/**
 * Concept Creations - Main Stylesheet
 * Brand Identity: Modern Corporate Elegance (Navy, Royal Blue, Champagne Amber)
 * Ultra-fast, lightweight, pure CSS3 (no bulky heavy frameworks)
 */

:root {
  /* Color Palette */
  --color-navy: #0F172A;
  --color-navy-dark: #0A0F1D;
  --color-navy-light: #1E293B;
  --color-blue-primary: #2563EB;
  --color-blue-dark: #1D4ED8;
  --color-blue-light: #3B82F6;
  --color-blue-subtle: #EFF6FF;
  --color-cyan-accent: #0284C7;
  
  --color-gold: #F59E0B;
  --color-gold-dark: #D97706;
  --color-gold-light: #FDE68A;
  
  --color-slate-900: #0F172A;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748B;
  --color-slate-400: #94A3B8;
  --color-slate-300: #CBD5E1;
  --color-slate-200: #E2E8F0;
  --color-slate-100: #F1F5F9;
  --color-slate-50: #F8FAFC;
  --color-white: #FFFFFF;

  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-family-heading: 'Plus Jakarta Sans', 'Inter', -apple-system, sans-serif;

  /* Elevations / Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-gold: 0 10px 25px -5px rgba(245, 158, 11, 0.3);
  --shadow-blue: 0 10px 25px -5px rgba(37, 99, 235, 0.35);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max-width: 1240px;
  --container-narrow-width: 860px;
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --border-radius-pill: 9999px;
}

/* Reset & Normalize */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-base);
  color: var(--color-slate-700);
  background-color: #FFFFFF;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--color-blue-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-blue-dark);
}

ul, ol {
  list-style: none;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  color: var(--color-navy);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.15rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.2rem; }
h5 { font-size: 1rem; }

p {
  margin-bottom: 1.15rem;
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.18rem;
  line-height: 1.7;
  color: var(--color-slate-600);
  font-weight: 400;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-narrow {
  max-width: var(--container-narrow-width);
}

/* Section Spacing */
.section {
  padding-top: 80px;
  padding-bottom: 80px;
}

.section-sm {
  padding-top: 50px;
  padding-bottom: 50px;
}

.section-dark {
  background-color: var(--color-navy);
  color: var(--color-slate-300);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-white);
}

.section-light {
  background-color: var(--color-slate-50);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 55px auto;
}

.section-tagline {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-blue-primary);
  background-color: var(--color-blue-subtle);
  padding: 6px 14px;
  border-radius: var(--border-radius-pill);
  margin-bottom: 14px;
  border: 1px solid rgba(37, 99, 235, 0.15);
}

.section-tagline.gold-tag {
  color: var(--color-gold-dark);
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.25);
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-slate-500);
}

.section-dark .section-subtitle {
  color: var(--color-slate-400);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-family-base);
  font-size: 0.96rem;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--border-radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-blue-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  background-color: var(--color-blue-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -5px rgba(37, 99, 235, 0.45);
}

.btn-gold {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  background: linear-gradient(135deg, #D97706 0%, #B45309 100%);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.btn-secondary:hover {
  background-color: var(--color-navy-light);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-slate-300);
  color: var(--color-navy);
}

.btn-outline:hover {
  border-color: var(--color-blue-primary);
  color: var(--color-blue-primary);
  background-color: var(--color-blue-subtle);
}

.btn-outline-white {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--color-white);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.86rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.08rem;
}

/* Grid Utilities */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.align-center {
  align-items: center;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--border-radius-pill);
  text-transform: uppercase;
}

.badge-primary {
  background-color: var(--color-blue-subtle);
  color: var(--color-blue-primary);
}

.badge-gold {
  background-color: var(--color-gold-light);
  color: #78350F;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-blue { color: var(--color-blue-primary); }
.text-gold { color: var(--color-gold); }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }

/* Subtle Animations */
@keyframes pulseSubtle {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}