/* ==========================================================================
   H2DPrint Landing Page Stylesheet
   Theme: Premium Light Theme with Ice-Blue Gradient & Orange Branding Accents
   Ref: designs/feature_overview_chunhatdung.svg
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens (CSS Variables)
   -------------------------------------------------------------------------- */
:root {
  --primary: #E25E00;            /* H2DPrint Orange Primary */
  --primary-hover: #ff730c;
  --primary-dark: #b84c00;
  --primary-glow: rgba(226, 94, 0, 0.25);
  
  /* Backgrounds */
  --bg-body: #EDF3F7;            /* Light ice-blue base */
  --bg-gradient: linear-gradient(135deg, #EDF3F7 0%, #CBD9E6 55%, #A2B9CD 100%);
  --bg-header: rgba(237, 243, 247, 0.8);
  --bg-card: rgba(255, 255, 255, 0.72);      /* White frosted glass */
  --bg-card-hover: rgba(255, 255, 255, 0.88);
  --bg-input: rgba(255, 255, 255, 0.9);
  
  /* Borders */
  --border-glass: rgba(255, 255, 255, 0.75);  /* Solid light glass borders */
  --border-glass-hover: rgba(255, 255, 255, 0.95);
  --border-focus: rgba(226, 94, 0, 0.45);
  
  /* Typography */
  --text-primary: #0F172A;       /* Slate 900 */
  --text-secondary: #334155;     /* Slate 700 */
  --text-muted: #64748b;         /* Slate 500 */
  --text-brand: #E25E00;         /* Primary brand color text */

  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --container-width: 1200px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
  
  /* Drop shadow filters for cards and visuals */
  --shadow-premium: 0 10px 30px -10px rgba(15, 23, 42, 0.08), 0 1px 3px rgba(15, 23, 42, 0.02);
  --shadow-glow: 0 0 25px rgba(226, 94, 0, 0.15);
}

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

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

body {
  background-color: var(--bg-body);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Subtle decorative grid overlay */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: radial-gradient(rgba(15, 23, 42, 0.02) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

/* Accent Text Utilities */
.text-orange { color: var(--primary); }
.text-purple { color: #6D28D9; }
.text-amber { color: #B45309; }
.text-green { color: #16A34A; }

/* --------------------------------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 1;
}

section {
  padding: 6.5rem 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4.5rem auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.15rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   4. Component Styles (Buttons, Badges, Glassmorphism)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.75rem 1.6rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #F58634 100%);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover) 0%, #ff954d 100%);
  box-shadow: 0 6px 20px rgba(226, 94, 0, 0.45);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--text-primary);
  border-color: rgba(15, 23, 42, 0.08);
  box-shadow: var(--shadow-premium);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: rgba(15, 23, 42, 0.15);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(15, 23, 42, 0.2);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.25);
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 0.9rem 2.2rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.badge-promo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(226, 94, 0, 0.08);
  color: var(--primary);
  border: 1px solid rgba(226, 94, 0, 0.2);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.45rem 1.1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-promo i {
  color: #ff730c;
}

.badge-tag {
  display: inline-block;
  background-color: rgba(226, 94, 0, 0.08);
  color: var(--primary);
  border: 1px solid rgba(226, 94, 0, 0.2);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.35rem 0.9rem;
  border-radius: 4px;
  margin-bottom: 1.25rem;
}

/* Glassmorphism Container */
.visual-glass-container {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

.visual-glass-container::before {
  content: '';
  position: absolute;
  top: -2px; left: -2px; right: -2px; bottom: -2px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.2) 100%);
  border-radius: 26px;
  z-index: -1;
  pointer-events: none;
}

.visual-glass-container:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  box-shadow: 0 15px 35px -10px rgba(15, 23, 42, 0.12);
}

/* --------------------------------------------------------------------------
   5. Header & Navigation
   -------------------------------------------------------------------------- */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  transition: var(--transition-smooth);
  border-bottom: 1px solid transparent;
}

.main-header.scrolled {
  background-color: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03);
  padding: 0.5rem 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  transition: var(--transition-smooth);
}

.main-header.scrolled .header-container {
  height: 68px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 40px;
  width: auto;
  transition: var(--transition-smooth);
}

.main-header.scrolled .logo-img {
  height: 34px;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.logo-text span {
  color: var(--primary);
}

/* Navigation Links */
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background-color: var(--primary);
  transition: var(--transition-smooth);
}

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

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 11rem;
  padding-bottom: 7rem;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 850;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-title .highlight {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary) 30%, #ff8324 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.75rem;
  max-width: 580px;
  font-weight: 500;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.hero-features-preview {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}

.preview-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(226, 94, 0, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 25px 50px -20px rgba(15, 23, 42, 0.15);
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   7. Stats Section
   -------------------------------------------------------------------------- */
.stats-section {
  padding: 3.5rem 0;
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 1rem;
  position: relative;
}

.stat-card:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -1rem;
  top: 20%;
  height: 60%;
  width: 1.5px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.06) 50%, rgba(15, 23, 42, 0) 100%);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* --------------------------------------------------------------------------
   8. Interactive Features Section (Tabs Showcase)
   -------------------------------------------------------------------------- */
.features-section {
  background-color: rgba(255, 255, 255, 0.2);
}

.features-tabs-container {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 3.5rem;
  align-items: start;
}

/* Left Nav Column */
.features-tabs-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 14px;
  padding: 1.35rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-premium);
}

.tab-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateX(5px);
}

.tab-btn.active {
  background: #ffffff;
  border-color: rgba(226, 94, 0, 0.4);
  box-shadow: 0 10px 25px -5px rgba(226, 94, 0, 0.08), 0 1px 3px rgba(226, 94, 0, 0.02);
}

.tab-icon {
  background: rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(15, 23, 42, 0.05);
  width: 46px;
  height: 46px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.tab-btn.active .tab-icon {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 15px var(--primary-glow);
}

.tab-info {
  display: flex;
  flex-direction: column;
}

.tab-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.tab-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.4;
}

/* Right Content Showcase */
.features-tabs-content {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 3rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 25px 50px -25px rgba(15, 23, 42, 0.1);
  min-height: 480px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.tab-content-panel {
  display: none;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
  animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.tab-content-panel.active {
  display: grid;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel-details h3 {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  line-height: 1.3;
  color: var(--text-primary);
}

.panel-details p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.75rem;
  font-weight: 500;
}

.feature-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.feature-bullets li {
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  color: var(--text-secondary);
}

.feature-bullets li i {
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.panel-mockup {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  background-color: rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow-premium);
}

.mockup-svg {
  width: 100%;
  height: auto;
  border-radius: 16px;
}

/* --------------------------------------------------------------------------
   9. Portal Showcase (Mobile Phone Frame mockup)
   -------------------------------------------------------------------------- */
.portal-showcase-section {
  background: radial-gradient(circle at 10% 50%, rgba(226, 94, 0, 0.04) 0%, rgba(0, 0, 0, 0) 50%);
}

.portal-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 5rem;
}

/* 3D phone mockup */
.portal-visual {
  display: flex;
  justify-content: center;
}

.phone-frame-container {
  width: 290px;
  height: 580px;
  border-radius: 40px;
  background-color: #1e293b;
  border: 12px solid #334155;
  box-shadow: 0px 25px 60px -15px rgba(15, 23, 42, 0.2),
              inset 0 0 10px rgba(0, 0, 0, 0.8),
              0 0 0 2px rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Speaker notch */
.phone-speaker {
  width: 110px;
  height: 24px;
  background-color: #334155;
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.phone-speaker::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 4px;
  border-radius: 2px;
  background-color: #0f172a;
}

.phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
  z-index: 1;
}

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

.portal-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  line-height: 1.25;
}

.portal-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 2.75rem;
}

.portal-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 14px;
  padding: 1.35rem;
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

.step-item:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.step-number {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 850;
  color: var(--primary);
  background: rgba(226, 94, 0, 0.08);
  border: 1px solid rgba(226, 94, 0, 0.15);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-text h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.step-text p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   10. Benefits Section (Clean card grid)
   -------------------------------------------------------------------------- */
.benefits-section {
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.15);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 2.5rem 1.75rem;
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

.benefit-card:hover {
  background-color: var(--bg-card-hover);
  border-color: rgba(226, 94, 0, 0.25);
  box-shadow: 0 15px 35px -10px rgba(15, 23, 42, 0.06);
  transform: translateY(-5px);
}

.benefit-icon {
  width: 52px;
  height: 52px;
  background: rgba(226, 94, 0, 0.08);
  border: 1px solid rgba(226, 94, 0, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  transition: var(--transition-smooth);
}

.benefit-card:hover .benefit-icon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
}

.benefit-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.benefit-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   11. FAQ Section (Accordion)
   -------------------------------------------------------------------------- */
.faq-section {
  background-color: rgba(255, 255, 255, 0.25);
  border-top: 1px solid rgba(15, 23, 42, 0.05);
}

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

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

.faq-item:hover {
  border-color: rgba(15, 23, 42, 0.12);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.35rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.faq-item.active {
  background-color: #ffffff;
  border-color: rgba(226, 94, 0, 0.35);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer p {
  padding: 0 1.75rem 1.5rem 1.75rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   12. Contact & Demo Request Section
   -------------------------------------------------------------------------- */
.contact-section {
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  background: radial-gradient(circle at 90% 80%, rgba(226, 94, 0, 0.04) 0%, rgba(0, 0, 0, 0) 55%);
}

.contact-card-container {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--border-glass);
  border-radius: 28px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 30px 60px -25px rgba(15, 23, 42, 0.06);
}

/* Info Column */
.contact-info-block {
  padding: 4.5rem 3.5rem;
  border-right: 1px solid rgba(15, 23, 42, 0.06);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-info-block h2 {
  font-family: var(--font-heading);
  font-size: 2.35rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.contact-info-block p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 3rem;
  font-weight: 500;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.contact-detail-item i {
  font-size: 1.25rem;
  color: var(--primary);
  background: rgba(226, 94, 0, 0.08);
  border: 1px solid rgba(226, 94, 0, 0.15);
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-item h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 0.2rem;
}

.contact-detail-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
  font-weight: 500;
}

/* Form Column */
.contact-form-block {
  padding: 4.5rem 3.5rem;
  background-color: rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
}

.contact-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.form-group label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  background-color: var(--bg-input);
  border: 1.5px solid rgba(15, 23, 42, 0.08);
  border-radius: 8px;
  padding: 0.8rem 1.1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #94a3b8;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  background-color: #ffffff;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(226, 94, 0, 0.15);
}

.form-note {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   13. Footer (Anchoring Deep Slate Footer)
   -------------------------------------------------------------------------- */
.main-footer {
  background-color: #0f172a;  /* Deep dark slate footer */
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 5.5rem 0 0 0;
  position: relative;
  z-index: 10;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.55fr 1fr 1fr;
  gap: 4.5rem;
  margin-bottom: 4.5rem;
}

.footer-brand-info .logo-text {
  color: #fff;
}

.footer-brand-info p {
  color: #94a3b8;
  font-size: 0.9rem;
  margin: 1.25rem 0 2rem 0;
  max-width: 380px;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-links a {
  width: 38px;
  height: 38px;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
}

.social-links a:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 10px var(--primary-glow);
  transform: translateY(-3px);
}

.footer-links-group h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #fff;
  letter-spacing: 0.02em;
}

.footer-links-group ul {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.footer-links-group a {
  font-size: 0.9rem;
  color: #94a3b8;
}

.footer-links-group a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem 0;
  background-color: #0b0f19;
}

.footer-bottom-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #64748b;
}

.footer-bottom-container a {
  color: #94a3b8;
}

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

/* --------------------------------------------------------------------------
   14. Notification Popup Toast
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  top: 2rem;
  right: 2rem;
  transform: translateX(150%); /* Completely hidden off-screen */
  background: #ffffff;
  border: 1px solid rgba(22, 163, 74, 0.3);
  border-radius: 12px;
  padding: 1.1rem 1.6rem;
  box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.12);
  z-index: 1100;
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
  transform: translateX(0);
}

.toast-content {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
}

.toast-content i {
  font-size: 1.6rem;
  margin-top: 0.15rem;
}

.toast-message h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.toast-message p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   15. Responsive Styling (Media Queries)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }
  
  .hero-container {
    gap: 2rem;
  }
  
  .features-tabs-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .portal-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  
  .portal-visual {
    order: 2;
  }
  
  .portal-content {
    order: 1;
  }
  
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-card-container {
    grid-template-columns: 1fr;
  }
  
  .contact-info-block {
    border-right: none;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    padding: 3rem;
  }
  
  .contact-form-block {
    padding: 3rem;
  }
}

@media (max-width: 768px) {
  section {
    padding: 4.5rem 0;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--bg-body);
    background-image: var(--bg-gradient);
    border-left: 1px solid rgba(15, 23, 42, 0.08);
    z-index: 999;
    padding: 6.5rem 2rem 2rem 2rem;
    transition: var(--transition-smooth);
    box-shadow: -10px 0 40px rgba(15, 23, 42, 0.08);
  }
  
  .main-nav.open {
    right: 0;
  }
  
  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }
  
  .nav-btn {
    display: none; /* Hide desktop nav actions on smaller screens */
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3.5rem;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-features-preview {
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .stat-card:nth-child(2)::after {
    display: none;
  }
  
  .tab-content-panel {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .panel-mockup {
    order: 2;
  }
  
  .panel-details {
    order: 1;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.6rem;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .stat-card::after {
    display: none !important;
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom-container {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}