/**
 * Style Guide CSS Variables
 * Based on the design system with sharp corners and modern aesthetic
 */

:root {
  /* Primary Colors */
  --color-primary: #0e5fce;
  --color-primary-bg: #ffffff;
  --color-primary-text: #4d4d4d;
  
  /* Secondary Colors */
  --color-secondary: #1a73e8;
  --color-secondary-bg: #f5f5f5;
  --color-secondary-text: #666666;
  
  /* Accent Colors */
  --color-accent: #0d47a1;
  --color-accent-light: #e3f2fd;
  
  /* Semantic Colors */
  --color-success: #2e7d32;
  --color-warning: #f57c00;
  --color-error: #c62828;
  --color-info: #0e5fce;
  
  /* Neutral Colors */
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e0e0e0;
  --color-gray-300: #bdbdbd;
  --color-gray-400: #9e9e9e;
  --color-gray-500: #757575;
  --color-gray-600: #616161;
  --color-gray-700: #424242;
  --color-gray-800: #303030;
  --color-gray-900: #212121;
  
  /* Border Colors */
  --color-border-light: #e0e0e0;
  --color-border-medium: #bdbdbd;
  --color-border-dark: #757575;
  
  /* State Colors */
  --color-hover-primary: #0d47a1;
  --color-active-primary: #0a3d91;
  --color-disabled: #bdbdbd;
  --color-disabled-text: #9e9e9e;
  
  /* Typography */
  --font-family: 'Raleway', "sans-serif";
  --font-size-h1: 2.5rem;
  --font-size-h2: 2rem;
  --font-size-h3: 1.75rem;
  --font-size-h4: 1.5rem;
  --font-size-h5: 1.25rem;
  --font-size-h6: 1rem;
  --font-size-body: 1rem;
  --font-size-small: 0.875rem;
  --font-size-xsmall: 0.75rem;
  
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Shadows */
  --shadow-small: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-xlarge: 0 8px 16px rgba(0, 0, 0, 0.2);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
  
  /* Border Radius (Sharp corners) */
  --border-radius: 0;
  
  /* Z-Index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: var(--line-height-normal);
  color: var(--color-primary-text);
  background-color: var(--color-primary-bg);
  margin: 0;
  padding: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-primary-text);
  margin: 0;
}

h1 {
  font-size: var(--font-size-h1);
  letter-spacing: var(--letter-spacing-wide);
}

h2 {
  font-size: var(--font-size-h2);
  letter-spacing: var(--letter-spacing-wide);
}

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

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

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

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

p {
  margin: 0 0 var(--spacing-md) 0;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-normal), 
              border-color var(--transition-normal),
              color var(--transition-normal);
}

.btn:disabled {
  background-color: var(--color-disabled);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-hover-primary);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-active-primary);
}

/* Secondary Button */
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: 10px 22px;
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-accent-light);
  border-color: var(--color-hover-primary);
}

.btn-secondary:active:not(:disabled) {
  background-color: #bbdefb;
}

.btn-secondary:disabled {
  border-color: var(--color-disabled);
  background-color: transparent;
}

/* Tertiary Button */
.btn-tertiary {
  background-color: transparent;
  color: var(--color-primary-text);
  border: none;
}

.btn-tertiary:hover:not(:disabled) {
  background-color: var(--color-secondary-bg);
  color: var(--color-primary);
}

/* Button Sizes */
.btn-small {
  padding: 8px 16px;
  font-size: var(--font-size-small);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.125rem;
}

/* Form Elements */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  color: var(--color-primary-text);
  background-color: var(--color-primary-bg);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-normal);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border: 2px solid var(--color-primary);
  padding: 11px 15px;
}

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

input:disabled,
textarea:disabled,
select:disabled {
  background-color: var(--color-secondary-bg);
  border-color: var(--color-border-light);
  cursor: not-allowed;
}

input.error,
textarea.error,
select.error {
  border: 2px solid var(--color-error);
  padding: 11px 15px;
}

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

label {
  display: block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-text);
  margin-bottom: var(--spacing-sm);
}

/* Checkbox */
input[type="checkbox"] {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-medium);
  border-radius: var(--border-radius);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  position: relative;
}

input[type="checkbox"]:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #ffffff;
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

input[type="checkbox"]:hover {
  border-color: var(--color-primary);
}

/* Radio Button */
input[type="radio"] {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-medium);
  border-radius: 50%;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  position: relative;
}

input[type="radio"]:checked {
  border-color: var(--color-primary);
}

input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

input[type="radio"]:hover {
  border-color: var(--color-primary);
}

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

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

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

a.secondary {
  color: var(--color-secondary-text);
}

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

a.muted {
  color: var(--color-gray-400);
}

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

/* Cards */
.card {
  background-color: var(--color-primary-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-medium);
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-large);
}

.card-header {
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-text);
  margin: 0;
}

/* Alerts */
.alert {
  padding: var(--spacing-md);
  border: 1px solid;
  border-left: 4px solid;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background-color: #e8f5e9;
  border-color: var(--color-success);
  color: #1b5e20;
}

.alert-warning {
  background-color: #fff3e0;
  border-color: var(--color-warning);
  color: #e65100;
}

.alert-error {
  background-color: #ffebee;
  border-color: var(--color-error);
  color: #b71c1c;
}

.alert-info {
  background-color: var(--color-accent-light);
  border-color: var(--color-info);
  color: var(--color-accent);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: var(--font-size-xsmall);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius);
  color: #ffffff;
}

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

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

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

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

.badge-neutral {
  background-color: var(--color-gray-500);
}

/* Dividers */
.divider {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: var(--spacing-md) 0;
}

/* Tables */
.table {
  width: 100%;
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  border-collapse: collapse;
}

.table thead {
  background-color: var(--color-secondary-bg);
}

.table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-text);
  border-bottom: 2px solid var(--color-border-light);
}

.table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-primary-text);
}

.table tbody tr:hover {
  background-color: var(--color-secondary-bg);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* Navigation */
.nav-link {
  display: inline-block;
  padding: 12px 16px;
  color: var(--color-primary-text);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: color var(--transition-normal);
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }