/* ==========================================================================
   iBank.com.vn - Premium Digital Banking & Fintech Domain Showcase Styles
   ========================================================================== */

:root {
  /* Colors */
  --bg-dark-core: #070b14;
  --bg-dark-surface: #0c1527;
  --bg-dark-card: rgba(16, 28, 52, 0.7);
  --bg-dark-glass: rgba(13, 23, 44, 0.65);
  
  --primary-cyan: #00f2fe;
  --primary-blue: #4facfe;
  --primary-deep: #0052d4;
  --accent-gold: #ffe259;
  --accent-gold-dark: #ffa751;
  --accent-emerald: #10b981;
  
  --text-white: #ffffff;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-glass: rgba(255, 255, 255, 0.1);
  --border-cyan-glow: rgba(0, 242, 254, 0.35);
  --border-gold-glow: rgba(255, 226, 89, 0.35);

  --grad-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #0052d4 100%);
  --grad-gold: linear-gradient(135deg, #ffe259 0%, #ffa751 100%);
  --grad-card: linear-gradient(135deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 100%);
  --grad-card-glow: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(79, 172, 254, 0.05) 100%);

  /* Shadows */
  --shadow-glow-cyan: 0 0 30px rgba(0, 242, 254, 0.25);
  --shadow-glow-gold: 0 0 30px rgba(255, 226, 89, 0.25);
  --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.6);

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark-core);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   Background Patterns & Glow Orbs
   ========================================================================== */

.bg-grid-pattern {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(circle at center, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 85%);
}

.bg-glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

.orb-1 {
  width: 500px;
  height: 500px;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, #0052d4, #00f2fe 40%, transparent 70%);
}

.orb-2 {
  width: 400px;
  height: 400px;
  top: 40%;
  right: -100px;
  background: radial-gradient(circle, #0052d4, #4facfe 30%, transparent 70%);
}

.orb-3 {
  width: 450px;
  height: 450px;
  bottom: 5%;
  left: -100px;
  background: radial-gradient(circle, #ffa751 0%, #0052d4 50%, transparent 70%);
  opacity: 0.25;
}

/* ==========================================================================
   Announcement Bar
   ========================================================================== */

.announcement-bar {
  background: linear-gradient(90deg, #061226 0%, #0d214a 50%, #061226 100%);
  border-bottom: 1px solid rgba(0, 242, 254, 0.25);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  position: relative;
  z-index: 50;
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  flex-wrap: wrap;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--primary-cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7);
  animation: pulseGlow 2s infinite;
  display: inline-block;
}

@keyframes pulseGlow {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(0, 242, 254, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
}

.announcement-link {
  color: var(--primary-cyan);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}

.announcement-link:hover {
  color: #ffffff;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0.5rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 42px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 0.35rem 0;
  white-space: nowrap;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all 0.25s ease;
}

.lang-switch-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary-cyan);
}

/* ==========================================================================
   Buttons & Core Components
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.925rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn .icon {
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--grad-primary);
  color: #050b14;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 242, 254, 0.5);
  filter: brightness(1.1);
}

.btn-outline-cyan {
  background: rgba(0, 242, 254, 0.08);
  color: var(--primary-cyan);
  border: 1px solid rgba(0, 242, 254, 0.4);
}

.btn-outline-cyan:hover {
  background: rgba(0, 242, 254, 0.18);
  border-color: var(--primary-cyan);
  transform: translateY(-2px);
  color: #ffffff;
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gold-gradient-text {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding: 4rem 0 5rem;
  position: relative;
  z-index: 10;
  text-align: center;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge-wrapper {
  margin-bottom: 1.5rem;
}

.verified-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.1rem;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.75px;
  color: var(--primary-cyan);
  backdrop-filter: blur(8px);
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary-cyan);
  box-shadow: 0 0 8px var(--primary-cyan);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
  max-width: 900px;
}

.hero-slogan {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 760px;
  margin-bottom: 2.75rem;
  line-height: 1.7;
}

.hero-slogan strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.35rem;
  font-size: 1.15em;
  color: var(--accent-gold);
}

/* 3D Holographic Domain Card */
.domain-card-3d {
  width: 100%;
  max-width: 820px;
  margin-bottom: 2.75rem;
  perspective: 1000px;
}

.domain-card-inner {
  position: relative;
  background: linear-gradient(145deg, rgba(16, 32, 60, 0.85) 0%, rgba(9, 18, 36, 0.95) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-xl);
  padding: 2.75rem 2.25rem;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.7),
    0 0 40px rgba(0, 242, 254, 0.15),
    inset 0 1px 1px rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  transition: transform 0.2s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
}

.domain-card-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-cyan), var(--accent-gold), transparent);
}

.domain-card-inner:hover {
  border-color: rgba(0, 242, 254, 0.6);
  box-shadow: 
    0 30px 60px -12px rgba(0, 0, 0, 0.8),
    0 0 60px rgba(0, 242, 254, 0.25),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
}

.domain-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.card-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: #34d399;
}

.status-live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
}

.card-tag {
  background: rgba(255, 226, 89, 0.12);
  border: 1px solid rgba(255, 226, 89, 0.4);
  color: var(--accent-gold);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
}

.domain-main-display {
  font-family: var(--font-heading);
  font-size: clamp(2.75rem, 7.5vw, 5.5rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: baseline;
  justify-content: center;
  text-shadow: 0 0 40px rgba(0, 242, 254, 0.3);
}

.domain-name-prefix {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
  margin-right: 2px;
}

.domain-name-main {
  color: #ffffff;
}

.domain-name-ext {
  color: var(--primary-cyan);
  font-size: 0.55em;
  margin-left: 4px;
  font-weight: 800;
}

.domain-tagline-pills {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 2.25rem;
}

.tag-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.domain-card-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.feat-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.feat-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--primary-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

.feat-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.feat-item span {
  font-size: 0.775rem;
  color: var(--text-secondary);
}

/* Hero Actions Group */
.hero-actions-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.btn-hero-primary {
  background: var(--grad-primary);
  color: #040914;
  padding: 1rem 2rem;
  font-size: 1.05rem;
  font-weight: 800;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-hero-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 242, 254, 0.55);
}

.btn-hero-phone {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 226, 89, 0.4);
  color: var(--accent-gold);
  padding: 1rem 1.6rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-hero-phone:hover {
  background: rgba(255, 226, 89, 0.15);
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  color: #ffffff;
}

.btn-hero-zalo {
  background: rgba(0, 136, 255, 0.15);
  border: 1px solid rgba(0, 136, 255, 0.5);
  color: #60a5fa;
  padding: 1rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-hero-zalo:hover {
  background: rgba(0, 136, 255, 0.25);
  border-color: #93c5fd;
  color: #ffffff;
  transform: translateY(-3px);
}

.btn-hero-copy {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-hero-copy:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.25);
}

/* Hero Trust Grid */
.hero-trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  width: 100%;
  max-width: 900px;
}

.trust-stat-box {
  background: var(--bg-dark-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  backdrop-filter: blur(12px);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.2rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   Sections Common
   ========================================================================== */

.section {
  padding: 6rem 0;
  position: relative;
  z-index: 10;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header.text-center {
  text-align: center;
}

.section-subtitle {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary-cyan);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.glass-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

/* ==========================================================================
   Strategic Value Cards
   ========================================================================== */

.cards-grid {
  display: grid;
  gap: 1.5rem;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.value-card {
  padding: 2.25rem 1.75rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  position: relative;
}

.value-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 242, 254, 0.4);
  box-shadow: 0 25px 45px -10px rgba(0, 242, 254, 0.15);
}

.card-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  flex-shrink: 0;
}

.card-icon-box svg {
  width: 26px;
  height: 26px;
}

.cyan-glow {
  background: rgba(0, 242, 254, 0.12);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--primary-cyan);
}

.gold-glow {
  background: rgba(255, 226, 89, 0.12);
  border: 1px solid rgba(255, 226, 89, 0.3);
  color: var(--accent-gold);
}

.blue-glow {
  background: rgba(79, 172, 254, 0.12);
  border: 1px solid rgba(79, 172, 254, 0.3);
  color: var(--primary-blue);
}

.purple-glow {
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: #c084fc;
}

.red-glow {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.emerald-glow {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.card-text {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   Domain Appraisal Scorecard
   ========================================================================== */

.appraisal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.appraisal-metric-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(16px);
  transition: border-color 0.25s ease;
}

.appraisal-metric-card:hover {
  border-color: rgba(0, 242, 254, 0.35);
}

.metric-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.metric-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
}

.metric-score {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--accent-gold);
  font-size: 1.15rem;
}

.metric-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 0.85rem;
}

.bar-fill {
  height: 100%;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
}

.fill-100 { width: 100%; }
.fill-99 { width: 99%; }
.fill-98 { width: 98%; }

.metric-detail {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Use Cases Section
   ========================================================================== */

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

.usecase-card {
  background: linear-gradient(180deg, rgba(17, 30, 56, 0.7) 0%, rgba(9, 17, 32, 0.9) 100%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.usecase-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-cyan);
  box-shadow: 0 20px 40px rgba(0, 242, 254, 0.12);
}

.usecase-badge {
  display: inline-block;
  align-self: flex-start;
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary-cyan);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.usecase-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.usecase-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  flex-grow: 1;
}

.usecase-features {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1rem;
}

.usecase-features li {
  font-size: 0.8rem;
  color: #cbd5e1;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.usecase-features li::before {
  content: '✓';
  color: var(--primary-cyan);
  font-weight: 800;
}

/* ==========================================================================
   ROI Calculator Section
   ========================================================================== */

.calculator-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  padding: 3rem;
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.form-group label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.925rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.calc-highlight {
  color: var(--primary-cyan);
  font-size: 1.15rem;
  font-family: var(--font-heading);
}

.range-slider {
  width: 100%;
  height: 8px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  accent-color: var(--primary-cyan);
  cursor: pointer;
}

.range-marks {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.form-select {
  width: 100%;
  background: rgba(8, 15, 28, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: #ffffff;
  font-size: 0.9rem;
}

.form-select option {
  background: #080f1c;
  color: #ffffff;
}

.calc-results {
  background: rgba(7, 13, 24, 0.7);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.primary-result {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.result-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 0.5rem;
}

.result-amount {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--accent-gold);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.result-usd {
  font-size: 0.95rem;
  color: var(--primary-cyan);
  font-weight: 600;
}

.results-subgrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.sub-result {
  background: rgba(255, 255, 255, 0.04);
  padding: 0.85rem;
  border-radius: var(--radius-md);
}

.sub-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.25rem;
}

.sub-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.calc-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
}

/* ==========================================================================
   Process Timeline
   ========================================================================== */

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

.process-step {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  position: relative;
}

.step-num {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 900;
  color: rgba(0, 242, 254, 0.25);
  margin-bottom: 1rem;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Comparison Table
   ========================================================================== */

.table-responsive {
  overflow-x: auto;
  padding: 1.5rem;
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

.comp-table th, .comp-table td {
  padding: 1.25rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.comp-table th {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.comp-table th.highlight-col, .comp-table td.highlight-col {
  background: rgba(0, 242, 254, 0.06);
  color: var(--primary-cyan);
  border-left: 1px solid rgba(0, 242, 254, 0.2);
  border-right: 1px solid rgba(0, 242, 254, 0.2);
}

.comp-table th.highlight-col {
  color: #ffffff;
  font-weight: 800;
  font-size: 1.15rem;
  background: rgba(0, 242, 254, 0.12);
}

/* ==========================================================================
   Direct Contact Hub Section (Call & Zalo Only - 0901333747)
   ========================================================================== */

.contact-hub-card {
  padding: 3.5rem;
  border: 1px solid rgba(0, 242, 254, 0.35);
  position: relative;
  overflow: hidden;
}

.contact-hub-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-gold), var(--primary-cyan), transparent);
}

.contact-hub-header {
  max-width: 780px;
  margin: 0 auto 3rem;
}

.direct-pill {
  border-color: rgba(255, 226, 89, 0.45);
  background: rgba(255, 226, 89, 0.08);
  color: var(--accent-gold);
  margin-bottom: 1.25rem;
}

.direct-pill .pill-dot {
  background-color: var(--accent-gold);
  box-shadow: 0 0 8px var(--accent-gold);
}

.contact-hub-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.contact-hub-subtitle strong {
  color: #ffffff;
}

/* Dual Contact Channels Grid */
.contact-channels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.channel-card {
  background: linear-gradient(145deg, rgba(13, 25, 48, 0.9) 0%, rgba(8, 16, 32, 0.95) 100%);
  border-radius: var(--radius-xl);
  padding: 2.75rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.gold-border {
  border: 1px solid rgba(255, 226, 89, 0.35);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 226, 89, 0.08);
}

.gold-border:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 226, 89, 0.7);
  box-shadow: 0 25px 50px -10px rgba(0, 0, 0, 0.7), 0 0 45px rgba(255, 226, 89, 0.2);
}

.zalo-border {
  border: 1px solid rgba(0, 104, 255, 0.45);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 104, 255, 0.12);
}

.zalo-border:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 104, 255, 0.85);
  box-shadow: 0 25px 50px -10px rgba(0, 0, 0, 0.7), 0 0 45px rgba(0, 104, 255, 0.3);
}

.channel-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.channel-icon svg {
  width: 32px;
  height: 32px;
}

.zalo-glow {
  background: rgba(0, 104, 255, 0.15);
  border: 1px solid rgba(0, 104, 255, 0.4);
  color: #38bdf8;
}

.channel-tag {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  background: rgba(255, 226, 89, 0.12);
  color: var(--accent-gold);
  border: 1px solid rgba(255, 226, 89, 0.3);
  margin-bottom: 0.85rem;
}

.tag-zalo {
  background: rgba(0, 104, 255, 0.12);
  color: #60a5fa;
  border-color: rgba(0, 104, 255, 0.35);
}

.channel-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.channel-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 380px;
  margin-bottom: 2rem;
  line-height: 1.5;
}

.channel-btn-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  flex-wrap: wrap;
}

.btn-call-primary {
  background: var(--grad-gold);
  color: #0c1220;
  font-weight: 800;
  font-size: 1rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(255, 226, 89, 0.35);
  flex-grow: 1;
}

.btn-call-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 226, 89, 0.5);
  filter: brightness(1.05);
}

.btn-zalo-primary {
  background: #0068ff;
  color: #ffffff;
  font-weight: 800;
  font-size: 1rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 104, 255, 0.4);
  flex-grow: 1;
}

.btn-zalo-primary:hover {
  background: #0056d6;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 104, 255, 0.6);
}

.btn-channel-copy {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all 0.25s ease;
}

.btn-channel-copy:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Contact Hub Bottom Assurance */
.contact-hub-bottom {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.bottom-assurance-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.bottom-assurance-item svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--primary-cyan);
  flex-shrink: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border-glass);
  background: #040811;
  padding: 3.5rem 0 2rem;
  position: relative;
  z-index: 10;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.75rem;
}

.footer-logo {
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0.5rem;
}

.footer-slogan {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.footer-contact {
  font-size: 0.95rem;
  color: #cbd5e1;
}

.footer-contact a {
  color: var(--accent-gold);
  font-weight: 700;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1.5rem;
  width: 100%;
}

/* ==========================================================================
   Floating Quick Action Bar
   ========================================================================== */

.floating-quick-bar {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  z-index: 99;
}

.float-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.float-btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

.float-call {
  background: var(--grad-gold);
  color: #0c1220;
}

.float-call:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 10px 30px rgba(255, 226, 89, 0.4);
}

.float-pulse {
  position: absolute;
  inset: -3px;
  border-radius: var(--radius-full);
  border: 2px solid var(--accent-gold);
  animation: floatPulse 2s infinite;
  pointer-events: none;
}

@keyframes floatPulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  100% { transform: scale(1.25); opacity: 0; }
}

.float-zalo {
  background: #0068ff;
  color: #ffffff;
}

.float-zalo:hover {
  background: #0056d6;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 10px 30px rgba(0, 104, 255, 0.5);
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  opacity: 0;
  visibility: hidden;
  background: #0f2347;
  border: 1px solid var(--primary-cyan);
  border-radius: var(--radius-full);
  padding: 0.85rem 1.75rem;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 242, 254, 0.3);
  z-index: 1000;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-container.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
}

.toast-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--primary-cyan);
}

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

@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .usecases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-channels-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .contact-hub-bottom {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .calculator-box {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: auto;
    padding: 0.75rem 0;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .appraisal-grid {
    grid-template-columns: 1fr;
  }
  .usecases-grid {
    grid-template-columns: 1fr;
  }
  .process-timeline {
    grid-template-columns: 1fr;
  }
  .hero-trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .domain-card-features {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .mobile-hide {
    display: none;
  }
  .header-phone-btn {
    display: none;
  }
  .floating-quick-bar {
    bottom: 1.25rem;
    right: 1.25rem;
  }
  .float-label {
    display: none;
  }
  .float-btn {
    padding: 0.85rem;
    border-radius: 50%;
  }
  .domain-card-inner {
    padding: 1.75rem 1.25rem;
  }
  .contact-hub-card {
    padding: 2rem 1.25rem;
  }
  .channel-card {
    padding: 2rem 1.25rem;
  }
  .channel-number {
    font-size: 1.85rem;
  }
}