/* ==========================================================================
   Global Font Import (Plus Jakarta Sans)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

/* ==========================================================================
   RewirePath - Brand Design System & Base Styles
   Brand Palette aligned with Flutter App:
   primaryColorLight: #5787DF
   primaryColorDark:  #5C738C
   Typography: 'Plus Jakarta Sans'
   ========================================================================== */

:root {
  /* Brand Core Colors */
  --color-primary: #5787df;
  --color-primary-hover: #4672c8;
  --color-primary-light: rgba(87, 135, 223, 0.12);
  --color-primary-glow: rgba(87, 135, 223, 0.35);
  --color-primary-subtle: #ebf2ff;
  
  --color-primary-dark: #5c738c;
  --color-primary-dark-hover: #4b5e73;
  --color-primary-dark-light: rgba(92, 115, 140, 0.15);

  --color-secondary: #3b82f6;
  --color-accent: #6366f1;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Backgrounds & Surfaces - Light Mode */
  --bg-main: #f8fafe;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-surface-glass: rgba(255, 255, 255, 0.88);
  --bg-subtle: #f1f5fc;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-code: #f1f5f9;

  /* Text & Typography */
  --text-main: #182230;
  --text-muted: #5c738c;
  --text-light: #8fa0b5;
  --text-inverse: #ffffff;

  /* Borders & Dividers */
  --border-subtle: #e5ecf6;
  --border-hover: #cbd8ec;
  --border-focus: #5787df;
  --border-glass: rgba(229, 236, 246, 0.85);

  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgba(16, 24, 40, 0.05);
  --shadow-md: 0 4px 8px -2px rgba(16, 24, 40, 0.06), 0 2px 4px -2px rgba(16, 24, 40, 0.04);
  --shadow-lg: 0 12px 16px -4px rgba(16, 24, 40, 0.08), 0 4px 6px -2px rgba(16, 24, 40, 0.03);
  --shadow-xl: 0 20px 24px -4px rgba(16, 24, 40, 0.08), 0 8px 8px -4px rgba(16, 24, 40, 0.03);
  --shadow-glow: 0 0 35px -5px rgba(87, 135, 223, 0.35);
  --shadow-glass: 0 8px 32px 0 rgba(87, 135, 223, 0.08);

  /* Typography Specs - Entirely Plus Jakarta Sans */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1240px;
  --header-height: 76px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --color-primary: #6b96e6;
  --color-primary-hover: #5787df;
  --color-primary-light: rgba(107, 150, 230, 0.18);
  --color-primary-glow: rgba(107, 150, 230, 0.4);
  --color-primary-subtle: #121c2c;

  --color-primary-dark: #8ba2bd;
  --color-primary-dark-hover: #a2b7cf;

  --bg-main: #0b111a;
  --bg-surface: #111a28;
  --bg-surface-elevated: #182436;
  --bg-surface-glass: rgba(17, 26, 40, 0.88);
  --bg-subtle: #152031;
  --bg-card: rgba(19, 29, 46, 0.9);
  --bg-card-hover: rgba(27, 40, 62, 0.95);
  --bg-code: #0d1521;

  --text-main: #f0f4fa;
  --text-muted: #94a7be;
  --text-light: #677b94;
  --text-inverse: #0b111a;

  --border-subtle: #1d2a3f;
  --border-hover: #2e415f;
  --border-focus: #6b96e6;
  --border-glass: rgba(255, 255, 255, 0.08);

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 8px -2px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 16px -4px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px -5px rgba(107, 150, 230, 0.4);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
}

/* ==========================================================================
   CSS Reset & Base
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
}

section[id], div[id] {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol {
  list-style: none;
}

/* ==========================================================================
   Typography (Plus Jakarta Sans)
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.4rem, 4.5vw + 1rem, 4.2rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(2rem, 3vw + 0.5rem, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
}

h3 {
  font-size: clamp(1.35rem, 1.8vw + 0.5rem, 1.85rem);
  font-weight: 700;
}

h4 {
  font-size: 1.3rem;
  font-weight: 700;
}

h5 {
  font-size: 1.15rem;
  font-weight: 600;
}

h6 {
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-primary);
}

p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

p.lead {
  font-size: 1.22rem;
  line-height: 1.62;
  color: var(--text-muted);
  font-weight: 500;
}

.gradient-text {
  background: linear-gradient(135deg, #5787df 0%, #3b66c4 60%, #5c738c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .gradient-text {
  background: linear-gradient(135deg, #87adfc 0%, #6b96e6 50%, #b0c6df 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Layout & Containers
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-sm {
  max-width: 820px;
}

.container-fluid {
  max-width: 100%;
}

.section {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  margin-top: 0.75rem;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.15rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border: 1px solid rgba(87, 135, 223, 0.25);
  border-radius: var(--radius-full);
}

[data-theme="dark"] .section-tag {
  border-color: rgba(107, 150, 230, 0.3);
  color: #a3c2fa;
}

.grid {
  display: grid;
  gap: 1.75rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

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

@media (max-width: 1024px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }
}

/* Background Accents */
.bg-glow-wrapper {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1400px;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.bg-glow-1 {
  position: absolute;
  top: -100px;
  left: 20%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(87, 135, 223, 0.2) 0%, rgba(87, 135, 223, 0) 70%);
  filter: blur(60px);
  border-radius: 50%;
}

.bg-glow-2 {
  position: absolute;
  top: 150px;
  right: 15%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(92, 115, 140, 0.18) 0%, rgba(92, 115, 140, 0) 70%);
  filter: blur(60px);
  border-radius: 50%;
}

[data-theme="dark"] .bg-glow-1 {
  background: radial-gradient(circle, rgba(107, 150, 230, 0.22) 0%, rgba(107, 150, 230, 0) 70%);
}

[data-theme="dark"] .bg-glow-2 {
  background: radial-gradient(circle, rgba(139, 162, 189, 0.16) 0%, rgba(139, 162, 189, 0) 70%);
}