/* 
  Variable Definitions 
*/
:root {
  /* Colors */
  --color-primary: #003366;    /* Navy Blue - Trust, Logistics */
  --color-secondary: #C5A059;  /* Gold - Quality, Prosperity */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F9FA;     /* Light Gray for alternate sections */
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #FFFFFF;
  
  /* Fonts */
  --font-heading: 'Noto Serif JP', serif;
  --font-body: 'Noto Sans JP', sans-serif;
  
  /* Spacing */
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 32px;
  --spacing-xl: 64px;
  --section-padding: 80px 20px;
  
  /* Layout */
  --container-width: 1100px;
  --header-height: 70px;
}

/* 
  Reset & Base Styles 
*/
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

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

/* 
  Typography 
*/
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.4;
}

.section-title {
  font-size: 2.5rem;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  text-align: center;
  color: var(--color-secondary);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xl);
  text-transform: uppercase;
}

/* 
  Layout Utilities 
*/
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--section-padding);
}

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

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

/* 
  Header 
*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-heading);
}

/* Desktop Navigation - positioned in header area */
.nav {
  position: fixed;
  top: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding-right: calc((100% - var(--container-width)) / 2 + var(--spacing-md));
  z-index: 1000;
}

.nav-list {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-item a {
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.95rem;
}

.nav-item a:hover, .nav-item a.active {
  color: var(--color-secondary);
}

.btn-contact {
  background-color: var(--color-primary);
  color: var(--color-white) !important;
  padding: 8px 20px;
  border-radius: 4px;
}

.btn-contact:hover {
  background-color: #002244;
}

.hamburger {
  display: none; /* Show on mobile */
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-primary);
}

/* 
  Hero Section 
*/
.hero {
  height: 80vh; /* Viewport height */
  min-height: 500px;
  background: linear-gradient(rgba(0, 51, 102, 0.7), rgba(0, 51, 102, 0.5)), url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  padding-top: var(--header-height);
}

.hero-content {
  max-width: 800px;
  padding: 0 var(--spacing-md);
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-lg);
  font-weight: 400;
  opacity: 0.9;
}

.btn-hero {
  display: inline-block;
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: 12px 32px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.btn-hero:hover {
  background-color: #b08d45;
}

/* 
  Service Section (Index Page)
*/
.service {
  background-color: var(--color-bg);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid #eee;
  padding: var(--spacing-lg);
  border-radius: 8px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-primary);
  display: flex;
  justify-content: center;
  align-items: center;
}

.service-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.5;
}

.service-name {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.service-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 
  Company Section (Index Page)
*/
.company {
  background-color: var(--color-bg-alt);
}

.company-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.company-list {
  display: flex;
  flex-direction: column;
}

.company-row {
  display: flex;
  border-bottom: 1px solid #eee;
  padding: var(--spacing-md) 0;
}

.company-row:last-child {
  border-bottom: none;
}

.company-row dt {
  width: 30%;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.company-row dd {
  width: 70%;
  color: var(--color-text);
}

/* 
  Contact Section (Index Page)
*/
.contact {
  text-align: center;
}

.contact-text {
  margin-bottom: var(--spacing-lg);
  font-size: 1.1rem;
}

.btn-contact-large {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 15px 40px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-contact-large:hover {
  background-color: #002244;
}

/* 
  Footer 
*/
.footer {
  background-color: #1a1a1a;
  color: #aaaaaa;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  font-size: 0.9rem;
}

.footer-content {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  font-size: 1.2rem;
  color: var(--color-white);
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid #333;
  padding-top: var(--spacing-lg);
}

/* =========================================
   Sub-page Styles
   ========================================= */

/* Page Header */
.page-header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 120px 0 60px; /* Account for fixed header */
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: 5px;
}

.page-subtitle {
    font-size: 1rem;
    opacity: 0.8;
}

/* Breadcrumb */
.breadcrumb {
    background-color: #eee;
    padding: 10px 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Sub-page Section Headings */
.section-heading {
    font-size: 1.5rem;
    color: var(--color-primary);
    border-left: 5px solid var(--color-secondary);
    padding-left: 15px;
    margin-bottom: 30px;
}

/* Company Table */
.company-table-wrapper {
    overflow-x: auto;
}

.company-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.company-table th, .company-table td {
    padding: 20px;
    border-bottom: 1px solid #eee;
    text-align: left;
}

.company-table th {
    width: 30%;
    background-color: #f9f9f9;
    font-weight: 700;
    color: var(--color-primary);
}

/* Service Page Styles */

.intro-heading {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.intro-text {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto;
}

/* Service Detail Flex Layout */
.service-flex {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

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

.service-text {
    flex: 1;
}

.service-image {
    flex: 1;
}

.service-image img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    object-fit: cover;
    width: 100%;
    height: 350px; /* Uniform height */
}

.service-label {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.service-heading {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* Flow Steps */
.bg-primary-light {
    background-color: #e6eaf0; /* Very light blue/gray */
}

.flow-steps {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 200px;
    background: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    position: relative;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.step-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: rgba(0, 51, 102, 0.1); /* Faded Primary */
    line-height: 1;
    margin-bottom: -10px;
}

.step-title {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.step-desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.cta-heading {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

/* Contact Form Styles */

.contact-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border: 1px solid #eee;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    font-size: 0.95rem;
}

.required {
    background-color: #ff4444;
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 3px;
    margin-left: 8px;
    vertical-align: middle;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-body);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.1);
}

.form-privacy {
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
    text-align: center;
    color: var(--color-text-light);
}

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

.btn-submit {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: 15px 60px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-submit:hover {
    background-color: #002244;
    transform: translateY(-2px);
}

/* Recruit Status */
.recruit-status {
    padding: var(--spacing-xl) 0;
    font-size: 1.1rem;
}

/* Responsive adjustments moved to responsive.css */

/* Form Status Message */
.form-status {
    margin-bottom: var(--spacing-md);
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    display: none; /* Hidden by default */
}

.form-status.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-status.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}