/* ==========================================================================
   NHI DO REALTOR - LUXURY & ELEGANT STYLESHEET
   ========================================================================== */

:root {
  --primary-dark: #071726;
  --primary-navy: #0a2540;
  --primary-blue: #103b60;
  --accent-gold: #c5a880;
  --accent-gold-dark: #9e7943;
  --accent-gold-light: #f4eee3;
  --accent-teal: #0d9488;
  --bg-light: #f8fafc;
  --bg-warm: #fcfbf9;
  --bg-card: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #f1f5f9;
  --border-light: #e2e8f0;
  --border-gold: rgba(197, 168, 128, 0.35);
  --shadow-sm: 0 2px 5px rgba(0,0,0,0.04);
  --shadow-md: 0 10px 25px -5px rgba(10, 37, 64, 0.08), 0 8px 10px -6px rgba(10, 37, 64, 0.04);
  --shadow-lg: 0 20px 35px -5px rgba(10, 37, 64, 0.12), 0 12px 16px -8px rgba(10, 37, 64, 0.06);
  --shadow-gold: 0 10px 25px rgba(197, 168, 128, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-heading: 'Playfair Display', 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', 'Plus Jakarta Sans', -apple-system, sans-serif;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography with elegant serif for headings */
h1, h2, h3, h4, .font-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary-navy);
  letter-spacing: -0.01em;
}

p {
  color: var(--text-muted);
}

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

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

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Badges */
.badge-gold {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-gold-light);
  color: var(--accent-gold-dark);
  border: 1px solid rgba(197, 168, 128, 0.45);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.badge-blue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 59, 96, 0.08);
  color: var(--primary-blue);
  border: 1px solid rgba(16, 59, 96, 0.2);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
}

.section-tag {
  text-align: center;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.35rem;
  text-align: center;
  margin-bottom: 14px;
  color: var(--primary-dark);
}

.section-subtitle {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 46px auto;
  font-size: 1.02rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.94rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: linear-gradient(135deg, #c5a880 0%, #b39263 100%);
  color: #ffffff;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #b8976b 0%, #9e7e50 100%);
  box-shadow: 0 14px 28px rgba(197, 168, 128, 0.4);
}

.btn-secondary {
  background: #ffffff;
  color: var(--primary-navy);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

.btn-outline-gold {
  background: transparent;
  color: var(--accent-gold-dark);
  border: 1.5px solid var(--accent-gold);
}

.btn-outline-gold:hover {
  background: var(--accent-gold);
  color: #ffffff;
}

.btn-zalo {
  background: #0068ff;
  color: #ffffff;
}
.btn-zalo:hover {
  background: #0056d6;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 104, 255, 0.3);
}

/* ==========================================================================
   TOP BAR & NAVIGATION BAR
   ========================================================================== */
.top-bar {
  background: var(--primary-dark);
  color: #cbd5e1;
  font-size: 0.82rem;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.top-bar-item i {
  color: var(--accent-gold);
}

.top-bar-item a:hover {
  color: #ffffff;
}

.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-symbol {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-blue) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  box-shadow: 0 4px 10px rgba(10, 37, 64, 0.15);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.1;
  letter-spacing: -0.3px;
}

.brand-tag {
  font-size: 0.68rem;
  color: var(--accent-gold-dark);
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 26px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  position: relative;
  padding: 6px 0;
}

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

.nav-link:hover, .nav-link.active {
  color: var(--accent-gold-dark);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding: 70px 0 70px 0;
  background: radial-gradient(circle at 10% 20%, rgba(197, 168, 128, 0.08) 0%, rgba(248, 250, 252, 0.7) 90%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

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

.hero-greeting {
  margin-bottom: 14px;
}

.hero-headline {
  font-size: 2.9rem;
  line-height: 1.25;
  margin-bottom: 20px;
  color: var(--primary-dark);
  font-weight: 700;
}

.hero-headline span {
  color: var(--accent-gold-dark);
  position: relative;
  display: inline-block;
  font-style: italic;
}

.hero-description {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.hero-feat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary-navy);
}

.hero-feat-item i {
  color: var(--accent-gold-dark);
  font-size: 1.05rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 26px;
  border-top: 1px solid var(--border-light);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--primary-navy);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.35;
}

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

.portrait-frame {
  position: relative;
  width: 100%;
  max-width: 410px;
  border-radius: var(--radius-xl);
  padding: 10px;
  background: linear-gradient(145deg, #ffffff, rgba(197, 168, 128, 0.35));
  box-shadow: var(--shadow-lg);
}

.portrait-img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  object-position: top center;
  border-radius: calc(var(--radius-xl) - 8px);
}

.portrait-badge {
  position: absolute;
  bottom: 24px;
  left: -20px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(197, 168, 128, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 270px;
}

.badge-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-gold-light);
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.badge-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--primary-navy);
}

.badge-desc {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* ==========================================================================
   ABOUT ME SECTION
   ========================================================================== */
.about-section {
  padding: 90px 0;
  background: #ffffff;
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: center;
}

.about-photo-wrapper {
  position: relative;
}

.about-main-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.about-quote-box {
  position: absolute;
  bottom: -20px;
  left: 20px;
  right: 20px;
  background: rgba(7, 23, 38, 0.92);
  backdrop-filter: blur(10px);
  color: #ffffff;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(197, 168, 128, 0.3);
  box-shadow: var(--shadow-lg);
}

.about-quote-text {
  font-size: 0.88rem;
  font-style: italic;
  line-height: 1.6;
  color: #e2e8f0;
  margin-bottom: 8px;
}

.about-quote-author {
  text-align: right;
  font-size: 0.8rem;
  color: var(--accent-gold);
  font-weight: 700;
}

.about-content-col h2 {
  font-size: 2.15rem;
  color: var(--primary-navy);
  margin-bottom: 16px;
}

.about-lead-intro {
  font-size: 1rem;
  color: var(--text-main);
  line-height: 1.7;
  margin-bottom: 14px;
}

.about-body-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 26px;
}

.about-pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.pillar-card {
  background: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: var(--transition);
}

.pillar-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-sm);
}

.pillar-icon-header {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(197, 168, 128, 0.2);
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.pillar-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 6px;
}

.pillar-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.about-direct-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.96rem;
  color: #9e7943;
}

.about-direct-link:hover {
  color: #b3261e;
  gap: 12px;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-section {
  padding: 90px 0;
  background: var(--bg-light);
}

.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 9px 20px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary-navy);
  color: #ffffff;
  border-color: var(--primary-navy);
  box-shadow: var(--shadow-sm);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

.project-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(197, 168, 128, 0.5);
}

.card-thumb {
  position: relative;
  height: 230px;
  overflow: hidden;
  background: #000000;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.project-card:hover .card-thumb img {
  transform: scale(1.06);
}

.thumb-tag-developer {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(10, 37, 64, 0.88);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.thumb-tag-location {
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.76rem;
  display: flex;
  align-items: center;
  gap: 5px;
}

.card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 6px;
  color: var(--primary-navy);
}

.card-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 18px;
  flex-grow: 1;
}

.project-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 14px 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 18px;
}

.spec-item {
  display: flex;
  flex-direction: column;
}

.spec-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.spec-val {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.spec-val.price {
  color: #b3261e;
  font-size: 1rem;
}

.card-footer-actions {
  display: flex;
  gap: 10px;
}

.card-footer-actions .btn {
  flex: 1;
  font-size: 0.86rem;
  padding: 10px 12px;
}

/* ==========================================================================
   TOOLS SECTION
   ========================================================================== */
.tools-section {
  padding: 90px 0;
  background: #ffffff;
  position: relative;
}

.tool-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 34px;
}

.tool-tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-light);
  border: 1.5px solid var(--border-light);
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
}

.tool-tab-btn:hover {
  border-color: var(--accent-gold);
  color: var(--primary-navy);
}

.tool-tab-btn.active {
  background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-blue) 100%);
  color: #ffffff;
  border-color: var(--primary-navy);
  box-shadow: var(--shadow-md);
}

.tool-panel {
  display: none;
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.tool-panel.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.calc-form-group {
  margin-bottom: 20px;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.calc-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-navy);
}

.calc-val-badge {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-gold-dark);
  background: #ffffff;
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-light);
}

.calc-range-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #cbd5e1;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.calc-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-gold);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  border: 2px solid #ffffff;
  transition: transform 0.15s ease;
}

.calc-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.calc-select, .calc-input {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: #ffffff;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--text-main);
  outline: none;
}

.calc-select:focus, .calc-input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(197, 168, 128, 0.2);
}

.calc-result-box {
  background: linear-gradient(145deg, #ffffff, #fcfbf9);
  border: 1.5px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
}

.result-header {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-main-number {
  text-align: center;
  padding: 16px 0;
  background: rgba(197, 168, 128, 0.12);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.res-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.res-amount {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-gold-dark);
  line-height: 1.2;
}

.res-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 22px;
}

.res-row-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border-light);
}

.res-row-item span:first-child {
  color: var(--text-muted);
}

.res-row-item span:last-child {
  font-weight: 700;
  color: var(--primary-navy);
}

/* Quiz Matcher */
.quiz-container {
  max-width: 800px;
  margin: 0 auto;
}

.quiz-step {
  display: none;
}

.quiz-step.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.quiz-question-title {
  font-size: 1.35rem;
  text-align: center;
  color: var(--primary-navy);
  margin-bottom: 22px;
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}

.quiz-opt-card {
  background: #ffffff;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
}

.quiz-opt-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.quiz-opt-card.selected {
  border-color: var(--accent-gold);
  background: rgba(197, 168, 128, 0.09);
}

.quiz-opt-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(10, 37, 64, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--primary-navy);
}

.quiz-opt-text h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.quiz-opt-text p {
  font-size: 0.78rem;
}

.quiz-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   INSIGHTS (GÓC CHIA SẺ)
   ========================================================================== */
.insights-section {
  padding: 90px 0;
  background: var(--bg-light);
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.insight-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.insight-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.insight-thumb {
  height: 190px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.insight-date {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(4px);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.insight-content {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.insight-category {
  font-size: 0.76rem;
  color: var(--accent-gold-dark);
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.insight-title {
  font-size: 1.18rem;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--primary-navy);
}

.insight-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.read-more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--accent-gold-dark);
}

.read-more-link:hover {
  gap: 10px;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
  padding: 90px 0 50px 0;
  background: linear-gradient(180deg, #071726 0%, #030d17 100%);
  color: #ffffff;
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  margin-bottom: 70px;
}

.contact-info h2 {
  color: #ffffff;
  font-size: 2.3rem;
  margin-bottom: 14px;
}

.contact-info p {
  color: #94a3b8;
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 30px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 34px;
}

.contact-method-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(197, 168, 128, 0.15);
  color: var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  border: 1px solid var(--border-gold);
}

.contact-detail-text span {
  display: block;
  font-size: 0.78rem;
  color: #94a3b8;
  text-transform: uppercase;
}

.contact-detail-text strong {
  font-size: 1.02rem;
  color: #ffffff;
}

.contact-form-card {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-form-title {
  color: #ffffff;
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.contact-form-desc {
  color: #94a3b8;
  font-size: 0.88rem;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  color: #cbd5e1;
  margin-bottom: 6px;
  font-weight: 600;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--accent-gold);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(197, 168, 128, 0.25);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: #64748b;
}

/* ==========================================================================
   MODAL & QUICK VIEW
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(7, 23, 38, 0.78);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-backdrop.open {
  display: flex;
  opacity: 1;
}

.modal-content-card {
  background: #ffffff;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  border-radius: var(--radius-lg);
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,0.2);
  border: none;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: var(--primary-navy);
}

.modal-hero-banner {
  height: 300px;
  width: 100%;
  position: relative;
  background: #000;
}

.modal-hero-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-inner-body {
  padding: 28px;
}

.modal-gallery-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.gallery-thumb-item {
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}

.gallery-thumb-item.active, .gallery-thumb-item:hover {
  border-color: var(--accent-gold);
}

.gallery-thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   STICKY FLOATING WIDGET
   ========================================================================== */
.floating-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fab-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.3rem;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.fab-btn:hover {
  transform: scale(1.1);
}

.fab-zalo {
  background: #0068ff;
}

.fab-phone {
  background: #10b981;
}

.fab-tooltip {
  position: absolute;
  right: 60px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-navy);
  color: #ffffff;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: var(--transition);
}

.fab-btn:hover .fab-tooltip {
  opacity: 1;
}

.toast-msg {
  position: fixed;
  top: 24px;
  right: 24px;
  background: #10b981;
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 3000;
  display: none;
  align-items: center;
  gap: 10px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .top-bar { display: none; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-headline { font-size: 2.3rem; }
  .hero-features { justify-content: center; }
  .hero-cta-group { justify-content: center; }
  .hero-stats { justify-content: center; }
  .portrait-badge { left: 20px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-quote-box { position: static; margin-top: 14px; }
  .calc-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .insights-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .projects-grid { grid-template-columns: 1fr; }
  .about-pillars-grid { grid-template-columns: 1fr; }
  .quiz-options-grid { grid-template-columns: 1fr; }
  .tool-tabs-nav { flex-direction: column; }
  .tool-panel { padding: 18px; }
}