/* ============================================
   AUTONOMOUS MOWING SOLUTIONS - ROI CALCULATOR
   CSS Custom Properties & Base Styles
   ============================================ */

:root {
  /* ---- Brand Colors ---- */
  --color-black: #000000;
  --color-orange: #E37627;
  --color-orange-light: #FC832B;
  --color-orange-lighter: #FD964B;
  --color-white: #FFFFFF;
  --color-orange-bg: rgba(227, 118, 39, 0.04);
  --color-orange-glow: rgba(227, 118, 39, 0.15);

  /* ---- Gray Scale ---- */
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* ---- Semantic Colors ---- */
  --color-success: #059669;
  --color-success-light: #D1FAE5;
  --color-error: #DC2626;
  --color-error-light: #FEE2E2;

  /* ---- Typography ---- */
  --font-family: 'Montserrat', sans-serif;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* ---- Spacing Scale ---- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 36px;
  --space-10: 40px;
  --space-11: 44px;
  --space-12: 48px;

  /* ---- Border Radius ---- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;

  /* ---- 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 -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
               0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
               0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* ---- Transitions ---- */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;

  /* ---- Layout ---- */
  --max-width: 900px;
}


/* ============================================
   BASE RESET
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  font-size: 15px;
  color: var(--color-gray-800);
  background-color: var(--color-gray-100);
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior-y: none;
}

/* App shell - contained app feel */
.app-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-orange);
  text-decoration: none;
}

a:hover {
  color: var(--color-orange-light);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
}

ul, ol {
  list-style: none;
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: var(--font-family);
}

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

/* Utility: hidden */
.hidden,
[hidden] {
  display: none !important;
}

/* Main content wrapper */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  flex: 1;
  width: 100%;
}

/* Fieldset reset */
.form-fieldset {
  border: none;
  padding: 0;
  margin: 0;
}