/* ==========================================================================
   ตุ่นมุดท่อ (Toon Mud Tho) - Official Single Page Website Styles
   UI/UX Refinement & Control Tower Final Corrections V1.2
   Brand Palette (Strictly Preserved):
   - Primary Blue: #003E9B (แถบบนและหัวข้อหลัก)
   - Primary Dark: #002D72
   - CTA Orange:   #FD7601 (ปุ่มเน้น / ไฮไลต์ / จุดสังเกต)
   - Background:   #FFFFFF (พื้นขาว สะอาดตา)
   - Dark Navy:    #0B1E3F / #08162B (พื้นหลังส่วนมืดและ Footer)
   - Neutral Gray: #F8FAFC / #F1F5F9 (พื้นหลังสลับ)
   - Text Main:    #1E293B (ตัวหนังสือหลัก คมชัด)
   - Text Muted:   #334155 (ตัวหนังสือรอง คอนทราสต์สูง ผ่านเกณฑ์ WCAG AA)
   - Text Light:   #475569 (ตัวหนังสือประกอบ คอนทราสต์สูง)
   - LINE Green:   #06C755 (LINE Official Account)
   Typography:
   - Font: 'Prompt' (Loopless Thai Font - ไม่มีหัวทั้งหมด)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Prompt:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

:root {
  --primary-blue: #003E9B;
  --primary-blue-dark: #002D72;
  --primary-blue-light: #1E60C6;
  --primary-blue-50: #EEF4FD;
  
  --accent-orange: #FD7601;
  --accent-orange-hover: #E46600;
  --accent-orange-50: #FFF6EC;
  
  --bg-white: #FFFFFF;
  --bg-surface: #F8FAFC;
  --bg-surface-alt: #F1F5F9;
  
  --text-main: #1E293B;
  --text-muted: #334155;
  --text-light: #475569;
  --text-white: #FFFFFF;
  --text-on-accent: #08162B; /* Dark Navy for high-contrast on Green & Orange */
  
  --line-green: #06C755;
  --line-green-hover: #05AB49;
  
  --border-color: #CBD5E1;
  --border-focus: #003E9B;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 62, 155, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 62, 155, 0.12);
  --shadow-orange: 0 6px 20px rgba(253, 118, 1, 0.35);
  --shadow-green: 0 6px 20px rgba(6, 199, 85, 0.35);
  
  --container-max: 1200px;
  --header-height: 78px;
  --transition: all 0.25s ease-in-out;
}

/* Reset & Base Setup - All typography strictly Prompt */
*, *::before, *::after,
html, body,
h1, h2, h3, h4, h5, h6,
p, span, a, button, input, textarea, select, label, div {
  font-family: 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  color: var(--text-main);
  background-color: var(--bg-white);
  line-height: 1.65;
  margin: 0;
  padding: 0;
  padding-bottom: 96px; /* Safe space for sticky bottom CTA */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (min-width: 992px) {
  body {
    padding-bottom: 0;
  }
}

/* Accessibility Focus Indicator (WCAG 2.1) */
:focus-visible {
  outline: 3px solid var(--accent-orange) !important;
  outline-offset: 3px !important;
}

section[id] {
  scroll-margin-top: calc(var(--header-height) + 16px);
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  min-width: 0;
}

/* Common Section Padding */
.section-padding {
  padding: 64px 0;
}

@media (min-width: 768px) {
  .section-padding {
    padding: 84px 0;
  }
}

/* Section Header Typography */
.section-header {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 40px;
  min-width: 0;
}

.section-subtitle {
  display: inline-block;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-blue);
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.65rem, 4.5vw, 2.35rem);
  font-weight: 800;
  color: var(--primary-blue-dark);
  line-height: 1.32;
  margin-bottom: 14px;
  word-break: normal;
  overflow-wrap: break-word;
}

.section-desc {
  font-size: clamp(1.08rem, 2.2vw, 1.2rem);
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
  word-break: normal;
  overflow-wrap: break-word;
}

/* ==========================================================================
   Header & Top Bar
   ========================================================================== */
.top-bar {
  background-color: var(--primary-blue);
  color: var(--text-white);
  font-size: 0.95rem;
  padding: 8px 0;
  display: none; /* Hidden on mobile to keep top clean */
}

@media (min-width: 992px) {
  .top-bar {
    display: block;
  }
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.top-bar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.95);
  font-weight: 500;
  white-space: nowrap;
}

.top-bar-link:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.top-bar-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Main Navigation Header (Clean 1440px Row) */
.main-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 20px;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  max-height: 46px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: none;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-shrink: 0;
}

.nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 8px 4px;
  position: relative;
  white-space: nowrap;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--accent-orange);
  border-radius: var(--radius-full);
}

.header-cta-group {
  display: none;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* High Contrast Button Tokens */
.header-line-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--line-green);
  color: var(--text-on-accent) !important; /* #08162B on #06C755 = 8.02:1 Contrast (AAA) */
  padding: 10px 20px;
  min-height: 48px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 1rem;
  box-shadow: var(--shadow-green);
  white-space: nowrap;
}

.header-line-btn svg {
  fill: var(--text-on-accent);
}

.header-line-btn:hover {
  background: var(--line-green-hover);
  transform: translateY(-2px);
}

.header-phone-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 8px 10px;
  white-space: nowrap;
}

.header-phone-link:hover {
  color: var(--accent-orange);
}

/* Mobile Toggle */
.mobile-toggle-btn {
  display: block;
  padding: 8px;
  color: var(--primary-blue);
  border-radius: var(--radius-sm);
}

.mobile-toggle-btn svg {
  width: 32px;
  height: 32px;
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-nav-drawer.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 310px;
  max-width: 88%;
  height: 100%;
  background: var(--bg-white);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.25);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.mobile-nav-drawer.open .mobile-drawer-content {
  transform: translateX(0);
}

.mobile-drawer-close {
  align-self: flex-end;
  font-size: 2rem;
  line-height: 1;
  color: var(--text-muted);
  padding: 6px;
  cursor: pointer;
}

.mobile-drawer-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-drawer-links a {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  display: block;
}

.mobile-drawer-links a:hover {
  color: var(--accent-orange);
}

@media (min-width: 992px) {
  .nav-menu {
    display: flex;
  }
  .header-cta-group {
    display: flex;
  }
  .mobile-toggle-btn {
    display: none;
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  .header-inner {
    gap: 12px;
  }
  .brand-logo-img {
    max-height: 40px;
  }
  .nav-menu {
    gap: 12px;
  }
  .nav-link {
    font-size: 0.95rem;
    padding: 6px 2px;
  }
  .header-cta-group {
    gap: 8px;
  }
  .header-phone-link {
    font-size: 0.95rem;
    padding: 6px 6px;
  }
  .header-line-btn {
    font-size: 0.92rem;
    padding: 8px 14px;
    min-height: 44px;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, var(--bg-surface) 0%, #FFFFFF 100%);
  padding: 36px 0 54px;
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  min-width: 0;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 48px;
    align-items: center;
  }
}

.hero-content {
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-blue-50);
  color: var(--primary-blue);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  border: 1px solid rgba(0, 62, 155, 0.18);
}

.hero-title {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1.25;
  font-weight: 800;
  color: var(--primary-blue-dark);
  margin-bottom: 16px;
  word-break: normal;
  overflow-wrap: break-word;
  hyphens: auto;
  min-width: 0;
}

.hero-br-desktop {
  display: none;
}

@media (min-width: 992px) {
  .hero-br-desktop {
    display: inline;
  }
}

.hero-title span {
  color: var(--accent-orange);
  display: block;
  font-size: clamp(1.45rem, 4.2vw, 2.35rem);
  line-height: 1.3;
  margin-top: 6px;
  word-break: normal;
  overflow-wrap: break-word;
}

.hero-desc {
  font-size: clamp(1.1rem, 2.2vw, 1.25rem);
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 620px;
  line-height: 1.7;
  word-break: normal;
  overflow-wrap: break-word;
}

.hero-cta-wrap {
  margin-bottom: 20px;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  margin-bottom: 10px;
}

@media (min-width: 576px) {
  .hero-cta-group {
    flex-direction: row;
    align-items: center;
    gap: 16px;
    width: auto;
  }
}

/* Primary LINE Button - High Contrast V1.2 (Dark Navy on Green = 8.02:1) */
.btn-primary-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--line-green);
  color: var(--text-on-accent) !important;
  font-size: 1.125rem;
  font-weight: 800;
  min-height: 52px;
  padding: 14px 26px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-green);
  text-align: center;
  line-height: 1.2;
  transition: var(--transition);
}

.btn-primary-line svg {
  fill: var(--text-on-accent);
}

.btn-primary-line:hover {
  background-color: var(--line-green-hover);
  transform: translateY(-2px);
}

.btn-secondary-phone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--bg-white);
  color: var(--primary-blue) !important;
  border: 2px solid var(--primary-blue);
  font-size: 1.125rem;
  font-weight: 700;
  min-height: 52px;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  text-align: center;
  line-height: 1.2;
  transition: var(--transition);
}

.btn-secondary-phone:hover {
  background-color: var(--primary-blue-50);
  transform: translateY(-2px);
}

.hero-microcopy {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.5;
  margin-top: 10px;
  word-break: normal;
  overflow-wrap: break-word;
}

/* 3 Supporting Benefits */
.hero-benefits {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  margin-top: 22px;
  width: 100%;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #FFFFFF;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.benefit-icon {
  width: 38px;
  height: 38px;
  min-width: 38px;
  border-radius: 8px;
  background: var(--primary-blue-50);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.benefit-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.benefit-text h4 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin: 0;
}

.benefit-text p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 3px 0 0;
}

@media (min-width: 768px) {
  .hero-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    background: transparent;
    padding-top: 24px;
  }
  .benefit-item {
    background: transparent;
    padding: 0;
    border: none;
    box-shadow: none;
    align-items: flex-start;
  }
}

/* Hero Visual Box */
.hero-visual {
  min-width: 0;
  max-width: 100%;
}

.hero-visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  background: #F1F5F9;
  max-width: 100%;
}

.hero-main-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.hero-image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 18px;
  background: rgba(10, 25, 47, 0.92);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-image-caption strong {
  font-size: 1.05rem;
  color: #FFFFFF;
  font-weight: 700;
  display: block;
  margin-bottom: 2px;
}

.hero-image-caption div {
  font-size: 0.92rem;
  color: #E2E8F0;
  line-height: 1.4;
}

.hero-badge-live {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(6, 199, 85, 0.25);
  color: #4ADE80;
  border: 1px solid rgba(74, 222, 128, 0.4);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .hero-image-caption {
    position: relative;
    background: #002D72;
    padding: 12px 14px;
    border-top: none;
  }
}

/* ==========================================================================
   Section 4: Trust / Portfolio Proof Highlight
   ========================================================================== */
.proof-section {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
}

.proof-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-bottom: 30px;
}

@media (min-width: 768px) {
  .proof-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .proof-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.proof-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.proof-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue-light);
}

.proof-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #F1F5F9;
}

.proof-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.proof-card:hover .proof-img {
  transform: scale(1.04);
}

.proof-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 62, 155, 0.92);
  color: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
}

.proof-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.proof-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue-dark);
  margin-bottom: 10px;
  line-height: 1.35;
}

.proof-text {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
  flex-grow: 1;
}

.proof-action-row {
  text-align: center;
  padding-top: 10px;
}

.link-more-gallery {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 10px 18px;
  border-radius: var(--radius-full);
}

.link-more-gallery:hover {
  color: var(--accent-orange);
  text-decoration: underline;
}

/* ==========================================================================
   Section 5: Target Audience Split
   ========================================================================== */
.audience-section {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 840px) {
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.audience-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.audience-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.audience-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
}

.audience-card.residential::before {
  background-color: var(--primary-blue);
}

.audience-card.construction::before {
  background-color: var(--accent-orange);
}

.audience-card-tag {
  display: inline-block;
  font-size: 0.92rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  align-self: flex-start;
}

.audience-card.residential .audience-card-tag {
  background: var(--primary-blue-50);
  color: var(--primary-blue);
}

.audience-card.construction .audience-card-tag {
  background: var(--accent-orange-50);
  color: var(--accent-orange);
}

.audience-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  line-height: 1.35;
}

.audience-card-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 26px;
  line-height: 1.68;
  flex-grow: 1;
}

.audience-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  min-height: 50px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 1.05rem;
  align-self: flex-start;
  margin-top: auto;
}

@media (max-width: 576px) {
  .audience-cta-btn {
    width: 100%;
  }
}

.audience-card.residential .audience-cta-btn {
  background-color: var(--primary-blue);
  color: #FFFFFF !important;
}

.audience-card.residential .audience-cta-btn:hover {
  background-color: var(--primary-blue-dark);
}

/* Orange Button with Dark Navy text = 6.70:1 Contrast (AAA Large / AA Normal) */
.audience-card.construction .audience-cta-btn {
  background-color: var(--accent-orange);
  color: var(--text-on-accent) !important;
}

.audience-card.construction .audience-cta-btn svg {
  fill: var(--text-on-accent);
}

.audience-card.construction .audience-cta-btn:hover {
  background-color: var(--accent-orange-hover);
}

/* ==========================================================================
   Section 6: Services Section (4 Core Services)
   ========================================================================== */
.services-section {
  background-color: #FFFFFF;
}

.services-grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

@media (min-width: 640px) {
  .services-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1140px) {
  .services-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.service-card-clean {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.service-card-clean:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.service-clean-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: #F1F5F9;
}

.service-clean-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.service-card-clean:hover .service-clean-img {
  transform: scale(1.05);
}

.service-clean-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-clean-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary-blue-dark);
  margin-bottom: 10px;
  line-height: 1.35;
}

.service-clean-text {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
  flex-grow: 1;
}

.service-ai-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(8, 22, 43, 0.88);
  color: #FFA54D;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(255, 165, 77, 0.4);
}

/* ==========================================================================
   Section 7: Why Choose Us (3 Points)
   ========================================================================== */
.why-section {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

@media (min-width: 768px) {
  .why-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.why-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue-light);
}

.why-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-blue-50);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.why-icon-box svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.why-card-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}

.why-card-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ==========================================================================
   Section 8: Full Work Gallery
   ========================================================================== */
.gallery-section {
  background-color: #FFFFFF;
}

.gallery-filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.gallery-filter-btn {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  min-height: 44px;
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.gallery-filter-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.gallery-filter-btn.active {
  background: var(--primary-blue);
  color: var(--text-white);
  border-color: var(--primary-blue);
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.gallery-item {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.gallery-item-img-wrap {
  position: relative;
  height: 230px;
  overflow: hidden;
  background: #F1F5F9;
}

.gallery-item-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.gallery-item:hover .gallery-item-img {
  transform: scale(1.04);
}

.gallery-zoom-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 62, 155, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 600;
}

.gallery-item:hover .gallery-zoom-overlay {
  opacity: 1;
}

/* Mobile Touch Cue */
.gallery-touch-badge {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.75);
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  pointer-events: none;
}

@media (min-width: 992px) {
  .gallery-touch-badge {
    display: none;
  }
}

.gallery-item-info {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gallery-item-category {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary-blue);
  text-transform: uppercase;
}

.gallery-item-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin: 0;
}

.gallery-item-caption {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

/* ==========================================================================
   Section 9: Work Process (4 Steps)
   ========================================================================== */
.process-section {
  background-color: var(--primary-blue);
  color: var(--text-white);
  position: relative;
}

.process-section .section-title {
  color: #FFFFFF;
}

.process-section .section-subtitle {
  color: #FFA54D;
}

.process-section .section-desc {
  color: #E2E8F0;
}

.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-bottom: 40px;
}

@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.process-card {
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.process-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.process-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: #FFA54D; /* High contrast on Blue = 4.8:1 */
  line-height: 1;
  margin-bottom: 12px;
}

.process-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #FFFFFF;
  line-height: 1.3;
}

.process-desc {
  font-size: 1.05rem;
  color: #E2E8F0;
  line-height: 1.65;
  margin: 0;
}

.process-cta-wrap {
  text-align: center;
}

/* ==========================================================================
   Section 10: Team Section
   ========================================================================== */
.team-section {
  background-color: var(--bg-white);
}

.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

@media (min-width: 992px) {
  .team-grid {
    grid-template-columns: 1fr 1.15fr;
    gap: 48px;
  }
}

.team-photo-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.team-photo-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.team-content h3 {
  font-size: clamp(1.65rem, 3.5vw, 2.1rem);
  font-weight: 800;
  color: var(--primary-blue-dark);
  margin-bottom: 16px;
  line-height: 1.32;
}

.team-content p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 26px;
  line-height: 1.75;
}

/* ==========================================================================
   Section 11: FAQ Section (5 items)
   ========================================================================== */
.faq-section {
  background-color: var(--bg-surface);
}

.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: left;
  line-height: 1.35;
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  color: var(--primary-blue);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  padding-bottom: 20px;
}

/* ==========================================================================
   Section 12: Contact & Lead Conversion (P0 Message Prep Flow)
   ========================================================================== */
.contact-section {
  background: linear-gradient(135deg, #FFFFFF 0%, var(--bg-surface) 100%);
  position: relative;
  padding-bottom: 100px;
}

@media (min-width: 992px) {
  .contact-section {
    padding-bottom: 84px;
  }
}

.contact-box {
  background: var(--bg-white);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.contact-box-grid {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 992px) {
  .contact-box-grid {
    grid-template-columns: 1.15fr 1fr;
  }
}

.contact-left {
  background-color: var(--primary-blue);
  color: var(--text-white);
  padding: 44px 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-left h3 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.32;
  color: #FFFFFF;
}

.contact-left p {
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.15rem;
  margin-bottom: 26px;
  line-height: 1.68;
}

/* Preparation Checklist */
.checklist-box {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin-bottom: 28px;
}

.checklist-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFA54D;
  margin-bottom: 12px;
}

.checklist-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checklist-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.08rem;
  color: #FFFFFF;
  line-height: 1.5;
}

.checklist-list svg {
  width: 20px;
  height: 20px;
  fill: #10B981;
  flex-shrink: 0;
}

.contact-channel-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-channel-item {
  display: flex;
  align-items: center;
  gap: 16px;
  color: #FFFFFF;
}

.contact-channel-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-channel-icon svg {
  width: 24px;
  height: 24px;
  fill: #FFFFFF;
}

.contact-channel-label {
  font-size: 0.88rem;
  color: #CBD5E1;
  text-transform: uppercase;
}

.contact-channel-val {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
}

.contact-right {
  padding: 44px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-right-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--primary-blue-dark);
  margin-bottom: 8px;
}

.contact-right-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.5;
}

.quick-quote-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  min-height: 52px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  color: var(--text-main);
  background: #FFFFFF;
  transition: var(--transition);
}

.form-control::placeholder {
  color: #64748B;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 62, 155, 0.18);
}

textarea.form-control {
  min-height: 90px;
}

.form-submit-btn {
  background-color: var(--primary-blue);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 1.15rem;
  padding: 14px 20px;
  min-height: 54px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  margin-top: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition);
}

.form-submit-btn:hover {
  background-color: var(--primary-blue-dark);
}

/* Prepared Message Result Box (P0 Real Lead Flow) */
.prepared-message-box {
  margin-top: 24px;
  background: var(--bg-surface);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-md);
  padding: 22px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.prepared-box-header {
  margin-bottom: 14px;
}

.prepared-box-tag {
  display: inline-block;
  background: var(--primary-blue-50);
  color: var(--primary-blue);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
  border: 1px solid rgba(0, 62, 155, 0.2);
}

.prepared-box-instruction {
  font-size: 1.05rem;
  color: var(--text-main);
  margin: 0;
  line-height: 1.5;
}

.prepared-msg-preview {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-main);
  margin-bottom: 16px;
  user-select: all;
}

.prepared-msg-preview .msg-line {
  margin-bottom: 4px;
}

.prepared-msg-preview .msg-line.head {
  color: var(--primary-blue-dark);
  font-weight: 700;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 6px;
}

.prepared-msg-preview .msg-line.foot {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 8px;
}

.fallback-copy-area {
  display: none;
  width: 100%;
  height: 110px;
  padding: 10px;
  margin-bottom: 14px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  color: var(--text-main);
}

.prepared-action-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 12px;
}

@media (min-width: 576px) {
  .prepared-action-group {
    flex-direction: row;
    align-items: center;
  }
}

.btn-action-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-white);
  color: var(--primary-blue) !important;
  border: 2px solid var(--primary-blue);
  padding: 12px 20px;
  min-height: 50px;
  border-radius: var(--radius-full);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-action-copy svg {
  fill: currentColor;
}

.btn-action-copy:hover {
  background: var(--primary-blue-50);
}

.btn-action-copy.copied {
  background: #10B981;
  color: #FFFFFF !important;
  border-color: #10B981;
}

.btn-action-copy.copied svg {
  fill: #FFFFFF;
}

.btn-action-copy.copy-error {
  background: #EF4444;
  color: #FFFFFF !important;
  border-color: #EF4444;
}

.btn-action-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--line-green);
  color: var(--text-on-accent) !important;
  padding: 12px 22px;
  min-height: 50px;
  border-radius: var(--radius-full);
  font-size: 1.05rem;
  font-weight: 800;
  box-shadow: var(--shadow-green);
  transition: var(--transition);
}

.btn-action-line svg {
  fill: var(--text-on-accent);
}

.btn-action-line:hover {
  background: var(--line-green-hover);
  transform: translateY(-2px);
}

.prepared-disclaimer {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 10px;
  border-top: 1px dashed var(--border-color);
  padding-top: 10px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.main-footer {
  background-color: #08162B;
  color: #CBD5E1;
  padding: 56px 0 32px;
  font-size: 1.05rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.footer-brand h4 {
  font-size: 1.45rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.footer-brand p {
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: 14px;
  color: #CBD5E1;
}

.footer-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.footer-links li, .footer-links a {
  font-size: 1.05rem;
  color: #E2E8F0;
  line-height: 1.6;
}

.footer-links a:hover {
  color: var(--accent-orange);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  text-align: center;
  font-size: 0.95rem;
  color: #94A3B8;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   Mobile Sticky Action Bar (Fixed Bottom) V1.2
   ========================================================================== */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 10px 14px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 8px;
  z-index: 999;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
}

@media (max-width: 360px) {
  .mobile-sticky-bar {
    padding: 8px 8px;
    gap: 6px;
  }
}

@media (min-width: 992px) {
  .mobile-sticky-bar {
    display: none;
  }
}

.mobile-bar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 6px;
  min-height: 48px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 0.95rem;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
}

@media (max-width: 360px) {
  .mobile-bar-btn {
    font-size: 0.88rem;
    padding: 10px 4px;
  }
}

.mobile-bar-line {
  background-color: var(--line-green);
  color: var(--text-on-accent) !important; /* 8.02:1 Contrast */
  box-shadow: var(--shadow-green);
}

.mobile-bar-line svg {
  fill: var(--text-on-accent);
}

.mobile-bar-call {
  background-color: var(--bg-surface-alt);
  color: var(--primary-blue) !important;
  border: 1.5px solid var(--border-color);
}

.mobile-bar-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  flex-shrink: 0;
}

/* ==========================================================================
   Lightbox Modal
   ========================================================================== */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 900px;
  width: 100%;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.lightbox-img-wrap {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 70vh;
}

.lightbox-img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.lightbox-caption-box {
  padding: 20px 24px;
}

.lightbox-caption-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.lightbox-caption-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.lightbox-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  background: rgba(0, 0, 0, 0.65);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  z-index: 10;
  cursor: pointer;
}

.lightbox-close-btn:hover {
  background: rgba(0, 0, 0, 0.9);
}
/* ==========================================================================
   SECTION 2: REAL HOUSING PROJECT PORTFOLIO (#portfolio)
   ========================================================================== */
.portfolio-section {
  padding: 64px 0 54px;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-bottom: 32px;
}

@media (min-width: 640px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }
}

@media (min-width: 992px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
  }
}

.portfolio-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 62, 155, 0.12);
  border-color: rgba(0, 62, 155, 0.35);
}

/* 16:9 Aspect Ratio to guarantee NO cropping of project name or entrance text */
.portfolio-img-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #F1F5F9;
  overflow: hidden;
  cursor: pointer;
  display: block;
}

.portfolio-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.portfolio-img-box:hover .portfolio-img {
  transform: scale(1.03);
}

.portfolio-zoom-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 45, 114, 0.88);
  backdrop-filter: blur(4px);
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  pointer-events: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  transition: background-color 0.2s ease;
}

.portfolio-img-box:hover .portfolio-zoom-badge {
  background: rgba(253, 118, 1, 0.95);
}

.portfolio-content {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.portfolio-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.portfolio-dev-tag {
  background: #EEF2FF;
  color: var(--primary-blue);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(0, 62, 155, 0.15);
  white-space: nowrap;
}

.portfolio-loc-text {
  color: var(--text-light);
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.portfolio-loc-text svg {
  color: var(--accent-orange);
  flex-shrink: 0;
}

.portfolio-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-blue-dark);
  margin-bottom: 6px;
  line-height: 1.4;
  word-break: normal;
  overflow-wrap: break-word;
}

.portfolio-work-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
  margin-top: auto;
}

/* Progressive Disclosure: Cards 7-17 hidden initially, shown when expanded */
.portfolio-card-more {
  display: none;
}

.portfolio-grid.show-all .portfolio-card-more {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.portfolio-action-row {
  text-align: center;
  margin-top: 12px;
}

.btn-portfolio-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #FFFFFF;
  color: var(--primary-blue) !important;
  border: 2px solid var(--primary-blue);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 12px 28px;
  min-height: 48px;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 62, 155, 0.08);
  transition: var(--transition);
}

.btn-portfolio-toggle:hover {
  background: var(--primary-blue-50);
  border-color: var(--primary-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 62, 155, 0.15);
}

.portfolio-toggle-icon {
  transition: transform 0.3s ease;
}

.btn-portfolio-toggle.expanded .portfolio-toggle-icon {
  transform: rotate(180deg);
}

/* Footer Company Box (P4 Requirements) */
.footer-company-box {
  margin-top: 16px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-orange);
  font-size: 0.9rem;
  line-height: 1.6;
  color: #E2E8F0;
}

.footer-powered-by {
  font-weight: 700;
  color: var(--accent-orange);
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.footer-company-address {
  color: #CBD5E1;
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-reg-id {
  display: inline-block;
  color: #94A3B8;
  font-size: 0.85rem;
  margin-top: 4px;
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}


/* ==========================================================================
   PHOTO UPLOAD & CLIENT-SIDE COMPRESSION STYLES
   ========================================================================== */
.file-upload-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.file-input-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  border: 0 !important;
}

.file-upload-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: #F8FAFC;
  border: 2px dashed #94A3B8;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
  gap: 6px;
  color: var(--primary-blue);
}

.file-upload-box:hover,
.file-upload-box:focus-within {
  border-color: var(--primary-blue);
  background: #EFF6FF;
}

.file-upload-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-blue-dark);
}

.file-upload-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.file-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.file-preview-grid:empty {
  display: none;
}

.preview-card {
  position: relative;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.preview-thumb {
  width: 100%;
  height: 90px;
  object-fit: cover;
  border-radius: 4px;
  background: #E2E8F0;
}

.preview-info {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.2;
}

.preview-info .compressed-badge {
  display: block;
  color: #166534;
  font-weight: 700;
  background: #DCFCE7;
  padding: 2px 4px;
  border-radius: 3px;
  margin-top: 2px;
  text-align: center;
}

.preview-remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  background: rgba(0, 0, 0, 0.65);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  cursor: pointer;
  border: none;
  line-height: 1;
}

.preview-remove-btn:hover {
  background: #DC2626;
}