/* ===================================================================
   GardenLite Base CSS
   Style: elegant, cozy, contemporary, sustainable, user-friendly
   Sections: Variables, Reset, Base, Utilities, Components, Accessibility
   =================================================================== */

/* ================================
   Variables
   ================================ */
:root {
  /* Color Palette */
  /* Neutrals */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Botanical Primary (Garden Green) */
  --primary-50:  #f3faf6;
  --primary-100: #e4f5ea;
  --primary-200: #c8ebd5;
  --primary-300: #9eddb7;
  --primary-400: #6ccf95;
  --primary-500: #3fbf75;
  --primary-600: #2ea65f;
  --primary-700: #23824a;
  --primary-800: #1c653b;
  --primary-900: #144a2c;

  /* Status Colors */
  --success-50:  #ecfdf5;
  --success-500: #10b981;
  --success-700: #047857;

  --warning-50:  #fffbeb;
  --warning-500: #f59e0b;
  --warning-700: #b45309;

  --danger-50:   #fef2f2;
  --danger-500:  #ef4444;
  --danger-700:  #b91c1c;

  /* Semantic tokens */
  --color-background: #f8faf8; /* soft, slightly warm light */
  --color-surface: #ffffff;     /* elevated surfaces (cards, modals) */
  --color-surface-alt: #f4f7f4; /* subtle alternate surface */
  --color-text: var(--gray-800);
  --color-heading: var(--gray-900);
  --color-muted: var(--gray-600);
  --color-primary: var(--primary-600);
  --color-link: var(--primary-700);
  --color-ring: rgba(46, 166, 95, 0.35); /* focus ring derived from primary */

  /* Typography */
  --font-sans: Inter, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  --font-serif: "Merriweather", Georgia, Cambria, "Times New Roman", Times, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Font sizes (scale) */
  --fs-100: 0.75rem;   /* 12px */
  --fs-200: 0.875rem;  /* 14px */
  --fs-300: 1rem;      /* 16px base */
  --fs-400: 1.125rem;  /* 18px */
  --fs-500: 1.25rem;   /* 20px */
  --fs-600: 1.5rem;    /* 24px */
  --fs-700: 1.875rem;  /* 30px */
  --fs-800: 2.25rem;   /* 36px */
  --fs-900: 3rem;      /* 48px */

  /* Line heights */
  --lh-tight: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.7;

  /* Spacing scale (0–96px, 4px step) */
  --space-0: 0px;
  --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;
  --space-13: 52px;
  --space-14: 56px;
  --space-15: 60px;
  --space-16: 64px;
  --space-17: 68px;
  --space-18: 72px;
  --space-19: 76px;
  --space-20: 80px;
  --space-21: 84px;
  --space-22: 88px;
  --space-23: 92px;
  --space-24: 96px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.12), 0 3px 6px rgba(0, 0, 0, 0.05);

  /* Transitions */
  --ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-fast: 150ms;
  --transition-medium: 250ms;
  --transition-slow: 400ms;

  /* Layout */
  --container-max: 1200px;
}

/* ================================
   Reset / Normalize
   ================================ */
*, *::before, *::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }

ul[role='list'], ol[role='list'] { list-style: none; margin: 0; padding: 0; }

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

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

button, [type='button'], [type='submit'], [type='reset'] { -webkit-appearance: button; }

/* Improve text rendering */
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }

/* Remove animations/transitions for users who prefer reduced motion (overridden later if needed) */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; background-attachment: initial !important; }
}

/* ================================
   Base styles
   ================================ */
body {
  font-family: var(--font-sans);
  font-size: var(--fs-300);
  line-height: var(--lh-relaxed);
  background-color: var(--color-background);
  color: var(--color-text);
}

main { display: block; }

/* Headings: elegant serif with fluid sizes */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-heading);
  line-height: var(--lh-tight);
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2rem, 2.5vw + 1rem, 3rem); margin-block: var(--space-6) var(--space-4); }
h2 { font-size: clamp(1.625rem, 1.5vw + 1rem, 2.25rem); margin-block: var(--space-6) var(--space-3); }
h3 { font-size: clamp(1.375rem, 1vw + 0.9rem, 1.875rem); margin-block: var(--space-5) var(--space-3); }
h4 { font-size: 1.25rem; margin-block: var(--space-4) var(--space-2); }
h5 { font-size: 1.125rem; margin-block: var(--space-3) var(--space-2); }
h6 { font-size: 1rem; margin-block: var(--space-3) var(--space-1); }

/* Paragraphs: comfortable measure */
p { max-width: 70ch; margin-block: 0 var(--space-4); }

small { font-size: var(--fs-200); color: var(--color-muted); }

/* Links: clean, contemporary */
a { color: var(--color-link); text-decoration: none; transition: color var(--transition-fast) var(--ease-standard); }
a:hover { color: var(--primary-800); text-decoration: underline; text-underline-offset: 2px; }
a:active { color: var(--primary-900); }

/* Selection */
::selection { background: var(--primary-100); color: var(--primary-900); }

/* Media elements */
figure { margin: 0; }
figcaption { font-size: var(--fs-200); color: var(--color-muted); margin-top: var(--space-2); }

/* Tables (minimal baseline) */
table { width: 100%; border-collapse: collapse; }
th, td { padding: var(--space-3); text-align: left; }

/* ================================
   Utilities
   ================================ */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--space-5); }
@media (min-width: 768px) { .container { padding-inline: var(--space-8); } }

/* Flex helpers */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-sm { gap: var(--space-3); }
.gap-md { gap: var(--space-5); }
.gap-lg { gap: var(--space-8); }

/* Grid helpers */
.grid { display: grid; gap: var(--space-5); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
.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: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* 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; }

/* Width helpers */
.w-full { width: 100%; }
.max-w-prose { max-width: 70ch; }

/* ================================
   Components
   ================================ */
/* Buttons */
.btn {
  --btn-bg: var(--color-primary);
  --btn-color: #fff;
  --btn-border: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: calc(var(--space-2) + 2px) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--btn-border);
  background-color: var(--btn-bg);
  color: var(--btn-color);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast) var(--ease-standard),
              color var(--transition-fast) var(--ease-standard),
              border-color var(--transition-fast) var(--ease-standard),
              transform var(--transition-fast) var(--ease-standard),
              box-shadow var(--transition-fast) var(--ease-standard);
}
.btn:hover { filter: brightness(0.96); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.6; cursor: not-allowed; }

/* Button variants */
.btn--primary { --btn-bg: var(--primary-600); --btn-border: var(--primary-600); --btn-color: #fff; }
.btn--outline { --btn-bg: transparent; --btn-color: var(--color-text); --btn-border: var(--gray-300); }
.btn--ghost { --btn-bg: transparent; --btn-color: var(--color-link); --btn-border: transparent; }
.btn--neutral { --btn-bg: var(--gray-800); --btn-border: var(--gray-800); --btn-color: #fff; }

/* Inputs */
.input, input[type="text"], input[type="email"], input[type="search"], input[type="tel"], input[type="url"], input[type="password"], input[type="number"], select, textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast) var(--ease-standard), box-shadow var(--transition-fast) var(--ease-standard), background-color var(--transition-fast) var(--ease-standard);
}
.input::placeholder, input::placeholder, textarea::placeholder { color: var(--gray-400); }
input:disabled, select:disabled, textarea:disabled { background-color: var(--gray-100); color: var(--gray-500); cursor: not-allowed; }

/* Checkbox/Radio accent */
input[type="checkbox"], input[type="radio"], progress, meter { accent-color: var(--color-primary); }

/* Cards */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}
.card--hoverable { transition: transform var(--transition-medium) var(--ease-standard), box-shadow var(--transition-medium) var(--ease-standard); }
.card--hoverable:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* Tag/Pill (useful for sustainability badges, etc.) */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  font-size: var(--fs-200);
  border-radius: var(--radius-full);
  background: var(--primary-50);
  color: var(--primary-800);
  border: 1px solid var(--primary-100);
}

/* Alerts (basic) */
.alert { padding: var(--space-4); border-radius: var(--radius-md); border: 1px solid transparent; }
.alert--success { background: var(--success-50); color: var(--success-700); border-color: rgba(16, 185, 129, 0.2); }
.alert--warning { background: var(--warning-50); color: var(--warning-700); border-color: rgba(245, 158, 11, 0.25); }
.alert--danger { background: var(--danger-50); color: var(--danger-700); border-color: rgba(239, 68, 68, 0.25); }

/* ================================
   Accessibility & Focus
   ================================ */
/* Unified focus-visible ring */
:focus { outline: none; }
:focus-visible { outline: 3px solid var(--color-ring); outline-offset: 2px; }

/* Specific interactive elements for robust focus */
a:focus-visible, button:focus-visible, [role="button"]:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible { box-shadow: 0 0 0 3px var(--color-ring); border-color: var(--primary-400); }

/* Reduced motion preference already handled above; re-enable smooth scrolling otherwise */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* ================================
   Theming helpers (optional, light touch)
   ================================ */
/* Subtle surface sections (e.g., category bands) */
.section-alt { background-color: var(--color-surface-alt); }

/* Footer baseline */
.footer-base { background: var(--gray-900); color: #e8ece8; }
.footer-base a { color: #e8ece8; }
.footer-base a:hover { color: #ffffff; text-decoration: underline; text-underline-offset: 2px; }