/**
 * Kinki Loader Theme - Main Styles
 *
 * @package KinkiLoader
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    /* Colors */
    --color-primary: #3c94b9;
    --color-primary-dark: #2e5f80;
    --color-primary-darker: #1c5383;
    --color-secondary: #073c4b;
    --color-accent: #ff4e6c;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-white: #ffffff;
    --color-gray-light: #f3f5f5;
    --color-gray: #d9e1e4;
    --color-border: #e0e0e0;

    /* Gradients */
    --gradient-primary: linear-gradient(to right, #2e5f80, #3c7491);
    --gradient-bg: linear-gradient(to bottom, #ffffff 0%, #f3f5f5 100%);

    /* Typography */
    --font-primary: 'IBM Plex Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
    --font-heading: 'Oswald', sans-serif;

    /* Font Sizes */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-md: 18px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-2xl: 28px;
    --font-size-3xl: 32px;
    --font-size-4xl: 36px;
    --font-size-5xl: 48px;
    --font-size-6xl: 60px;
    --font-size-hero: 56px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 80px;
    --spacing-4xl: 120px;

    /* Layout */
    --container-max: 1200px;
    --container-wide: 1400px;
    --header-height: 80px;

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

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.06em;
}

.heading-en {
    font-family: var(--font-heading);
    font-weight: 400;
    letter-spacing: 0.03em;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title-en {
    font-family: var(--font-heading);
    font-size: var(--font-size-6xl);
    color: var(--color-primary);
    letter-spacing: 0.03em;
    margin-bottom: var(--spacing-xs);
}

.section-title-ja {
    font-size: var(--font-size-lg);
    font-weight: 600;
    letter-spacing: 0.12em;
}

.section-bg-text {
    font-family: var(--font-heading);
    font-size: 240px;
    color: var(--color-gray);
    opacity: 0.2;
    position: absolute;
    letter-spacing: 0.03em;
    z-index: 0;
    pointer-events: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-wide {
    max-width: var(--container-wide);
}

.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
}

.section-gray {
    background: var(--gradient-bg);
}

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

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

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.site-header.scrolled .nav-menu a {
    color: var(--color-text);
}

.site-header.scrolled .site-title {
    color: var(--color-primary);
}

.site-header.scrolled .nav-contact-btn {
    border-color: var(--color-primary);
    color: var(--color-primary) !important;
}

.site-header.scrolled .nav-contact-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-white) !important;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--spacing-xl);
}

.header-logo .logo-link {
    display: flex;
    align-items: center;
}

.header-logo .site-title {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-white);
    letter-spacing: 0.12em;
    transition: color var(--transition-base);
}

.header-logo img {
    max-height: 50px;
    width: auto;
}

/* Navigation */
.main-navigation {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.12em;
    transition: color var(--transition-fast);
}

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

.nav-contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 28px;
    background-color: transparent;
    color: var(--color-white) !important;
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.08em;
    border: 2px solid var(--color-white);
    border-radius: 50px;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.nav-contact-btn:hover {
    background-color: var(--color-white);
    color: var(--color-primary) !important;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    padding: 0;
    z-index: 1001;
}

.menu-toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-white);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-header.scrolled .menu-toggle-bar {
    background-color: var(--color-text);
}

.menu-toggle.active .menu-toggle-bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.menu-toggle.active .menu-toggle-bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .menu-toggle-bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-main {
    padding: var(--spacing-3xl) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.footer-company-name {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    letter-spacing: 0.12em;
    margin-bottom: var(--spacing-md);
}

.footer-address p {
    font-size: var(--font-size-base);
    letter-spacing: 0.06em;
    line-height: 2;
}

.footer-menu {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md) var(--spacing-xl);
    justify-content: flex-end;
}

.footer-menu a {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: 0.12em;
}

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

.footer-bottom {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
}

.copyright {
    text-align: right;
    font-size: var(--font-size-xs);
    letter-spacing: 0.06em;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: var(--font-size-md);
    font-weight: 600;
    letter-spacing: 0.12em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

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

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

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

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

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

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

.btn-lg {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-arrow {
    position: relative;
    padding-right: calc(var(--spacing-xl) + 20px);
}

.btn-arrow::after {
    content: '';
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: translateY(-50%) rotate(45deg);
}

/* View More Button */
.view-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    color: var(--color-white);
    letter-spacing: 0.03em;
    padding: var(--spacing-sm) var(--spacing-xl);
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
}

.view-more-btn:hover {
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--color-white);
}

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

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

.card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.card-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ==========================================================================
   Labels & Tags
   ========================================================================== */
.label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 12px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    border-radius: var(--radius-sm);
}

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

.label-outline {
    background-color: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.12em;
    color: var(--color-primary);
}

.form-label .required {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    margin-left: 4px;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow 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(60, 148, 185, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* Contact Form 7 Styles */
.wpcf7-form-control-wrap {
    display: block;
}

.wpcf7-not-valid-tip {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    margin-top: 4px;
}

.wpcf7-response-output {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   News List
   ========================================================================== */
.news-list {
    border-top: 1px solid var(--color-border);
}

.news-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-fast);
}

.news-item:hover {
    background-color: var(--color-gray-light);
}

.news-date {
    font-family: var(--font-heading);
    font-size: var(--font-size-md);
    color: var(--color-primary);
    letter-spacing: 0.03em;
    flex-shrink: 0;
}

.news-category {
    flex-shrink: 0;
}

.news-title {
    font-size: var(--font-size-md);
    font-weight: 400;
    flex-grow: 1;
}

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

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

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

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

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

.text-white {
    color: var(--color-white);
}

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

.mb-0 { margin-bottom: 0; }
.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); }

.mt-0 { margin-top: 0; }
.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); }

/* Scroll Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Page Specific - Common
   ========================================================================== */
.page-header {
    position: relative;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-secondary);
    background-size: cover;
    background-position: center;
    margin-top: var(--header-height);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
}

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

.page-title-en {
    font-family: var(--font-heading);
    font-size: var(--font-size-6xl);
    letter-spacing: 0.03em;
    margin-bottom: var(--spacing-xs);
}

.page-title-ja {
    font-size: var(--font-size-lg);
    letter-spacing: 0.12em;
}