/*
Theme Name: Thannect Theme
Theme URI: https://thannect.net/
Author: Thannect Team
Author URI: https://thannect.net/
Description: モダンでミニマルなデザインの企業サイトテーマ。白黒をベースにライトオレンジのアクセントカラーを使用。
Version: 1.0.0
License: GPL v2 or later
Text Domain: thannect
*/

/* ==========================================================================
   Variables & Reset
   ========================================================================== */
:root {
    /* Colors - ベージュ&ホワイトベース */
    --color-primary: #D4C4B0; /* メインベージュ */
    --color-primary-dark: #9B8B76; /* ダークベージュ */
    --color-primary-light: #EDE4D3; /* ライトベージュ */
    --color-accent: #E8B4B8; /* ローズベージュアクセント */
    --color-black: #4A4036; /* ダークブラウン（黒の代替） */
    --color-gray-dark: #6B5D54; /* 暖かいグレー */
    --color-gray: #8B7D72;
    --color-gray-medium: #ADA39A;
    --color-gray-light: #D1C9C3;
    --color-gray-lighter: #F5F0E8;
    --color-white: #FFFFFF;
    --color-bg: #FBF9F5; /* クリームホワイト */
    
    /* Typography - comme.fit inspired with 行書体 */
    --font-primary: 'Outfit', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Shippori Mincho', 'Noto Serif JP', 'YuMincho', 'Hiragino Mincho ProN', serif;
    --font-japanese: 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'YuGothic', Meiryo, sans-serif;
    --font-japanese-serif: 'Shippori Mincho', 'Noto Serif JP', 'Sawarabi Mincho', 'YuMincho', 'Hiragino Mincho ProN', serif;
    --font-body: 'Noto Sans JP', 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    --spacing-3xl: 8rem;
    
    /* Layout */
    --container-width: 1400px;
    --container-padding: 1rem;
    
    /* Transitions */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.16);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    color: var(--color-black);
    background-color: var(--color-white);
    line-height: 1.7;
    font-weight: 400;
    letter-spacing: 0.02em;
    font-feature-settings: "palt" 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    max-width: 100%;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    color: #1a1a1a;
}

h1 { 
    font-size: clamp(2rem, 5vw, 3.5rem); 
    font-weight: 700;
    letter-spacing: -0.03em;
}
h2 { 
    font-size: clamp(1.5rem, 4vw, 2.5rem); 
    font-weight: 600;
    letter-spacing: -0.02em;
}
h3 { 
    font-size: clamp(1.25rem, 3vw, 1.75rem); 
    font-weight: 600;
}
h4 { 
    font-size: clamp(1.125rem, 2.5vw, 1.5rem); 
    font-weight: 500;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-base);
}

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

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

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

/* 大画面対応 */
@media (min-width: 1600px) {
    .container {
        max-width: 1500px;
        padding: 0 2rem;
    }
}

@media (min-width: 1920px) {
    .container {
        max-width: 1600px;
    }
}

.section {
    padding: var(--spacing-3xl) 0;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-black);
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-black);
    transition: width var(--transition-base);
}

.main-nav a:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-black);
    margin: 5px 0;
    transition: all var(--transition-base);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding-top: calc(80px + var(--spacing-3xl));
    padding-bottom: var(--spacing-3xl);
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--color-gray-light) 0%, transparent 70%);
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

/* ==========================================================================
   Overview Cards
   ========================================================================== */
.overview-cards {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg);
}

.cards-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.cards-title {
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-sm);
}

.cards-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-black);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.overview-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-black);
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.overview-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-color: var(--color-gray-dark);
}

.overview-card:hover::before {
    transform: scaleX(1);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--color-gray-lighter);
    border: 1px solid var(--color-gray-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    color: var(--color-gray-dark);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.card-excerpt {
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-black);
    font-weight: 600;
    transition: all var(--transition-base);
    text-decoration: none;
}

.card-link:hover {
    gap: 1rem;
    color: var(--color-gray-dark);
    text-decoration: none;
}

.card-link::after {
    content: '→';
    transition: transform var(--transition-base);
}

.card-link:hover::after {
    transform: translateX(4px);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray-dark) 100%);
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    animation: shimmer 8s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(0); }
    100% { transform: translateX(100%); }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    background: var(--color-gray-dark);
    border-color: var(--color-gray-dark);
    color: var(--color-white);
    text-decoration: none;
}

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

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

.btn-outline-dark {
    color: var(--color-black);
    border-color: var(--color-black);
}

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

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-logo-img {
    height: 110px;
    width: auto;
    display: block;
    margin-top: -40px;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0) invert(1);
}

.footer-address {
    color: #ffffff;
    font-size: 10px;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.footer-address p {
    margin: 0;
    padding: 1px 0;
}

.footer-description {
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.footer-column h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--color-gray-light);
    transition: all var(--transition-base);
}

.footer-column a:hover {
    color: var(--color-white);
    padding-left: 0.5rem;
    text-decoration: none;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--color-gray-light);
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.observe-fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.observe-fade-up.observed {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
    .hero {
        min-height: 25vh !important;
        height: 25vh !important;
        max-height: 25vh !important;
    }

    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-white);
        box-shadow: -4px 0 12px rgba(0,0,0,0.1);
        transition: right var(--transition-base);
        z-index: 999;
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        padding: var(--spacing-2xl) var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .site-footer {
        padding: var(--spacing-2xl) 0 0.25rem;
    }

    .footer-bottom {
        padding-top: var(--spacing-sm);
        padding-bottom: 0.25rem;
    }

    .header-cta {
        display: none !important;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
}