/*
Theme Name: Maruai Unity
Theme URI: https://maruaiuni.co.jp
Author: Maruai Unity Inc.
Author URI: https://maruaiuni.co.jp
Description: マルアイユニティー株式会社 コーポレートサイト用カスタムテーマ
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: maruaiuni
*/

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
  /* Colors — 水色ベース (Maruai logo color) */
  --color-primary: #55B7E6;
  --color-accent: #3498D4;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #FFFFFF;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F5F5;
  --color-border: #E0E0E0;
  --color-overlay: rgba(42, 143, 196, 0.75);

  /* Typography */
  --font-ja: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* Spacing */
  --section-padding: 80px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Header */
  --header-height: 80px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-ja);
  font-weight: var(--font-weight-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* Section */
.section {
  padding: var(--section-padding);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header__en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-header__title {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  line-height: 1.4;
}

.section-header__line {
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--color-accent);
  margin: 16px auto 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-ja);
  font-weight: var(--font-weight-bold);
  line-height: 1.4;
  color: var(--color-accent);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1em;
  line-height: 1.8;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-ja);
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1;
}

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

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

.btn--outline {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

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

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

.btn__arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   Page Hero
   ========================================================================== */

.page-hero {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  background-size: cover;
  background-position: center;
  margin-top: var(--header-height);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
}

.page-hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
}

.page-hero__en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
  opacity: 0.8;
}

.page-hero__title {
  font-size: 2.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-color: var(--color-bg-alt);
}

.card__body {
  padding: 24px;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.card__text {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
}

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

/* ==========================================================================
   Table
   ========================================================================== */

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.info-table th {
  width: 200px;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  background-color: var(--color-bg-alt);
  white-space: nowrap;
}

/* ==========================================================================
   Grid Layouts
   ========================================================================== */

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

/* ==========================================================================
   Utility
   ========================================================================== */

.text-center { text-align: center; }
.text-white { color: var(--color-white); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-24 { margin-bottom: 24px; }
.mb-48 { margin-bottom: 48px; }