/* ==========================================================================
   AETHERIA SOLUTIONS - DESIGN SYSTEM & TOKENS
   Corporate Executive Theme: Deep Navy + Accent Teal/Orange + Clean White
   ========================================================================== */

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

:root {
  /* --- Corporate Color Palette --- */
  --color-navy-900: #070D1B;
  --color-navy-800: #0A192F; /* Primary Dark Navy */
  --color-navy-700: #112240; /* Elevated Navy Surface */
  --color-navy-600: #1D3557;
  --color-navy-500: #2B4C7E;

  /* Accent Colors */
  --color-teal-600: #0096B1;
  --color-teal-500: #00B4D8; /* Accent Innovation Teal */
  --color-teal-400: #48CAE4;
  --color-teal-bg: rgba(0, 180, 216, 0.1);

  --color-orange-600: #E5541B;
  --color-orange-500: #FF6B35; /* Primary CTA Orange */
  --color-orange-400: #FF885B;
  --color-orange-bg: rgba(255, 107, 53, 0.1);

  /* Neutrals & Surfaces */
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-subtle: #F1F5F9;
  --color-surface-card: #FFFFFF;
  --color-border: #E2E8F0;
  --color-border-hover: #CBD5E1;

  /* Typography Colors */
  --color-text-primary: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #64748B;
  --color-text-inverse: #FFFFFF;
  --color-text-inverse-muted: #94A3B8;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-navy-800) 0%, var(--color-navy-600) 100%);
  --gradient-hero: linear-gradient(135deg, #0A192F 0%, #112240 60%, #163660 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-teal-500) 0%, #0077B6 100%);
  --gradient-cta: linear-gradient(135deg, var(--color-orange-500) 0%, #F3551A 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(0, 180, 216, 0.15) 0%, transparent 70%);

  /* Typography Tokens */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing Scale */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius Scale */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadow Scale */
  --shadow-sm: 0 1px 2px 0 rgba(10, 25, 47, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(10, 25, 47, 0.08), 0 2px 4px -1px rgba(10, 25, 47, 0.04);
  --shadow-lg: 0 10px 25px -3px rgba(10, 25, 47, 0.08), 0 4px 6px -2px rgba(10, 25, 47, 0.03);
  --shadow-xl: 0 20px 40px -8px rgba(10, 25, 47, 0.12);
  --shadow-hover: 0 20px 35px -5px rgba(10, 25, 47, 0.16), 0 0 0 1px rgba(0, 180, 216, 0.15);
  --shadow-orange: 0 8px 20px -4px rgba(255, 107, 53, 0.35);
  --shadow-teal: 0 8px 20px -4px rgba(0, 180, 216, 0.35);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 4.5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
p { color: var(--color-text-secondary); }

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

button, input, textarea, select {
  font-family: inherit;
  border: none;
  outline: none;
}

/* --- Core Layout & Container --- */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  position: relative;
}

/* --- Button Design System --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn i {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-normal);
}

.btn:hover i {
  transform: translateX(3px);
}

.btn-primary {
  background: var(--gradient-cta);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -4px rgba(255, 107, 53, 0.45);
  background: linear-gradient(135deg, #FF7B48 0%, #E5541B 100%);
}

.btn-teal {
  background: var(--gradient-accent);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-teal);
}

.btn-teal:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -4px rgba(0, 180, 216, 0.45);
}

.btn-navy {
  background-color: var(--color-navy-800);
  color: var(--color-text-inverse);
}

.btn-navy:hover {
  background-color: var(--color-navy-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-primary);
}

.btn-outline:hover {
  border-color: var(--color-navy-800);
  background-color: var(--color-navy-800);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.btn-outline-inverse {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  color: var(--color-text-inverse);
  backdrop-filter: blur(8px);
}

.btn-outline-inverse:hover {
  background-color: var(--color-surface);
  color: var(--color-navy-800);
  border-color: var(--color-surface);
  transform: translateY(-2px);
}

/* --- Badges & Pills --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.badge-teal {
  background-color: var(--color-teal-bg);
  color: var(--color-teal-600);
  border: 1px solid rgba(0, 180, 216, 0.3);
}

.badge-orange {
  background-color: var(--color-orange-bg);
  color: var(--color-orange-600);
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.badge-navy {
  background-color: rgba(10, 25, 47, 0.08);
  color: var(--color-navy-800);
}

/* --- Section Titles --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-12);
}

.section-header .badge {
  margin-bottom: var(--space-3);
}

.section-header h2 {
  margin-bottom: var(--space-4);
  color: var(--color-navy-800);
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

/* --- Cards Design System --- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-8);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 180, 216, 0.3);
}

.card:hover::before {
  opacity: 1;
}

/* --- Icon Box --- */
.icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  font-size: 1.5rem;
  transition: all var(--transition-normal);
}

.icon-box-teal {
  background: var(--color-teal-bg);
  color: var(--color-teal-600);
}

.icon-box-orange {
  background: var(--color-orange-bg);
  color: var(--color-orange-600);
}

.icon-box-navy {
  background: var(--color-navy-800);
  color: var(--color-surface);
}

.card:hover .icon-box-teal {
  background: var(--color-teal-500);
  color: #fff;
  transform: scale(1.08) rotate(-4deg);
}

.card:hover .icon-box-orange {
  background: var(--color-orange-500);
  color: #fff;
  transform: scale(1.08) rotate(4deg);
}

/* --- Form Elements --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
  color: var(--color-navy-800);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: 0.95rem;
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--color-teal-500);
  box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.15);
}

/* --- Toast Notification --- */
.toast-container {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--color-navy-800);
  color: var(--color-text-inverse);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-slow);
  border-left: 4px solid var(--color-teal-500);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.85; }
}