/* ========================================================================
 * Variables
 * ======================================================================== */

:root {
  /* Colors */
  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-text: #1f2933;
  --color-muted: #6b7280;
  --color-border: #dde2eb;

  --color-primary: #0ea5e9; /* Fresh, clean blue */
  --color-primary-soft: #e0f5fd;
  --color-primary-strong: #0284c7;

  --color-success: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #dc2626;

  --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", sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --font-mono: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --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-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

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

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);

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

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================================================
 * Reset / Normalize
 * ======================================================================== */

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

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

body {
  margin: 0;
}

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%;
}

img {
  height: auto;
}

button,
input,
select,
textarea {
  margin: 0;
  font: inherit;
  color: inherit;
}

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

textarea {
  resize: vertical;
}

:focus {
  outline: none;
}

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

/* Remove list styles on ul, ol elements with a list role */
ul[role="list"],
ol[role="list"] {
  list-style: none;
}

/* ========================================================================
 * Base Styles
 * ======================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

main {
  min-height: 60vh;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: var(--line-height-snug);
  color: var(--gray-900);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-muted);
}

strong {
  font-weight: 600;
}

a {
  color: var(--color-primary-strong);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

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

code,
pre {
  font-family: var(--font-mono);
}

hr {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: var(--space-6) 0;
}

/* ========================================================================
 * Utilities
 * ======================================================================== */

/* Layout containers */

.container {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.section--alt {
  background-color: #f0f4f9;
}

/* 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;
}

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

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

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

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

/* Grid helpers */

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Spacing utilities (commonly used) */

.mt-0 { margin-top: 0 !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-6 { margin-top: var(--space-6) !important; }
.mt-8 { margin-top: var(--space-8) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }

.text-center {
  text-align: center !important;
}

.text-right {
  text-align: right !important;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* 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;
}

/* ========================================================================
 * Components
 * ======================================================================== */

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: var(--font-size-sm);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #38bdf8);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-strong), #0ea5e9);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-primary-strong);
  border-color: var(--color-primary-soft);
  background-image: linear-gradient(to right, rgba(14, 165, 233, 0.08), rgba(34, 197, 94, 0.04));
}

.btn-outline:hover {
  border-color: var(--color-primary-strong);
  background-color: #e0f2fe;
}

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

.btn-ghost:hover {
  background-color: rgba(15, 23, 42, 0.04);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
  transform: none;
}

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

/* Inputs & form controls */

.input,
.select,
.textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  background-color: #ffffff;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.input::placeholder,
.textarea::placeholder {
  color: var(--gray-400);
}

.input:focus-visible,
.select:focus-visible,
.textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary-strong);
  box-shadow: 0 0 0 1px var(--color-primary-soft), 0 0 0 4px rgba(14, 165, 233, 0.18);
}

.input[aria-invalid="true"],
.textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
}

.label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
}

.field-help {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.field-error {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Card */

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.15);
}

.card--muted {
  background: linear-gradient(135deg, #f9fafb, #ecfeff);
}

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

/* Badges (useful for eco labels, express times, etc.) */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background-color: #e0f2fe;
  color: var(--color-primary-strong);
}

.badge-success {
  background-color: #dcfce7;
  color: #15803d;
}

.badge-soft {
  background-color: #eef2ff;
  color: #3730a3;
}

/* Hero-like section helpers (for main landing area) */

.hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.hero-title {
  font-size: clamp(2.25rem, 3vw + 1rem, 3rem);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  max-width: 34rem;
}

/* Testimonials / quote styling */

.quote {
  position: relative;
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-primary-soft);
  color: var(--gray-700);
  font-style: italic;
}

.quote-author {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-600);
}

/* Eco / highlight blocks */

.highlight-eco {
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  background: linear-gradient(135deg, #ecfdf3, #e0f7ff);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

/* Simple table styling (for pricing packages) */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th,
.table td {
  padding: 0.75rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.table th {
  font-weight: 600;
  color: var(--gray-700);
  background-color: #f9fafb;
}

.table--compact th,
.table--compact td {
  padding: 0.5rem 0.35rem;
}

/* Alerts (for hygiene notices, service messages) */

.alert {
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.alert-info {
  background-color: #e0f2fe;
  color: #0f172a;
}

.alert-success {
  background-color: #dcfce7;
  color: #14532d;
}

.alert-warning {
  background-color: #fef3c7;
  color: #92400e;
}

.alert-danger {
  background-color: #fee2e2;
  color: #991b1b;
}

/* Form layout (e.g., pickup scheduling form) */

.form-grid {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .form-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Footer helpers */

.footer {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

.footer a {
  color: var(--gray-500);
}

.footer a:hover {
  color: var(--color-primary-strong);
}

/* ========================================================================
 * End of base.css
 * ======================================================================== */