/* RechOne Theme & Design System */
/* ====================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* Root Variables - Centralized Theme Colors */
:root {
  /* ===== PRIMARY BRAND COLORS (TEAL/EMERALD) ===== */
  --color-primary-50: #ecfdf5;
  --color-primary-100: #d1fae5;
  --color-primary-200: #a7f3d0;
  --color-primary-300: #6ee7b7;
  --color-primary-400: #34d399;
  --color-primary-500: #10b981; /* MAIN BRAND */
  --color-primary-600: #059669;
  --color-primary-700: #047857;
  --color-primary-800: #065f46;
  --color-primary-900: #064e3b;
  --color-primary-950: #022c22;

  /* ===== SECONDARY COLORS (CYAN/BLUE) ===== */
  --color-secondary-50: #f0f9ff;
  --color-secondary-100: #e0f2fe;
  --color-secondary-500: #0ea5e9;
  --color-secondary-600: #0284c7;

  /* ===== SEMANTIC COLORS ===== */
  --color-success-50: #f0fdf4;
  --color-success-500: #22c55e;
  --color-success-600: #16a34a;

  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;

  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;

  /* ===== NEUTRAL SCALE ===== */
  --color-neutral-50: #fafafa;
  --color-neutral-100: #f4f4f5;
  --color-neutral-200: #e4e4e7;
  --color-neutral-300: #d4d4d8;
  --color-neutral-400: #a1a1aa;
  --color-neutral-500: #71717a;
  --color-neutral-600: #52525b;
  --color-neutral-700: #3f3f46;
  --color-neutral-800: #27272a;
  --color-neutral-900: #18181b;
  --color-neutral-950: #09090b;

  /* ===== BACKGROUND & SURFACE ===== */
  --color-bg-default: #fafafa;
  --color-bg-subtle: #f4f4f5;
  --color-bg-muted: #e4e4e7;

  --color-surface-default: #ffffff;
  --color-surface-border: #e4e4e7;

  /* ===== TEXT COLORS ===== */
  --color-text-primary: #09090b;
  --color-text-secondary: #3f3f46;
  --color-text-tertiary: #71717a;
  --color-text-muted: #a1a1aa;
  --color-text-inverse: #ffffff;

  /* ===== BORDER COLORS ===== */
  --color-border-default: #e4e4e7;
  --color-border-subtle: #f4f4f5;
  --color-border-focus: #10b981;

  /* ===== TYPOGRAPHY ===== */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'SFMono-Regular', Menlo, Monaco, Consolas, monospace;

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

  /* ===== RADIUS ===== */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* ===== SHADOWS ===== */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* ===== TRANSITIONS ===== */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* ===== UTILITY CLASSES ===== */
.glass {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ===== ANIMATIONS ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.float-animation {
  animation: float 6s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(16, 185, 129, 0.6);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* ===== CARD INTERACTIONS ===== */
.card-hover {
  transition: all var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.icon-container {
  transition: all var(--transition-base);
}

.card-hover:hover .icon-container {
  transform: rotate(5deg) scale(1.05);
  animation: pulse-glow 3s infinite;
}

/* ===== BUTTON STYLES ===== */
.btn-primary {
  background-color: var(--color-primary-600);
  color: var(--color-text-inverse);
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

/* ===== ACCESSIBILITY ===== */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-primary-600);
  color: var(--color-text-inverse);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  z-index: 100;
  transition: top var(--transition-base);
}

.skip-to-content:focus {
  top: var(--spacing-md);
}

/* ===== FOCUS STATES ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}