/* ========================================================================
   Variables
   ======================================================================== */
:root {
  /* Colors - nature-inspired palette */
  --color-background: #f5f7f4; /* subtle, fresh off-white with green hint */
  --color-surface: #ffffff;
  --color-text: #1f2933; /* deep slate */
  --color-text-muted: #6b7280;

  --color-primary: #1c7c54; /* lush garden green */
  --color-primary-soft: #e0f3eb;
  --color-primary-dark: #14553a;

  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #e11d48;

  --color-border-subtle: #e5e7eb;
  --color-border-strong: #9ca3af;

  /* Neutral grays */
  --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: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;

  --font-size-xs: 0.75rem;  /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem;   /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem;  /* 20px */
  --font-size-2xl: 1.5rem;  /* 24px */
  --font-size-3xl: 1.875rem;/* 30px */
  --font-size-4xl: 2.25rem; /* 36px */

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (px) */
  --space-0: 0;
  --space-1: 0.125rem; /* 2px */
  --space-2: 0.25rem;  /* 4px */
  --space-3: 0.375rem; /* 6px */
  --space-4: 0.5rem;   /* 8px */
  --space-5: 0.625rem; /* 10px */
  --space-6: 0.75rem;  /* 12px */
  --space-8: 1rem;     /* 16px */
  --space-10: 1.25rem; /* 20px */
  --space-12: 1.5rem;  /* 24px */
  --space-16: 2rem;    /* 32px */
  --space-20: 2.5rem;  /* 40px */
  --space-24: 3rem;    /* 48px */
  --space-32: 4rem;    /* 64px */
  --space-40: 5rem;    /* 80px */
  --space-48: 6rem;    /* 96px */

  /* Radius */
  --radius-sm: 0.25rem; /* 4px */
  --radius-md: 0.5rem;  /* 8px */
  --radius-lg: 0.75rem; /* 12px */
  --radius-xl: 1rem;    /* 16px */
  --radius-full: 9999px;

  /* Shadows - soft, natural */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 180ms ease-out;
  --transition-slow: 240ms ease-out;
}

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

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

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

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

button {
  border: none;
  padding: 0;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

body {
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Respect prefers-reduced-motion */
@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;
    scroll-behavior: auto !important;
  }
}

/* ========================================================================
   Base Styles
   ======================================================================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  background-color: var(--color-background);
  color: var(--color-text);
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin-bottom: var(--space-16);
}

h2 {
  font-size: clamp(1.75rem, 2.5vw, 2.125rem);
  margin-bottom: var(--space-12);
}

h3 {
  font-size: clamp(1.5rem, 2vw, 1.75rem);
  margin-bottom: var(--space-10);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-8);
}

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-6);
}

h6 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
}

p {
  margin-bottom: var(--space-8);
  /* comfortable reading width */
}

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

strong {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-primary-dark);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Lists */
ul,
ol {
  padding-left: 1.25rem;
  margin-bottom: var(--space-8);
}

li + li {
  margin-top: var(--space-2);
}

/* ========================================================================
   Accessibility Helpers
   ======================================================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.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;
}

/* ========================================================================
   Utilities
   ======================================================================== */
/* Layout: container for main widths */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

/* Flex helpers */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-row {
  flex-direction: row;
}

.flex-column {
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.gap-sm {
  gap: var(--space-6);
}

.gap-md {
  gap: var(--space-10);
}

.gap-lg {
  gap: var(--space-16);
}

/* Grid helpers */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-10);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-12);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Spacing utilities (example subset) */
.mt-0 { margin-top: 0 !important; }
.mt-sm { margin-top: var(--space-8) !important; }
.mt-md { margin-top: var(--space-16) !important; }
.mt-lg { margin-top: var(--space-24) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-sm { margin-bottom: var(--space-8) !important; }
.mb-md { margin-bottom: var(--space-16) !important; }
.mb-lg { margin-bottom: var(--space-24) !important; }

.py-sm {
  padding-top: var(--space-8) !important;
  padding-bottom: var(--space-8) !important;
}

.py-md {
  padding-top: var(--space-16) !important;
  padding-bottom: var(--space-16) !important;
}

.py-lg {
  padding-top: var(--space-24) !important;
  padding-bottom: var(--space-24) !important;
}

/* Text utilities */
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-muted { color: var(--color-text-muted) !important; }

/* Width helpers */
.w-full { width: 100% !important; }

/* ========================================================================
   Components
   ======================================================================== */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 0.625rem 1.25rem; /* 10px 20px */
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary-soft);
}

.btn-ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background-color: var(--gray-100);
}

.btn[disabled],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Form Elements */
.input,
select,
textarea {
  width: 100%;
  padding: 0.625rem 0.75rem; /* 10px 12px */
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: #ffffff;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background-color var(--transition-normal);
}

.input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

.input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-soft);
}

.input[disabled],
select[disabled],
textarea[disabled] {
  background-color: var(--gray-100);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

textarea {
  min-height: 6rem;
  resize: vertical;
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-12);
  border: 1px solid rgba(15, 23, 42, 0.03);
}

.card-header {
  margin-bottom: var(--space-8);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.card-footer {
  margin-top: var(--space-10);
}

/* Product image wrapper (for consistent aspect ratios) */
.product-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #d9f99d 0%, #bbf7d0 40%, #e0f3eb 100%);
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Badges (e.g., availability, promo) */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.badge-success {
  background-color: rgba(34, 197, 94, 0.12);
  color: #15803d;
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.12);
  color: #b45309;
}

.badge-danger {
  background-color: rgba(225, 29, 72, 0.12);
  color: #be123c;
}

/* Search bar wrapper (for prominent, trustworthy search area) */
.search-bar {
  display: flex;
  align-items: stretch;
  background-color: #ffffff;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  padding: 0.125rem 0.125rem 0.125rem 0.75rem;
  border: 1px solid var(--color-border-subtle);
  max-width: 640px;
}

.search-bar input[type="search"] {
  border: none;
  background: transparent;
  padding: 0.5rem 0.75rem 0.5rem 0;
  width: 100%;
  outline: none;
}

.search-bar .btn {
  border-radius: var(--radius-full);
}

/* Header helper (for consistent spacing) */
.site-header {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
}

/* Footer helper */
.site-footer {
  background-color: #0f172a;
  color: #e5e7eb;
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.site-footer a {
  color: #e5e7eb;
}

.site-footer a:hover {
  color: #bbf7d0;
}