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

/* --- CUSTOM VARIABLES --- */
:root {
  /* Green Theme Editorial Accents */
  --color-yellow-hero: #e2f5ec;   /* Soft mint background */
  --color-border-dark: #0f172a;   /* Thin dark outline slate */
  
  /* Color Tokens - GSA Green & Slate */
  --color-primary: #007a53;       /* Kelly Green */
  --color-primary-hover: #006041;
  --color-primary-glow: #f0faf4;  /* Mint-50 glow */
  --color-secondary: #0f172a;     /* Deep Slate/Charcoal */
  --color-secondary-hover: #1e293b;
  --color-accent: #10b981;        /* Spring/Lime Green */
  --color-accent-glow: rgba(16, 185, 129, 0.05);

  /* Light Theme Palette - White & Soft Mint */
  --bg-base: #ffffff;             /* Pure White Page Base */
  --bg-surface: #f8fafc;          /* Off-white Slate-50 for panels */
  --bg-surface-solid: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0faf4;       /* Soft mint card hover */
  --border-color: #cbd5e1;        /* Slate-300 */
  --border-color-hover: #94a3b8;  /* Slate-400 */
  --border-color-focus: #007a53;  /* Kelly Green */

  /* Text Tiers */
  --color-text-main: #0f172a;     /* Slate-900 */
  --color-text-muted: #334155;    /* Slate-700 */
  --color-text-dim: #64748b;      /* Slate-500 */

  /* Grade Indicator System */
  --color-grade-a: #007a53;  /* GSA Green */
  --color-grade-b: #0ea5e9;  /* Sky-500 */
  --color-grade-c: #d97706;  /* Amber-600 */
  --color-grade-f: #dc2626;  /* Red-600 */

  --bg-grade-a-glow: #f0faf4; /* Mint glow */
  --bg-grade-b-glow: #f0f9ff;
  --bg-grade-c-glow: #fffbeb;
  --bg-grade-f-glow: #fef2f2;

  /* Typography Scale */
  --font-display: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Effects - Subtle, layered enterprise shadows */
  --backdrop-blur: blur(16px);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px -2px rgba(0, 74, 50, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 30px -5px rgba(0, 74, 50, 0.08), 0 8px 12px -6px rgba(0, 74, 50, 0.04);
  --shadow-glow: 0 0 12px rgba(0, 122, 83, 0.04);
  --shadow-accent-glow: 0 0 12px rgba(16, 185, 129, 0.04);

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transition timings */
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --time-fast: 0.15s;
  --time-normal: 0.25s;
}

/* --- RESET & GLOBAL BUILD --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-base);
  color: var(--color-text-main);
  font-family: var(--font-body);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-color: var(--bg-base);
  background-image: radial-gradient(rgba(0, 122, 83, 0.08) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
}

/* Base scrollbar customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: rgba(15, 23, 42, 0.1);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(79, 70, 229, 0.3);
}

/* Typography elements */
.font-serif-italic {
  font-family: 'Playfair Display', Georgia, serif;
  font-style: italic;
  font-weight: 700;
}

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

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

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

/* --- PREMIUM UTILITIES --- */
.text-gradient {
  background: linear-gradient(135deg, var(--color-text-main) 30%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-olympic {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.glass-panel {
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md);
  transition: border-color var(--time-normal) var(--ease-smooth), box-shadow var(--time-normal) var(--ease-smooth);
}

.glass-panel-hover:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  background: var(--color-secondary);
  color: #ffffff;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--time-fast) var(--ease-smooth), border-color var(--time-fast) var(--ease-smooth);
  border: 1px solid var(--color-secondary);
}

.btn-primary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--color-text-main);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--time-fast) var(--ease-smooth), border-color var(--time-fast) var(--ease-smooth), box-shadow var(--time-fast) var(--ease-smooth);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color-hover);
}

/* Custom background glowing particles */
.bg-glow-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bg-glow-orb-1 {
  position: absolute;
  top: -10%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(79, 70, 229, 0.02) 0%, rgba(255, 255, 255, 0) 70%);
  filter: blur(80px);
}

.bg-glow-orb-2 {
  position: absolute;
  bottom: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(37, 99, 235, 0.015) 0%, rgba(255, 255, 255, 0) 70%);
  filter: blur(80px);
}

/* Modal Dialog standard designs */
dialog {
  margin: auto;
  border: none;
  background: transparent;
  color: var(--color-text-main);
  outline: none;
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.30);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}