/* ==========================================================================
   Base Styles & Variables
   ========================================================================== */

:root {
    /* ブランドカラー - 淡い黄緑 */
    --color-primary: #B8E6B8;
    --color-primary-dark: #8FC98F;
    --color-primary-light: #D4F1D4;
    
    /* アクセントカラー */
    --color-accent: #4A9B4A;
    --color-accent-dark: #367A36;
    
    /* ニュートラルカラー */
    --color-white: #FFFFFF;
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #EEEEEE;
    --color-gray-300: #E0E0E0;
    --color-gray-400: #BDBDBD;
    --color-gray-500: #9E9E9E;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    
    /* テキストカラー */
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    
    /* フォント */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* ボーダーラジウス */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* シャドウ */
    --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);
    
    /* トランジション */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-white);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.sp-only {
    display: none;
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
}

.logo i {
    font-size: 1.5rem;
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
/**    color: var(--color-text-primary); **/
    color: var(--color-white);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    padding: 140px 0 0px;
    overflow: hidden;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xxl);
/*  position: relative;
    z-index: 2; */
}

.hero-text {
    flex: 1;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-accent-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-white);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.badge i {
    color: var(--color-accent);
    font-size: 1.1rem;
}

.hero-cta {
    margin-top: var(--spacing-lg);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.pet-silhouettes {
    position: relative;
    width: 400px;
    height: 400px;
}

.silhouette {
    position: absolute;
    font-size: 12rem;
    opacity: 0.3;
    color: var(--color-accent);
}

.silhouette.dog {
    top: 20%;
    left: 10%;
    animation: float 3s ease-in-out infinite;
}

.silhouette.cat {
    bottom: 20%;
    right: 10%;
    animation: float 3s ease-in-out infinite 1.5s;
}

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

.hero-wave {
    position: relative; /* ← absolute をやめる */
/*  bottom: 0;
    left: 0; */
    width: 100%;
    margin-top: -50px; /* 好みで微調整：波を少し重ねたい場合 */
    z-index: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition-normal);
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-campaign {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    font-size: 1.1rem;
    padding: 1.25rem 2.5rem;
}

.btn-campaign:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-submit {
    background-color: var(--color-accent);
    color: var(--color-white);
    width: 100%;
    justify-content: center;
    font-size: 1.1rem;
    padding: 1.25rem;
}

.btn-submit:hover {
    background-color: var(--color-accent-dark);
}

/* ==========================================================================
   Section Common
   ========================================================================== */

section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    line-height: 1.4;
}

.section-subtitle {
    font-size: 1.1rem;
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ==========================================================================
   Problems Section
   ========================================================================== */

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

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.problem-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.problem-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.problem-icon i {
    font-size: 1.75rem;
    color: var(--color-accent);
}

.problem-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.problem-text {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    position: relative;
    background-color: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.feature-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.3;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.feature-icon i {
    font-size: 2.5rem;
    color: var(--color-white);
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.feature-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.feature-list i {
    color: var(--color-accent);
    font-size: 1rem;
}

/* ==========================================================================
   Results Section
   ========================================================================== */

.results {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

.results-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.results-testimonial {
    margin-top: var(--spacing-md);
}

.testimonial-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
}

.testimonial-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.testimonial-icon i {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

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

.author-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

/* ==========================================================================
   Cost Saving Section
   ========================================================================== */

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

.comparison {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.comparison-card {
    flex: 1;
    max-width: 400px;
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.comparison-card.new {
    border: 3px solid var(--color-accent);
    position: relative;
}

.comparison-card.new::before {
    content: 'おすすめ';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 0.25rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
}

.comparison-label {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.comparison-price {
    margin-bottom: var(--spacing-lg);
}

.price-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
}

.price-unit {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

.comparison-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: left;
}

.comparison-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.comparison-card.old .comparison-list i {
    color: #E53935;
}

.comparison-card.new .comparison-list i {
    color: var(--color-accent);
}

.comparison-arrow {
    font-size: 2rem;
    color: var(--color-accent);
}

.cost-note {
    background-color: var(--color-primary-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
}

.cost-note p {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--color-text-primary);
}

.cost-note i {
    color: var(--color-accent);
    font-size: 1.25rem;
}

/* ==========================================================================
   Campaign Section
   ========================================================================== */

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

.campaign-card {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    color: var(--color-white);
    padding: var(--spacing-xxl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.campaign-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.campaign-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.campaign-text {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.campaign-cta {
    margin-top: var(--spacing-lg);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

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

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.required {
    color: #E53935;
    font-size: 0.85rem;
    margin-left: 0.25rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-textarea {
    resize: vertical;
}

.form-submit {
    margin-top: var(--spacing-md);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--spacing-md);
}

.info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon i {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.info-content {
    flex: 1;
}

.info-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.info-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

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

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background-color: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.footer-logo i {
    font-size: 1.5rem;
}

.footer-text {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-gray-400);
}

/* ==========================================================================
   Page Top Button
   ========================================================================== */

.page-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.page-top.visible {
    opacity: 1;
    visibility: visible;
}

.page-top:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-4px);
}

.page-top i {
    font-size: 1.25rem;
}

/* ==========================================================================
   Responsive Styles - Tablet
   ========================================================================== */

@media screen and (max-width: 1024px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .pet-silhouettes {
        width: 300px;
        height: 300px;
    }
    
    .silhouette {
        font-size: 9rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Responsive Styles - Mobile
   ========================================================================== */

@media screen and (max-width: 768px) {
    .sp-only {
        display: inline;
    }
    
    /* Header */
    .header .container {
        height: 60px;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .nav {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
    
    /* Hero */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-badges {
        flex-direction: column;
    }
    
    .badge {
        width: 100%;
        justify-content: center;
    }
    
    .pet-silhouettes {
        width: 250px;
        height: 250px;
    }
    
    .silhouette {
        font-size: 7rem;
    }
    
    /* Sections */
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* Problems */
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .feature-number {
        font-size: 2rem;
        top: 15px;
        right: 15px;
    }
    
    /* Results */
    .results-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    /* Cost Saving */
    .comparison {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    /* Campaign */
    .campaign-card {
        padding: var(--spacing-lg);
    }
    
    .campaign-title {
        font-size: 1.5rem;
    }
    
    .campaign-text {
        font-size: 1rem;
    }
    
    /* Contact */
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    /* Buttons */
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .btn-campaign {
        font-size: 1rem;
        padding: 1rem 2rem;
    }
    
    /* Page Top */
    .page-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* ==========================================================================
   Responsive Styles - Small Mobile
   ========================================================================== */

@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.35rem;
    }
    
    .pet-silhouettes {
        width: 200px;
        height: 200px;
    }
    
    .silhouette {
        font-size: 5rem;
    }
}