl(var(--text-primary));
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-links a {
  text-decoration: none;
  color: hsl(var(--text-secondary));
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: hsl(var(--text-primary));
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: hsl(var(--text-muted));
  font-size: 0.85rem;
}

.footer-socials {
  display: flex;
  gap: 1.25rem;
}

.social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.02);
  color: hsl(var(--text-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.social-link:hover {
  background-color: hsl(var(--primary));
  color: #000000;
  border-color: hsl(var(--primary));
  transform: translateY(-2px);
}

/* ==========================================================================
   Privacy Policy & Terms Documents Styling (Shared)
   ========================================================================== */
.doc-hero {
  padding-top: calc(var(--header-height) + 5rem);
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.doc-hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.doc-hero p {
  color: hsl(var(--text-secondary));
}

.doc-content {
  padding: 4rem 0 6rem 0;
}

.doc-card {
  background-color: rgba(11, 12, 16, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 20px;
  padding: 3rem;
}

.doc-card h2 {
  font-size: 1.6rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: #ffffff;
}

.doc-card h2:first-of-type {
  margin-top: 0;
}

.doc-card h3 {
  font-size: 1.2rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.doc-card p {
  color: hsl(var(--text-secondary));
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.doc-card ul {
  list-style-type: none;
  margin-bottom: 1.5rem;
}

.doc-card ul li {
  color: hsl(var(--text-secondary));
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 1rem;
}

.doc-card ul li::before {
  content: "•";
  position: absolute;
  left: 0.5rem;
  color: hsl(var(--primary));
  font-weight: bold;
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */

@media (max-width: 992px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 3rem !important;
  }
  
  .hero h1 {
    font-size: 3rem !important;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  
  .footer-about {
    grid-column: span 2;
  }
  
  .doc-card {
    padding: 2rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.5rem !important;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
  }
  
  .footer-about {
    grid-column: span 1;
  }
}

/* Animations */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}