/* ==========================================================================
   CSS VARIABLES
   ========================================================================== */

:root {
  /* Colors - My Time at Portia Theme */
  --color-bg: #faf7f2;
  --color-bg-secondary: #fff9f0;
  --color-text: #3a2f28;
  --color-text-secondary: #6b5d52;
  --color-primary: #8bb174;
  --color-primary-dark: #6d9157;
  --color-primary-light: #a8c797;
  --color-secondary: #87ceeb;
  --color-secondary-dark: #5fb3db;
  --color-accent: #f4a261;
  --color-accent-dark: #e8934a;
  --color-wood: #a67c52;
  --color-wood-dark: #8b6642;
  --color-success: #7cb668;
  --color-warning: #f4a261;
  --color-danger: #d87863;
  --color-neutral-100: #f8f5f0;
  --color-neutral-200: #e8e3da;
  --color-neutral-300: #d4cec2;
  --color-neutral-400: #b5aca0;
  --color-neutral-500: #8b8275;
  --color-neutral-600: #6b5d52;
  --color-neutral-700: #4a3f36;
  --color-neutral-800: #3a2f28;
  --color-neutral-900: #2a1f18;

  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(58, 47, 40, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(58, 47, 40, 0.1), 0 2px 4px -1px rgba(58, 47, 40, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(58, 47, 40, 0.1), 0 4px 6px -2px rgba(58, 47, 40, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(58, 47, 40, 0.1), 0 10px 10px -5px rgba(58, 47, 40, 0.04);
  --shadow-inner: inset 0 2px 4px 0 rgba(58, 47, 40, 0.06);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-4);
}

/* ==========================================================================
   RESET & NORMALIZE
   ========================================================================== */

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

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100vh;
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  cursor: pointer;
  background: none;
  border: none;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

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

ul,
ol {
  list-style: none;
}

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

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: 
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: var(--line-height-tight);
  font-weight: 700;
  color: var(--color-wood-dark);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-5);
}

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

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

@media (max-width: 768px) {
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  h3 {
    font-size: var(--font-size-xl);
  }
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

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

a {
  color: var(--color-primary-dark);
  transition: color var(--transition-fast);
  position: relative;
}

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

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

strong,
b {
  font-weight: 700;
  color: var(--color-neutral-800);
}

em,
i {
  font-style: italic;
}

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

hr {
  border: none;
  border-top: 2px solid var(--color-neutral-200);
  margin: var(--space-8) 0;
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

@media (min-width: 768px) {
  .container {
    --container-padding: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    --container-padding: var(--space-8);
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

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

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

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

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

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

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

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

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

.gap-8 {
  gap: var(--space-8);
}

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

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 1024px) {
  .grid-cols-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}

/* Spacing Utilities */
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.my-4 { margin-top: var(--space-4); margin-bottom: var(--space-4); }
.my-8 { margin-top: var(--space-8); margin-bottom: var(--space-8); }

.pt-4 { padding-top: var(--space-4); }
.pt-8 { padding-top: var(--space-8); }
.pb-4 { padding-bottom: var(--space-4); }
.pb-8 { padding-bottom: var(--space-8); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }

/* Text Utilities */
.text-center {
  text-align: center;
}

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

.text-left {
  text-align: left;
}

/* 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-width: 0;
}

/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-neutral-800);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white!important;
  border-color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

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

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

.btn-secondary {
  background-color: var(--color-secondary);
  color: white!important;
  border-color: var(--color-secondary-dark);
  box-shadow: var(--shadow-sm);
}

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

.btn-accent {
  background-color: var(--color-accent);
  color: white!important;
  border-color: var(--color-accent-dark);
  box-shadow: var(--shadow-sm);
}

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

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

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

/* Form Elements */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-neutral-800);
  font-size: var(--font-size-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: white;
  border: 2px solid var(--color-neutral-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 177, 116, 0.2);
}

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

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  background-color: var(--color-neutral-100);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Card */
.card {
  background-color: white;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 2px solid var(--color-neutral-200);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-neutral-200);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-wood-dark);
  margin: 0;
}

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

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-neutral-200);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge-secondary {
  background-color: var(--color-secondary);
  color: white;
}

.badge-accent {
  background-color: var(--color-accent);
  color: white;
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

/* Skip to main content link */
.skip-to-content {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-4) var(--space-6);
  background-color: var(--color-primary);
  color: white;
  font-weight: 700;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-to-content:focus {
  top: var(--space-4);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn,
  .card,
  .form-input,
  .form-textarea,
  .form-select {
    border-width: 3px;
  }
}