/* ==========================================================================
   STS FOR AI & TRAINING ✕ Nucleus Hub — Creative Flat Design System
   Dedicated Stylesheet for Egyptian Baccalaureate & AI Portal
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&family=Readex+Pro:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700;800&display=swap');

:root {
  /* Flat Core Palette */
  --flat-bg: #f8fafc;
  --flat-card-bg: #ffffff;
  --flat-dark: #0f172a;
  --flat-dark-surface: #1e293b;
  --flat-gray-light: #f1f5f9;
  --flat-gray-border: #e2e8f0;
  --flat-gray-border-dark: #cbd5e1;
  --flat-text-main: #0f172a;
  --flat-text-muted: #475569;
  --flat-text-light: #64748b;

  /* Brand Flat Accents */
  --flat-blue: #2563eb;
  --flat-blue-dark: #1d4ed8;
  --flat-blue-light: #eff6ff;
  --flat-cyan: #0284c7;
  --flat-cyan-light: #f0f9ff;
  --flat-emerald: #10b981;
  --flat-emerald-dark: #059669;
  --flat-emerald-light: #ecfdf5;
  --flat-amber: #f59e0b;
  --flat-amber-dark: #d97706;
  --flat-amber-light: #fffbeb;
  --flat-violet: #7c3aed;
  --flat-violet-light: #faf5ff;
  --flat-rose: #f43f5e;
  --flat-rose-light: #fff1f2;

  /* Typography Scale */
  --font-heading: 'Readex Pro', 'Cairo', system-ui, -apple-system, sans-serif;
  --font-body: 'Cairo', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Sizing & Borders */
  --flat-radius-sm: 8px;
  --flat-radius-md: 14px;
  --flat-radius-lg: 20px;
  --flat-radius-xl: 28px;
  --flat-radius-full: 9999px;
  
  --flat-border: 2px solid var(--flat-gray-border);
  --flat-border-dark: 2px solid var(--flat-dark);
  --flat-border-blue: 2px solid var(--flat-blue);
  --flat-shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
  --flat-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --flat-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.08);
}

/* Global Reset & Base */
body {
  font-family: var(--font-body) !important;
  font-size: 17.5px !important;
  line-height: 1.75 !important;
  color: var(--flat-text-main) !important;
  background-color: var(--flat-bg) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading) !important;
  color: var(--flat-dark) !important;
  font-weight: 800 !important;
  line-height: 1.35 !important;
  letter-spacing: -0.02em;
}

p {
  color: var(--flat-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.2rem;
}

a {
  color: var(--flat-blue);
  text-decoration: none;
  transition: all 0.2s ease;
}

/* Top Navbar Flat */
.flat-top-navbar {
  background: #ffffff;
  border-bottom: 2px solid var(--flat-gray-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
}

.flat-nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.flat-brand-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.flat-brand-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.flat-brand-logo-icon {
  width: 44px;
  height: 44px;
  background: var(--flat-dark);
  color: #38bdf8;
  border-radius: var(--flat-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  border: 2px solid #38bdf8;
}

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

.flat-brand-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--flat-dark);
  line-height: 1.2;
}

.flat-brand-sub {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--flat-blue);
  letter-spacing: 0.02em;
}

/* Styling for Academic Platform Button */
.flat-academic-platform-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f0f7ff;
  color: #0f172a;
  border: 1.5px solid #93c5fd;
  padding: 6px 14px;
  border-radius: var(--flat-radius-md);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.08);
  white-space: nowrap;
}

.flat-academic-platform-pill i.fa-graduation-cap {
  font-size: 0.95rem;
  color: #1d4ed8;
  background: #dbeafe;
  width: 26px;
  height: 26px;
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.flat-academic-platform-pill .flat-pill-arrow {
  font-size: 0.68rem;
  color: #64748b;
  transition: all 0.2s ease;
}

.flat-academic-platform-pill:hover {
  background: #1d4ed8;
  border-color: #1e40af;
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.22);
}

.flat-academic-platform-pill:hover i.fa-graduation-cap {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff !important;
}

.flat-academic-platform-pill:hover .flat-pill-arrow {
  color: #ffffff !important;
  transform: translate(-1px, -1px);
}

/* Mobile Toggle Hamburger */
.flat-mobile-toggle {
  display: none;
  background: var(--flat-gray-light);
  border: 2px solid var(--flat-gray-border-dark);
  border-radius: var(--flat-radius-sm);
  padding: 10px 14px;
  font-size: 1.3rem;
  color: var(--flat-dark);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.flat-mobile-toggle:hover {
  background: #e2e8f0;
}

.flat-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.flat-nav-links a {
  color: var(--flat-dark);
  font-weight: 700;
  font-size: 0.98rem;
  padding: 8px 14px;
  border-radius: var(--flat-radius-sm);
  transition: all 0.2s ease;
}

.flat-nav-links a:hover {
  background: var(--flat-gray-light);
  color: var(--flat-blue);
}

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

.flat-btn-student-login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--flat-radius-md);
  border: 2px solid var(--flat-gray-border-dark);
  background: #ffffff;
  color: var(--flat-dark);
  font-size: 0.95rem;
  font-weight: 800;
  transition: all 0.2s ease;
}

.flat-btn-student-login:hover {
  background: var(--flat-gray-light);
  border-color: var(--flat-dark);
  color: var(--flat-dark);
}

.flat-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--flat-radius-md);
  background: var(--flat-blue);
  color: #ffffff !important;
  font-size: 1.05rem;
  font-weight: 800;
  border: 2px solid var(--flat-blue-dark);
  box-shadow: 0 4px 0 var(--flat-blue-dark);
  transition: all 0.15s ease;
  cursor: pointer;
}

.flat-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 var(--flat-blue-dark);
}

.flat-btn-primary:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--flat-blue-dark);
}

/* Layout Containers */
.flat-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero Flat Section */
.flat-hero {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 2px solid #cbd5e1;
  border-radius: 24px;
  padding: 56px 48px;
  margin: 28px 0 48px;
  box-shadow: 0 20px 45px -10px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.04);
  position: relative;
  overflow: hidden;
}

.flat-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #1d4ed8, #2563eb, #38bdf8, #10b981);
}

.flat-hero-top-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #f0f9ff;
  color: #0369a1;
  border: 2px solid #38bdf8;
  padding: 10px 22px;
  border-radius: 9999px;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(56, 189, 248, 0.15);
}

.flat-hero-title {
  font-size: 3.8rem !important;
  font-weight: 900 !important;
  color: #0f172a;
  line-height: 1.3 !important;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}

.flat-hero-title span.highlight-blue {
  color: #ffffff !important;
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 50%, #0284c7 100%);
  padding: 6px 24px;
  border-radius: 16px;
  display: inline-block;
  margin-top: 8px;
  border: 2px solid #1d4ed8;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.flat-hero-stand {
  font-size: 1.35rem;
  font-weight: 700;
  color: #334155;
  line-height: 1.6;
  max-width: 960px;
  margin-bottom: 28px;
}

.flat-hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.flat-hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--flat-gray-light);
  border: 2px solid var(--flat-gray-border-dark);
  padding: 10px 18px;
  border-radius: var(--flat-radius-md);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--flat-dark);
}

.flat-hero-chip i {
  color: var(--flat-blue);
  font-size: 1.15rem;
}

.flat-hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.flat-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--flat-radius-md);
  background: var(--flat-gray-light);
  color: var(--flat-dark) !important;
  font-size: 1.05rem;
  font-weight: 800;
  border: 2px solid var(--flat-gray-border-dark);
  transition: all 0.2s ease;
}

.flat-btn-secondary:hover {
  background: #e2e8f0;
  border-color: var(--flat-dark);
}

/* Hero Stats Grid (Flat) */
.flat-hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 24px;
  padding-top: 32px;
  border-top: 2px solid var(--flat-gray-border);
}

.flat-stat-card {
  background: var(--flat-gray-light);
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-lg);
  padding: 24px;
  transition: all 0.2s ease;
}

.flat-stat-card:hover {
  border-color: var(--flat-blue);
  background: #ffffff;
  transform: translateY(-3px);
  box-shadow: var(--flat-shadow-sm);
}

.flat-stat-num {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--flat-blue);
  line-height: 1;
  display: block;
  margin-bottom: 8px;
}

.flat-stat-label {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--flat-dark);
  display: block;
  margin-bottom: 4px;
}

.flat-stat-sub {
  font-size: 0.92rem;
  color: var(--flat-text-light);
  line-height: 1.5;
  display: block;
}

/* Flat Section Blocks */
.flat-section {
  background: #ffffff;
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-xl);
  padding: 48px;
  margin-bottom: 44px;
  box-shadow: var(--flat-shadow-sm);
}

.flat-section-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--flat-gray-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.flat-section-title-wrap {
  max-width: 100%;
  width: 100%;
}

.nowrap-heading {
  white-space: nowrap !important;
  display: block;
}

@media (max-width: 1250px) {
  .nowrap-heading {
    font-size: clamp(1.4rem, 2.6vw, 2.35rem) !important;
  }
}

@media (max-width: 768px) {
  .nowrap-heading {
    font-size: clamp(1.1rem, 4vw, 1.6rem) !important;
  }
}

.flat-sec-badge {
  display: inline-block;
  background: var(--flat-dark);
  color: #38bdf8;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: var(--flat-radius-full);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.flat-section-h2 {
  font-size: 2.35rem !important;
  font-weight: 900 !important;
  color: var(--flat-dark);
  margin-bottom: 12px;
}

.flat-section-lead {
  font-size: 1.18rem;
  line-height: 1.75;
  color: var(--flat-text-muted);
  margin: 0;
}

/* Official Books Showcase (Flat) */
.flat-books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
  margin-top: 24px;
}

.flat-book-card {
  background: #ffffff;
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
  position: relative;
}

.flat-book-card:hover {
  border-color: var(--flat-blue);
  transform: translateY(-4px);
  box-shadow: var(--flat-shadow-lg);
}

.flat-book-card.theme-blue {
  border-top: 6px solid var(--flat-cyan);
}

.flat-book-card.theme-purple {
  border-top: 6px solid var(--flat-violet);
}

.flat-book-card.theme-emerald {
  border-top: 6px solid var(--flat-emerald);
}

.flat-book-tag-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--flat-radius-full);
  font-size: 0.85rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.flat-book-h3 {
  font-size: 1.55rem !important;
  font-weight: 800 !important;
  margin-bottom: 12px;
}

.flat-book-summary {
  font-size: 1.02rem;
  color: var(--flat-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.flat-book-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.flat-book-features-list li {
  font-size: 0.98rem;
  font-weight: 600;
  color: #334155;
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.flat-book-features-list li i {
  color: var(--flat-emerald);
  font-size: 1rem;
}

.flat-book-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: var(--flat-radius-md);
  font-size: 1rem;
  font-weight: 800;
  text-decoration: none;
  border: 2px solid currentColor;
  transition: all 0.2s ease;
}

/* Teaching Methodology (Theory + Practical + Online/Offline) */
.flat-method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.flat-method-card {
  background: var(--flat-gray-light);
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-lg);
  padding: 32px;
  position: relative;
  transition: all 0.2s ease;
}

.flat-method-card:hover {
  background: #ffffff;
  border-color: var(--flat-blue);
  transform: translateY(-4px);
  box-shadow: var(--flat-shadow-md);
}

.flat-method-icon-box {
  width: 60px;
  height: 60px;
  border-radius: var(--flat-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  border: 2px solid currentColor;
}

.flat-method-h3 {
  font-size: 1.5rem !important;
  font-weight: 900 !important;
  margin-bottom: 14px;
}

/* Curriculum Units Tabs & Grid */
.flat-curriculum-controls {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

.flat-tabs-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.flat-tab-btn {
  background: var(--flat-gray-light);
  border: 2px solid var(--flat-gray-border-dark);
  color: var(--flat-dark);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  padding: 12px 24px;
  border-radius: var(--flat-radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.flat-tab-btn:hover {
  background: #e2e8f0;
}

.flat-tab-btn.active {
  background: var(--flat-blue);
  color: #ffffff;
  border-color: var(--flat-blue-dark);
  box-shadow: 0 4px 0 var(--flat-blue-dark);
}

.flat-search-box {
  position: relative;
  width: 100%;
}

.flat-search-input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  font-size: 1.12rem;
  font-family: var(--font-body);
  border: 2px solid var(--flat-gray-border-dark);
  border-radius: var(--flat-radius-md);
  background: #ffffff;
  color: var(--flat-dark);
  box-sizing: border-box;
  transition: all 0.2s ease;
}

.flat-search-input:focus {
  outline: none;
  border-color: var(--flat-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.flat-search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  color: var(--flat-text-light);
}

/* Units Grid */
.flat-units-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 22px;
}

.flat-unit-card {
  background: #ffffff;
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-lg);
  padding: 24px;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.flat-unit-card:hover {
  border-color: var(--flat-blue);
  transform: translateY(-3px);
  box-shadow: var(--flat-shadow-sm);
}

.flat-unit-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.flat-unit-code-badge {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.92rem;
  padding: 4px 12px;
  border-radius: var(--flat-radius-sm);
  background: var(--flat-blue-light);
  color: var(--flat-blue);
  border: 1.5px solid var(--flat-blue);
}

.flat-unit-code-badge.g11 {
  background: var(--flat-violet-light);
  color: var(--flat-violet);
  border-color: var(--flat-violet);
}

.flat-unit-title {
  font-size: 1.35rem !important;
  font-weight: 800 !important;
  margin-bottom: 10px;
  color: var(--flat-dark);
}

.flat-unit-desc {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--flat-text-muted);
  margin-bottom: 16px;
}

.flat-unit-topics-box {
  background: var(--flat-gray-light);
  border-right: 4px solid var(--flat-blue);
  border-radius: var(--flat-radius-sm);
  padding: 12px 16px;
  font-size: 0.95rem;
  line-height: 1.65;
  color: #1e293b;
}

.flat-unit-topics-box strong {
  color: var(--flat-blue-dark);
}

/* Pricing Grid (Flat) */
.flat-pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 32px;
}

.flat-pricing-card {
  background: #ffffff;
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-xl);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.25s ease;
}

.flat-pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--flat-shadow-lg);
}

.flat-pricing-card.featured {
  border: 3px solid var(--flat-blue);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.12);
}

.flat-pricing-card.premium {
  border: 3px solid var(--flat-amber);
  box-shadow: 0 10px 30px rgba(245, 158, 11, 0.12);
}

.flat-pricing-top-ribbon {
  position: absolute;
  top: -16px;
  right: 28px;
  background: var(--flat-blue);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--flat-radius-full);
  border: 2px solid var(--flat-blue-dark);
}

.flat-pricing-top-ribbon.gold {
  background: var(--flat-amber);
  border-color: var(--flat-amber-dark);
}

.flat-pkg-name {
  font-size: 1.7rem !important;
  font-weight: 900 !important;
  color: var(--flat-dark);
  margin-bottom: 8px;
}

.flat-pkg-desc {
  font-size: 1rem;
  color: var(--flat-text-muted);
  line-height: 1.6;
  min-height: 48px;
  margin-bottom: 24px;
}

.flat-price-wrap {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--flat-gray-border);
}

.flat-price-original {
  font-size: 1.05rem;
  color: var(--flat-text-light);
  text-decoration: line-through;
  margin-bottom: 4px;
  display: block;
}

.flat-price-amount {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.flat-price-num {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--flat-dark);
  line-height: 1;
}

.flat-price-curr {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--flat-blue);
}

.flat-price-period {
  font-size: 1rem;
  font-weight: 700;
  color: var(--flat-text-light);
}

.flat-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.flat-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1.05rem;
  color: #1e293b;
  line-height: 1.5;
}

.flat-features-list li i {
  color: var(--flat-emerald);
  font-size: 1.15rem;
  margin-top: 4px;
  flex-shrink: 0;
}

/* Registration Form (Flat) */
.flat-form-container {
  background: #ffffff;
  border: 2px solid var(--flat-gray-border);
  border-radius: var(--flat-radius-xl);
  padding: 48px;
  max-width: 900px;
  margin: 0 auto;
}

.flat-form-header {
  text-align: center;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--flat-gray-border);
}

.flat-step-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--flat-dark);
  margin: 28px 0 18px;
  padding-bottom: 8px;
  border-bottom: 1.5px dashed var(--flat-gray-border-dark);
}

.flat-form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 18px;
}

.flat-form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flat-form-group label {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--flat-dark);
}

.flat-form-group label span.req {
  color: var(--flat-rose);
}

.flat-input, .flat-select {
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: 1.1rem;
  border: 2px solid var(--flat-gray-border-dark);
  border-radius: var(--flat-radius-md);
  background: #ffffff;
  color: var(--flat-dark);
  box-sizing: border-box;
  transition: all 0.2s ease;
}

.flat-input:focus, .flat-select:focus {
  outline: none;
  border-color: var(--flat-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.flat-form-consent {
  margin: 24px 0 32px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  color: #334155;
  line-height: 1.6;
}

.flat-form-consent input {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  cursor: pointer;
}

/* Footer Flat */
.flat-footer {
  background: var(--flat-dark);
  color: #ffffff;
  border-top: 4px solid var(--flat-blue);
  padding: 64px 0 32px;
  margin-top: 80px;
}

.flat-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.flat-footer-h4 {
  font-size: 1.3rem !important;
  font-weight: 800 !important;
  color: #ffffff !important;
  margin-bottom: 20px;
  display: inline-block;
  border-bottom: 3px solid var(--flat-blue);
  padding-bottom: 6px;
}

.flat-footer p {
  color: #94a3b8;
  font-size: 1.02rem;
  line-height: 1.8;
}

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

.flat-footer-links a {
  color: #cbd5e1;
  font-size: 1.02rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.flat-footer-links a:hover {
  color: #38bdf8;
  padding-right: 6px;
}

.flat-footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 24px;
  text-align: center;
  color: #94a3b8;
  font-size: 0.98rem;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .flat-hero-title {
    font-size: 2.5rem !important;
  }
  .flat-nav-links {
    display: none;
  }
  .flat-hero {
    padding: 36px 24px;
  }
  .flat-section {
    padding: 32px 20px;
  }
}

@media (max-width: 640px) {
  .flat-hero-title {
    font-size: 2.1rem !important;
  }
  .flat-hero-stand {
    font-size: 1.15rem;
  }
  .flat-section-h2 {
    font-size: 1.8rem !important;
  }
  .flat-form-container {
    padding: 24px 16px;
  }
}