/* ==========================================================================
   PERSATUAN JAYA DIRI NEGERI JOHOR (PJD)
   Main Design Tokens & Core Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Tamil:wght@400;600;700&family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Brand Palette (Derived from official PJD Logo) */
  --color-navy-950: #070913;
  --color-navy-900: #0D1124;
  --color-navy-800: #141A35;
  --color-navy-700: #1D2447;
  
  --color-violet-950: #140B27;
  --color-violet-900: #1F103D;
  --color-violet-800: #2D1757;
  --color-violet-700: #3F217A;
  
  --color-purple-primary: #7C3AED;
  --color-purple-light: #A78BFA;
  --color-magenta-primary: #D946EF;
  --color-magenta-dark: #C026D3;
  --color-magenta-light: #F0ABFC;
  --color-pink-accent: #F43F5E;
  
  --color-cyan-primary: #06B6D4;
  --color-cyan-light: #38BDF8;
  --color-cyan-dark: #0284C7;

  /* Neutrals & Surfaces */
  --color-bg-dark: #090C1A;
  --color-bg-dark-surface: #12172F;
  --color-bg-dark-card: #181F3E;
  --color-bg-light: #F8F9FD;
  --color-bg-light-alt: #F2EEFB;
  --color-bg-white: #FFFFFF;
  
  --color-text-dark: #0F172A;
  --color-text-dark-muted: #475569;
  --color-text-dark-light: #64748B;
  
  --color-text-light: #F8FAFC;
  --color-text-light-muted: #CBD5E1;
  --color-text-light-dim: #94A3B8;

  --color-border-dark: rgba(255, 255, 255, 0.1);
  --color-border-dark-hover: rgba(255, 255, 255, 0.22);
  --color-border-light: rgba(15, 23, 42, 0.08);
  --color-border-light-hover: rgba(124, 58, 237, 0.3);

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #7C3AED 0%, #D946EF 50%, #06B6D4 100%);
  --gradient-magenta-purple: linear-gradient(135deg, #C026D3 0%, #7C3AED 100%);
  --gradient-cyan-blue: linear-gradient(135deg, #06B6D4 0%, #2563EB 100%);
  --gradient-dark-hero: linear-gradient(180deg, #090C1A 0%, #150E2A 50%, #090C1A 100%);
  --gradient-dark-overlay: linear-gradient(180deg, rgba(9, 12, 26, 0.85) 0%, rgba(20, 11, 39, 0.92) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 100%);
  
  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-tamil: 'Noto Sans Tamil', 'Plus Jakarta Sans', sans-serif;

  /* Sizing & Spacing */
  --container-max: 1240px;
  --container-wide: 1360px;
  --container-narrow: 920px;
  
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px -4px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 16px 40px -8px rgba(15, 23, 42, 0.14);
  --shadow-glow-purple: 0 0 40px rgba(124, 58, 237, 0.35);
  --shadow-glow-magenta: 0 0 35px rgba(217, 70, 239, 0.3);
  --shadow-glow-cyan: 0 0 35px rgba(6, 182, 212, 0.3);

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

body.dark-theme {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* Accessibility Focus Outline */
:focus-visible {
  outline: 2px solid var(--color-magenta-primary);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* Screen reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: inherit;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 5vw + 1rem, 3.85rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.85rem, 3.5vw + 0.5rem, 2.75rem);
  font-weight: 800;
}

h3 {
  font-size: clamp(1.35rem, 2vw + 0.5rem, 1.85rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1.25rem;
}

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

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-gradient-purple {
  background: var(--gradient-magenta-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-gradient-cyan {
  background: var(--gradient-cyan-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.font-tamil {
  font-family: var(--font-tamil);
  letter-spacing: 0;
}

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

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

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

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

.section {
  padding-top: clamp(4rem, 8vw, 7.5rem);
  padding-bottom: clamp(4rem, 8vw, 7.5rem);
  position: relative;
}

.section-sm {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

.section-dark-surface {
  background-color: var(--color-bg-dark-surface);
  color: var(--color-text-light);
}

.section-light {
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
}

.section-light-alt {
  background-color: var(--color-bg-light-alt);
  color: var(--color-text-dark);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

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

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

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ==========================================================================
   Motion & Animation System
   ========================================================================== */

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
  }
}