/* SubWise - Master Color Scheme & Design System */
:root {
  /* PRIMARY BRAND COLORS - Professional Blue */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* SUCCESS COLORS - Money Green */
  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-200: #bbf7d0;
  --success-300: #86efac;
  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  --success-800: #166534;
  --success-900: #14532d;

  /* WARNING/ALERT COLORS */
  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-200: #fde68a;
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  --warning-600: #d97706;

  /* ERROR COLORS */
  --error-50: #fef2f2;
  --error-100: #fee2e2;
  --error-400: #f87171;
  --error-500: #ef4444;
  --error-600: #dc2626;

  /* NEUTRAL COLORS - Modern Slate */
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  /* SEMANTIC MAPPINGS */
  --primary: var(--primary-600);
  --primary-dark: var(--primary-700);
  --primary-light: var(--primary-400);
  --primary-subtle: var(--primary-50);

  --success: var(--success-600);
  --success-light: var(--success-100);

  --warning: var(--warning-600);
  --error: var(--error-600);

  /* BACKGROUNDS */
  --bg-primary: #ffffff;
  --bg-secondary: var(--neutral-50);
  --bg-tertiary: var(--neutral-100);
  --bg-accent: var(--primary-50);

  /* TEXT COLORS */
  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-600);
  --text-tertiary: var(--neutral-500);
  --text-muted: var(--neutral-400);
  --text-inverse: #ffffff;

  /* BORDERS */
  --border-light: var(--neutral-200);
  --border-medium: var(--neutral-300);
  --border-dark: var(--neutral-400);

  /* GRADIENTS */
  --gradient-primary: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  --gradient-success: linear-gradient(135deg, var(--success-500) 0%, var(--success-600) 100%);
  --gradient-hero: linear-gradient(135deg, var(--primary-50) 0%, var(--neutral-50) 100%);
  --gradient-subtle: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);

  /* SHADOWS */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-colored: 0 10px 15px -3px rgb(37 99 235 / 0.1), 0 4px 6px -4px rgb(37 99 235 / 0.1);

  /* TYPOGRAPHY */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  /* SPACING */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5rem;

  /* RADIUS */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* EFFECTS */
  --blur-backdrop: blur(16px) saturate(180%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 700; }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); font-weight: 600; }
h4 { font-size: 1.125rem; font-weight: 600; }

p { margin-bottom: var(--space-md); color: var(--text-secondary); }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-dark); }

/* UTILITY CLASSES */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* CONSISTENT BUTTON SYSTEM */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--gradient-primary);
  color: var(--text-inverse);
  padding: var(--space-lg) var(--space-2xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  box-shadow: var(--shadow-colored);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover::before { left: 100%; }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgb(37 99 235 / 0.25), 0 8px 10px -6px rgb(37 99 235 / 0.1);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: var(--space-lg) var(--space-2xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

/* CONSISTENT CARD SYSTEM */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

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

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.card:hover::before { opacity: 0.02; }
.card > * { position: relative; z-index: 1; }

/* FOCUS STATES */
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ANIMATIONS */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.animate-fade-in { animation: fadeIn 0.6s ease-out; }
.animate-slide-up { animation: slideUp 0.6s ease-out; }
.animate-float { animation: float 6s ease-in-out infinite; }

/* RESPONSIVE */
@media (min-width: 768px) {
  .container { padding: 0 var(--space-lg); }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--space-xl); }
}

/* DARK MODE */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: var(--neutral-900);
    --bg-secondary: var(--neutral-800);
    --bg-tertiary: var(--neutral-700);
    --text-primary: var(--neutral-50);
    --text-secondary: var(--neutral-300);
    --text-tertiary: var(--neutral-400);
    --border-light: var(--neutral-700);
    --border-medium: var(--neutral-600);
  }
}

/* MODERN SAAS SECTIONS */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  margin-bottom: var(--space-lg);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

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

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

.feature-item {
  text-align: center;
  padding: var(--space-xl);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
  display: block;
}

/* CLEAN BORDERS */
.border-top {
  border-top: 1px solid var(--border-light);
}

.border-bottom {
  border-bottom: 1px solid var(--border-light);
}

/* PRINT STYLES */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
}