/**
 * Main CSS file for exaBase recruitment assistant
 * Contains CSS custom properties, base styles, and utility classes
 */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100;200;300;400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Prompt:wght@100;200;300;400;500;600;700;800;900&display=swap');

/* CSS Custom Properties (CSS Variables) */
:root {
  /* Colors */
  --color-primary: #1e40c8;
  --color-primary-gradient: linear-gradient(133deg, rgba(50,80,240,1) 0%, rgba(128,215,255,1) 100%);
  --color-text-primary: #1f242c;
  --color-text-white: #ffffff;
  --color-text-black: #000000;
  --color-text-gray: #9A9A9A;
  --color-text-gray-dark: #3A3A3A;
  --color-bg-white: #ffffff;
  --color-bg-gray: #f9fafb;
  --color-bg-gray-light: #EAEBEF;
  --color-bg-blue-light: #EBF1FF;
  --color-bg-blue-lighter: #F6F9FF;
  --color-border-gray: #c8c8c8;
  --color-border-gray-light: #e5e7eb;
  --color-blue-accent: #2563F4;
  --color-brand-blue: #1400C8;

  /* Typography */
  --font-family-primary: 'Noto Sans JP', sans-serif;
  --font-family-prompt: 'Prompt', sans-serif;
  --font-weight-light: 275;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;

  /* Breakpoints */
  --breakpoint-mobile: 392px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-large: 1200px;

  /* Button dimensions */
  --button-primary-width: 263px;
  --button-primary-height: 63px;
  --button-secondary-width: 263px;
  --button-secondary-height: 48px;
  --button-radius-primary: 8px;
  --button-radius-secondary: 7px;

  /* Layout */
  --max-width-container: 1200px;
  --navbar-height: 78px;
  --hero-height-desktop: 640px;
  --quote-height-mobile: 405px;
  --quote-height-desktop: 545px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-black);
  background-color: var(--color-bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: 0.5em;
}

p {
  margin-bottom: 1em;
}

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

a:hover {
  color: var(--color-primary);
  opacity: 0.8;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Buttons base styles */
button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Utility classes */
.container {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 1rem;
}

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

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

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

.font-bold {
  font-weight: var(--font-weight-bold);
}

.font-medium {
  font-weight: var(--font-weight-medium);
}

.font-normal {
  font-weight: var(--font-weight-normal);
}

.font-light {
  font-weight: var(--font-weight-light);
}

.font-black {
  font-weight: var(--font-weight-black);
}

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

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

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

.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-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

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

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

/* Spacing utilities */
.gap-2 {
  gap: 0.5rem;
}

.gap-3 {
  gap: 0.75rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-5 {
  gap: 1.25rem;
}

.gap-6 {
  gap: 1.5rem;
}

.gap-8 {
  gap: 2rem;
}

/* Margin utilities */
.mb-4 {
  margin-bottom: 1rem;
}

.mb-6 {
  margin-bottom: 1.5rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mb-10 {
  margin-bottom: 2.5rem;
}

.mb-16 {
  margin-bottom: 4rem;
}

.mt-4 {
  margin-top: 1rem;
}

.mt-8 {
  margin-top: 2rem;
}

.mt-10 {
  margin-top: 2.5rem;
}

.mt-16 {
  margin-top: 4rem;
}

/* Padding utilities */
.p-4 {
  padding: 1rem;
}

.p-6 {
  padding: 1.5rem;
}

.p-8 {
  padding: 2rem;
}

.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}

.px-6 {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.py-4 {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.py-8 {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

/* Width and height utilities */
.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.min-h-screen {
  min-height: 100vh;
}

/* Position utilities */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
}

/* Z-index utilities */
.z-10 {
  z-index: 10;
}

.z-20 {
  z-index: 20;
}

.z-50 {
  z-index: 50;
}

/* Border radius utilities */
.rounded {
  border-radius: 0.25rem;
}

.rounded-md {
  border-radius: 0.375rem;
}

.rounded-lg {
  border-radius: 0.5rem;
}

.rounded-xl {
  border-radius: 0.75rem;
}

/* Shadow utilities */
.shadow-sm {
  box-shadow: var(--shadow-sm);
}

.shadow-md {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

/* Background utilities */
.bg-white {
  background-color: var(--color-bg-white);
}

.bg-gray-50 {
  background-color: var(--color-bg-gray);
}

/* Border utilities */
.border {
  border: 1px solid var(--color-border-gray-light);
}

.border-gray-200 {
  border-color: var(--color-border-gray-light);
}

.border-gray-300 {
  border-color: var(--color-border-gray);
}

/* Visibility utilities */
.hidden {
  display: none;
}

.block {
  display: block;
}

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

/* Overflow utilities */
.overflow-hidden {
  overflow: hidden;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}