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

:root {
  /* LIGHT THEME (STUDIO MCGEE WARM NEUTRAL) */
  --bg-base: #faf8f5;
  --bg-card: #ffffff;
  --bg-accent: #f4f1eb;
  --text-main: #2c2a27;
  --text-muted: #78726a;
  --accent-brass: #bda07a;
  --accent-brass-hover: #a68a64;
  --accent-brass-light: rgba(189, 160, 122, 0.15);
  --border-thin: #e8e2d7;
  --shadow-soft: 0 10px 40px rgba(44, 42, 39, 0.05);
  --shadow-hover: 0 20px 50px rgba(44, 42, 39, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(232, 226, 215, 0.5);
  --glass-blur: 16px;
  
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
}

body.dark-theme {
  /* DARK THEME (LUXURY GLASSMORPHIC GRAPHITE) */
  --bg-base: #101010;
  --bg-card: #181818;
  --bg-accent: #222222;
  --text-main: #f5f2eb;
  --text-muted: #a69e94;
  --accent-brass: #d6be9c;
  --accent-brass-hover: #e5d1b5;
  --accent-brass-light: rgba(214, 190, 156, 0.15);
  --border-thin: #2d2a26;
  --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.6);
  --glass-bg: rgba(24, 24, 24, 0.85);
  --glass-border: rgba(45, 42, 38, 0.5);
}

/* ==================== GLOBAL STYLES ==================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 15px;
  font-weight: 400;
  transition: var(--transition-smooth);
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.02em;
}

/* ==================== STRUCTURAL LAYOUTS ==================== */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

section {
  padding: 80px 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-brass);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-brass-hover);
}

/* ==================== HEADER (NAVBAR) ==================== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-smooth);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

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

.brand-logo a {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.brand-logo span {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-brass);
  margin-top: -3px;
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 30px;
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-main);
  opacity: 0.8;
  position: relative;
  padding: 8px 0;
}

.nav-link:hover {
  opacity: 1;
  color: var(--accent-brass);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1px;
  background-color: var(--accent-brass);
  transition: var(--transition-smooth);
  transform: translateX(-50%);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

/* Premium Buttons */
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--text-main);
  color: var(--bg-base);
  border: 1px solid var(--text-main);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--accent-brass);
}

.btn-outline {
  display: inline-block;
  padding: 12px 28px;
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-thin);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-outline:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background-color: var(--bg-accent);
}

/* ==================== HERO BANNER ==================== */
.hero {
  height: 85vh;
  min-height: 550px;
  position: relative;
  background: linear-gradient(rgba(0,0,0,0.1), rgba(0,0,0,0.3)), url('https://images.unsplash.com/photo-1618221195710-dd6b41faaea6?auto=format&fit=crop&w=1800&q=80') no-repeat center center/cover;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #ffffff;
  padding: 0 20px;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(44, 42, 39, 0.4) 0%, rgba(44, 42, 39, 0.75) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-subtitle {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 20px;
  color: var(--accent-brass);
  font-weight: 500;
  animation: fadeInDown 1s ease;
}

.hero-title {
  font-size: clamp(36px, 6vw, 68px);
  font-family: var(--font-serif);
  line-height: 1.1;
  margin-bottom: 30px;
  font-weight: 300;
  letter-spacing: -0.01em;
  animation: fadeIn 1.2s ease;
}

.hero-title em {
  font-family: var(--font-serif);
  font-style: italic;
}

.hero-btn-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  animation: fadeInUp 1.4s ease;
}

.hero .btn-primary {
  background-color: var(--accent-brass);
  border-color: var(--accent-brass);
  color: #ffffff;
}
.hero .btn-primary:hover {
  background-color: transparent;
  color: #ffffff;
  border-color: #ffffff;
}

.hero .btn-outline {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}
.hero .btn-outline:hover {
  border-color: #ffffff;
  color: var(--accent-brass);
}

/* ==================== HOME INTRO & METRICS ==================== */
.intro-section {
  background-color: var(--bg-accent);
  text-align: center;
}

.section-tag {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent-brass);
  margin-bottom: 15px;
  display: block;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 40px;
  color: var(--text-main);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background-color: var(--accent-brass);
  margin: 15px auto 0;
}

.intro-desc {
  max-width: 700px;
  margin: 0 auto 50px;
  font-size: 17px;
  font-family: var(--font-serif);
  color: var(--text-muted);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.metric-card {
  padding: 30px;
  border: 1px solid var(--border-thin);
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-card);
}

.metric-num {
  font-family: var(--font-serif);
  font-size: 42px;
  color: var(--accent-brass);
  margin-bottom: 10px;
  font-weight: 600;
}

.metric-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

/* ==================== WORK PROCESS ==================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.process-step {
  padding: 30px;
  position: relative;
  transition: var(--transition-smooth);
}

.process-step:hover {
  transform: translateY(-5px);
}

.step-num {
  font-family: var(--font-serif);
  font-size: 64px;
  color: var(--accent-brass-light);
  line-height: 1;
  position: absolute;
  top: 10px;
  left: 20px;
  z-index: 1;
  font-weight: 700;
}

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

.step-title {
  font-size: 20px;
  margin-bottom: 15px;
  color: var(--text-main);
  margin-top: 40px;
}

.step-desc {
  color: var(--text-muted);
  font-size: 14px;
}

/* ==================== REGISTRATION FORM SECTION ==================== */
.register-section {
  background-color: var(--bg-accent);
}

.register-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: center;
}

.register-info h2 {
  font-size: 38px;
  margin-bottom: 20px;
}

.register-info p {
  color: var(--text-muted);
  margin-bottom: 30px;
}

.register-benefit-item {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
}

.register-benefit-item i {
  color: var(--accent-brass);
  font-size: 18px;
  margin-top: 3px;
}

.register-benefit-text h4 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 5px;
}

.register-benefit-text p {
  font-size: 13px;
  margin: 0;
}

/* Glassmorphic Form Card */
.form-card {
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 40px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-soft);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-thin);
  background-color: var(--bg-card);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-brass);
  box-shadow: 0 0 0 3px var(--accent-brass-light);
}

textarea.form-control {
  resize: vertical;
}

/* Input file style */
.file-upload-wrapper {
  position: relative;
  border: 1px dashed var(--accent-brass);
  padding: 20px;
  text-align: center;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  background-color: var(--bg-card);
  transition: var(--transition-smooth);
}

.file-upload-wrapper:hover {
  background-color: var(--bg-accent);
}

.file-upload-wrapper i {
  font-size: 24px;
  color: var(--accent-brass);
  margin-bottom: 10px;
}

.file-upload-wrapper p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.file-upload-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.form-card .btn-primary {
  width: 100%;
  background-color: var(--accent-brass);
  border-color: var(--accent-brass);
  color: white;
  margin-top: 10px;
}

.form-card .btn-primary:hover {
  background-color: var(--accent-brass-hover);
  border-color: var(--accent-brass-hover);
}

/* ==================== PORTFOLIO GALLERY ==================== */
.portfolio-header {
  text-align: center;
  padding-bottom: 40px;
}

.portfolio-header h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.portfolio-header p {
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 18px;
}

.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 50px;
  background-color: var(--bg-accent);
  padding: 25px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-thin);
}

.filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  width: 100px;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  padding: 8px 18px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-thin);
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--accent-brass);
  color: white;
  border-color: var(--accent-brass);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 40px;
}

/* High-End Portfolio Card */
.portfolio-card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
  border: 1px solid var(--border-thin);
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.portfolio-img-box {
  width: 100%;
  height: 280px;
  overflow: hidden;
  position: relative;
}

.portfolio-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.portfolio-card:hover .portfolio-img-box img {
  transform: scale(1.08);
}

.portfolio-tags {
  position: absolute;
  top: 15px;
  left: 15px;
  display: flex;
  gap: 8px;
}

.portfolio-tag {
  padding: 4px 10px;
  background-color: rgba(44, 42, 39, 0.75);
  color: white;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  backdrop-filter: blur(4px);
}

.portfolio-info {
  padding: 30px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.portfolio-card-title {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--text-main);
}

.portfolio-card-desc {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
  flex-grow: 1;
}

.portfolio-readmore {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  color: var(--accent-brass);
  display: flex;
  align-items: center;
  gap: 5px;
}

.portfolio-readmore:hover {
  color: var(--accent-brass-hover);
}

/* ==================== DASHBOARD COMMON LAYOUT ==================== */
.dashboard-wrapper {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 90vh;
}

/* Sidebar Layout */
.sidebar {
  background-color: var(--bg-accent);
  border-right: 1px solid var(--border-thin);
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
}

.sidebar-profile {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--border-thin);
}

.sidebar-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: 15px;
  border: 2px solid var(--accent-brass);
  background-color: white;
}

.sidebar-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
}

.sidebar-role {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--accent-brass);
  letter-spacing: 1.5px;
  margin-top: 3px;
}

.sidebar-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-menu-item a {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px 18px;
  font-size: 14px;
  border-radius: var(--border-radius-sm);
  color: var(--text-main);
  opacity: 0.8;
  font-weight: 500;
}

.sidebar-menu-item.active a, .sidebar-menu-item a:hover {
  background-color: var(--accent-brass-light);
  color: var(--accent-brass);
  opacity: 1;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 20px;
}

.sidebar-logout {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px 18px;
  color: #dc2626 !important;
  font-size: 14px;
  opacity: 0.8;
}

.sidebar-logout:hover {
  opacity: 1;
  background-color: rgba(220, 38, 38, 0.08);
  border-radius: var(--border-radius-sm);
}

/* Content Area */
.dashboard-content {
  padding: 40px;
  background-color: var(--bg-base);
}

.dashboard-header-title {
  font-size: 32px;
  margin-bottom: 10px;
}

.dashboard-header-desc {
  color: var(--text-muted);
  margin-bottom: 40px;
}

/* Master-Detail Split Layout */
.dashboard-split {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 30px;
}

/* Items List Column */
.items-list-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-thin);
  border-radius: var(--border-radius-md);
  padding: 20px;
  max-height: 70vh;
  overflow-y: auto;
}

.list-box-title {
  font-size: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 10px;
}

.list-item-card {
  padding: 15px 20px;
  border: 1px solid var(--border-thin);
  border-radius: var(--border-radius-sm);
  margin-bottom: 15px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.list-item-card:hover, .list-item-card.active {
  border-color: var(--accent-brass);
  box-shadow: var(--shadow-soft);
  background-color: var(--bg-accent);
}

.list-item-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 5px;
}

.list-item-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* Progress Tag */
.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-waiting { background-color: #fef3c7; color: #d97706; } /* Chờ khảo sát */
.status-planning { background-color: #dbeafe; color: #2563eb; } /* Đang lên phương án */
.status-handed { background-color: #e0f2fe; color: #0284c7; } /* Đã bàn giao vẽ */
.status-working { background-color: #f3e8ff; color: #9333ea; } /* Đang thi công */
.status-done { background-color: #d1fae5; color: #059669; } /* Đã hoàn thành */

/* Details Area Column */
.detail-view-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-thin);
  border-radius: var(--border-radius-md);
  padding: 35px;
}

.detail-header {
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 20px;
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: start;
}

.detail-title {
  font-size: 26px;
  margin-bottom: 8px;
}

.detail-meta {
  color: var(--text-muted);
  font-size: 13px;
}

/* Progress Tracker Graphics */
.progress-tracker {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin: 40px 0;
  padding: 0 10px;
}

.progress-tracker::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--border-thin);
  z-index: 1;
}

.progress-tracker-line {
  position: absolute;
  top: 15px;
  left: 0;
  height: 2px;
  background-color: var(--accent-brass);
  z-index: 2;
  transition: var(--transition-smooth);
}

.tracker-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 3;
  width: 70px;
}

.tracker-node {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-card);
  border: 2px solid var(--border-thin);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.tracker-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  margin-top: 10px;
  color: var(--text-muted);
  font-weight: 500;
}

.tracker-step.completed .tracker-node {
  background-color: var(--accent-brass);
  border-color: var(--accent-brass);
  color: white;
}

.tracker-step.completed .tracker-label {
  color: var(--text-main);
  font-weight: 600;
}

.tracker-step.active .tracker-node {
  border-color: var(--accent-brass);
  box-shadow: 0 0 0 4px var(--accent-brass-light);
}

/* Documents Grid */
.docs-section-title {
  font-size: 18px;
  margin-bottom: 20px;
  font-weight: 600;
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 8px;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.doc-card {
  padding: 15px;
  border: 1px solid var(--border-thin);
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-base);
  text-align: center;
  transition: var(--transition-smooth);
}

.doc-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-brass);
}

.doc-icon {
  font-size: 32px;
  color: var(--accent-brass);
  margin-bottom: 10px;
}

.doc-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-date {
  font-size: 10px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.btn-download {
  display: inline-block;
  padding: 6px 15px;
  font-size: 11px;
  background-color: var(--text-main);
  color: var(--bg-base);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.btn-download:hover {
  background-color: var(--accent-brass);
}

/* ==================== FOOTER ==================== */
footer {
  background-color: var(--text-main);
  color: var(--bg-accent);
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-thin);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: white;
  margin-bottom: 15px;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: white;
  margin-bottom: 20px;
}

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-brass);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  color: var(--text-muted);
  font-size: 16px;
}

.social-links a:hover {
  color: var(--accent-brass);
}

/* ==================== ALERTS & UTILITIES ==================== */
.alert {
  padding: 15px 20px;
  border-radius: var(--border-radius-sm);
  margin-bottom: 25px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.alert-success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 48px;
  color: var(--border-thin);
  margin-bottom: 15px;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== RESPONSIVE STYLES ==================== */
@media (max-width: 1024px) {
  .dashboard-wrapper {
    grid-template-columns: 1fr;
  }
  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-thin);
    padding: 30px;
  }
  .sidebar-menu {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 900px) {
  .register-layout {
    grid-template-columns: 1fr;
  }
  .dashboard-split {
    grid-template-columns: 1fr !important;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 600px) {
  .navbar {
    height: 70px;
  }
  .nav-menu {
    display: none; /* In production, you'd have a mobile drawer */
  }
  .hero-title {
    font-size: 36px;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .dashboard-content {
    padding: 20px;
  }
  .detail-view-box {
    padding: 20px;
  }
  .progress-tracker {
    overflow-x: auto;
    padding-bottom: 15px;
  }
  .tracker-step {
    min-width: 80px;
  }
}

/* ==================== WIDGET CHATBOT AI SEARCH NỔI (NOTEBOOKLM) ==================== */
#ai-chat-toggle {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--accent-brass);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(189, 160, 122, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  z-index: 1000;
  transition: var(--transition-smooth);
}

#ai-chat-toggle:hover {
  transform: scale(1.08) translateY(-2px);
  background-color: var(--accent-brass-hover);
  box-shadow: 0 12px 40px rgba(189, 160, 122, 0.5);
}

#ai-chat-window {
  position: fixed;
  bottom: 105px;
  right: 30px;
  width: 400px;
  height: 520px;
  border-radius: var(--border-radius-md);
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-hover);
  display: none;
  flex-direction: column;
  z-index: 1000;
  overflow: hidden;
  transition: var(--transition-smooth);
}

#ai-chat-window.open {
  display: flex;
  animation: fadeInUp 0.4s ease;
}

.ai-chat-header {
  padding: 15px 20px;
  background-color: var(--text-main);
  color: var(--bg-base);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-thin);
}

.ai-chat-body {
  flex-grow: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
  background-color: rgba(250,248,245,0.4);
}

body.dark-theme .ai-chat-body {
  background-color: rgba(16,16,16,0.4);
}

.chat-msg {
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  font-size: 13.5px;
  max-width: 85%;
  line-height: 1.6;
}

.chat-msg.user {
  background-color: var(--accent-brass);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 0;
  box-shadow: 0 4px 12px rgba(189, 160, 122, 0.2);
}

.chat-msg.bot {
  background-color: var(--bg-card);
  color: var(--text-main);
  align-self: flex-start;
  border-bottom-left-radius: 0;
  border: 1px solid var(--border-thin);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.ai-chat-footer {
  padding: 15px;
  border-top: 1px solid var(--border-thin);
  display: flex;
  gap: 10px;
  background-color: var(--bg-card);
}

.ai-chat-input {
  flex-grow: 1;
  padding: 10px 18px;
  border: 1px solid var(--border-thin);
  border-radius: 20px;
  font-size: 13px;
  outline: none;
  background-color: var(--bg-base);
  color: var(--text-main);
  transition: var(--transition-smooth);
}

.ai-chat-input:focus {
  border-color: var(--accent-brass);
}

/* Liên kết trích dẫn NotebookLM */
.citation-link {
  display: inline-block;
  padding: 1px 6px;
  background-color: var(--accent-brass-light);
  color: var(--accent-brass) !important;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-decoration: none;
  margin-left: 4px;
  border: 1px solid rgba(189, 160, 122, 0.25);
  transition: var(--transition-smooth);
}

.citation-link:hover {
  background-color: var(--accent-brass);
  color: white !important;
  border-color: var(--accent-brass);
  transform: translateY(-1px);
}

/* ==================== TELEMETRY TABLE STYLES ==================== */
.telemetry-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
  font-size: 13.5px;
}

.telemetry-table th, .telemetry-table td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid var(--border-thin);
}

.telemetry-table th {
  background-color: var(--bg-accent);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 1px;
}

.telemetry-table tr:hover {
  background-color: rgba(189, 160, 122, 0.04);
}

.action-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}
.action-view { background-color: #e0f2fe; color: #0369a1; }
.action-search { background-color: #f3e8ff; color: #7e22ce; }
.action-comment { background-color: #d1fae5; color: #047857; }
.action-submit { background-color: #fee2e2; color: #b91c1c; }
.action-settings { background-color: #fef3c7; color: #b45309; }

/* Admin Dashboard Tabs Navigation */
.admin-tab-nav {
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--border-thin);
  margin-bottom: 30px;
  padding-bottom: 1px;
}

.admin-tab-btn {
  padding: 12px 24px;
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-muted);
  position: relative;
  transition: var(--transition-smooth);
}

.admin-tab-btn:hover {
  color: var(--text-main);
}

.admin-tab-btn.active {
  color: var(--accent-brass);
  font-weight: 600;
}

.admin-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-brass);
}

/* Media Library Custom CSS */
.media-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  border-color: var(--accent-brass) !important;
}

.media-card img {
  transition: transform 0.4s var(--transition-smooth);
}

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

.btn-copy-url {
  transition: all 0.2s ease;
}

.btn-copy-url:hover {
  background-color: var(--accent-brass-light) !important;
  color: var(--accent-brass) !important;
  border-color: var(--accent-brass) !important;
}

.btn-copy-url:active {
  transform: scale(0.97);
}

/* ==================== SHOP E-COMMERCE STYLES ==================== */
.shop-banner {
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.filter-tab-btn {
  border-color: var(--border-thin) !important;
}

.filter-tab-btn:hover {
  background-color: var(--accent-brass-light) !important;
  color: var(--accent-brass) !important;
  border-color: var(--accent-brass) !important;
}

.filter-tab-btn.active {
  background-color: var(--accent-brass) !important;
  border-color: var(--accent-brass) !important;
  color: white !important;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(189, 160, 122, 0.25);
}

.product-shop-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  border-color: var(--accent-brass) !important;
}

.product-shop-card:hover .prod-img {
  transform: scale(1.05);
}

.btn-shop-view:hover {
  background-color: var(--accent-brass) !important;
  color: white !important;
}

@media (max-width: 768px) {
  .product-detail-split {
    grid-template-columns: 1fr !important;
    gap: 30px !important;
  }
}

/* Homepage Redesigned Sections CSS */
.process-step-new {
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.process-step-new:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 35px rgba(44, 42, 39, 0.1) !important;
  border-color: var(--accent-brass) !important;
}

.process-step-new:hover .step-img {
  transform: scale(1.06);
}

.metric-card {
  transition: all 0.3s ease !important;
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 22px rgba(44, 42, 39, 0.04);
  border-color: var(--accent-brass) !important;
}

@media (max-width: 768px) {
  .intro-split {
    grid-template-columns: 1fr !important;
    gap: 40px !important;
  }
  .intro-floating-badge {
    left: 20px !important;
    bottom: 20px !important;
  }
}

@media (max-width: 480px) {
  #ai-chat-window {
    width: 90%;
    right: 5%;
    left: 5%;
    bottom: 85px;
    height: 420px;
  }
}

/* ==================== ARTICLE DETAIL CONTENT DESIGN ==================== */
.blog-content-body {
  line-height: 1.95;
  color: var(--text-main);
}

.blog-content-body p {
  margin-bottom: 25px;
  text-align: justify;
  font-size: 16px;
}

.blog-content-body h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  margin-top: 45px;
  margin-bottom: 20px;
  color: var(--text-main);
  position: relative;
  padding-bottom: 8px;
}

.blog-content-body h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--accent-brass);
}

.blog-content-body ul, .blog-content-body ol {
  margin-bottom: 25px;
  padding-left: 20px;
}

.blog-content-body li {
  margin-bottom: 10px;
  font-size: 15.5px;
  color: var(--text-main);
}

.article-image-box {
  margin: 40px 0;
  text-align: center;
  background-color: var(--bg-accent);
  padding: 15px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-thin);
  box-shadow: 0 4px 12px rgba(0,0,0,0.015);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-image-box:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.article-image-box img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--border-radius-xs);
  display: block;
  margin: 0 auto;
}

.image-caption {
  font-size: 13.5px;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 12px;
  margin-bottom: 0;
  font-family: var(--font-serif);
}

/* ==================== TỐI ƯU HÓA RESPONSIVE & MOBILE DRAWER (BỔ SUNG) ==================== */

/* Nút Hamburger di động */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: var(--transition-smooth);
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn:hover {
  background-color: var(--bg-accent);
}

/* Sidebar Drawer di động */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  pointer-events: none;
  visibility: hidden;
  transition: visibility 0.4s;
}

.mobile-drawer.open {
  pointer-events: auto;
  visibility: visible;
}

.drawer-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(44, 42, 39, 0.45);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.mobile-drawer.open .drawer-backdrop {
  opacity: 1;
}

.drawer-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  max-width: 85%;
  height: 100%;
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-left: 1px solid var(--glass-border);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  display: flex;
  flex-direction: column;
  z-index: 1;
  padding: 25px 20px;
}

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

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 35px;
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 15px;
}

.drawer-header .brand-logo a {
  font-size: 22px;
}

.drawer-close {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.drawer-close:hover {
  background-color: var(--bg-accent);
  color: var(--accent-brass);
}

.drawer-body {
  flex-grow: 1;
  overflow-y: auto;
  margin-bottom: 25px;
}

.drawer-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.drawer-link {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--text-main);
  letter-spacing: 0.5px;
  display: block;
  transition: var(--transition-smooth);
}

.drawer-link:hover {
  color: var(--accent-brass);
  transform: translateX(5px);
}

.drawer-footer {
  border-top: 1px solid var(--border-thin);
  padding-top: 20px;
}

.drawer-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
}

.drawer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-brass);
  background-color: white;
  object-fit: cover;
}

.drawer-profile-info {
  display: flex;
  flex-direction: column;
}

.drawer-username {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.drawer-role {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--accent-brass);
  letter-spacing: 0.5px;
}

/* Ẩn / hiện các menu & nút ở các khung nhìn */
@media (max-width: 768px) {
  header nav {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .header-user-info .nav-username,
  .header-user-info .nav-logout-btn,
  .nav-actions .nav-login-btn {
    display: none !important;
  }
  .header-user-info {
    gap: 0 !important;
  }
  .filter-bar {
    padding: 15px;
  }
  .filter-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .filter-label {
    width: auto;
  }
}

/* Tối ưu hóa admin tab bar */
.admin-tab-nav {
  display: flex;
  gap: 5px;
  border-bottom: 1px solid var(--border-thin);
  margin-bottom: 30px;
  padding-bottom: 1px;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.admin-tab-nav::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.admin-tab-btn {
  flex-shrink: 0;
}

/* Lưới mét học metrics-grid di động */
@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: 1fr !important;
    gap: 15px !important;
  }
  .shop-banner {
    padding: 60px 15px !important;
  }
  .shop-banner h1 {
    font-size: 28px !important;
  }
  .shop-banner p {
    font-size: 13.5px !important;
  }
  form[action="/shop"] {
    width: 100% !important;
    max-width: 100% !important;
  }
}

/* Form row và grid 1 cột trên điện thoại */
@media (max-width: 500px) {
  .form-row,
  div[style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
    gap: 15px !important;
  }
}

/* Đảm bảo bảng biểu tự cuộn ngang trên di động */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: 15px;
  margin-bottom: 15px;
  border: 1px solid var(--border-thin);
  border-radius: var(--border-radius-sm);
}

.table-responsive table {
  margin-top: 0 !important;
}

/* Responsive Dashboard Sidebar */
@media (max-width: 1024px) {
  .sidebar {
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    flex-wrap: wrap !important;
    gap: 15px !important;
    padding: 20px !important;
  }
  .sidebar-profile {
    margin-bottom: 0 !important;
    padding-bottom: 0 !important;
    border-bottom: none !important;
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    text-align: left !important;
  }
  .sidebar-profile .sidebar-avatar {
    margin-bottom: 0 !important;
    width: 44px !important;
    height: 44px !important;
  }
  .sidebar-menu {
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
    margin-bottom: 0 !important;
  }
  .sidebar-menu-item a {
    padding: 8px 14px !important;
    font-size: 13px !important;
  }
  .sidebar-footer {
    margin-top: 0 !important;
    padding-top: 0 !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
  }
  .sidebar-footer div {
    margin-bottom: 0 !important;
    padding: 8px 12px !important;
  }
  .sidebar-logout {
    padding: 8px 14px !important;
  }
}

@media (max-width: 768px) {
  .sidebar {
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
  }
  .sidebar-profile {
    flex-direction: column !important;
    text-align: center !important;
  }
  .sidebar-profile .sidebar-avatar {
    margin-bottom: 8px !important;
  }
  .sidebar-footer {
    flex-direction: column !important;
    width: 100% !important;
  }
  .sidebar-footer div,
  .sidebar-logout {
    width: 100% !important;
    justify-content: center !important;
  }
  
  /* Responsive Header Navigation Fixes */
  .nav-login-btn {
    display: none !important;
  }
  .mobile-menu-btn {
    display: flex !important;
  }
}

/* Fix universal banner overlapping sticky site header */
.sys-banner ~ header {
  top: 54px !important;
}