/* ==========================================================================
   宝石のtodoリスト - マーケティングサイト スタイルシート
   ========================================================================== */

/* --------------------------------------------------------------------------
   フォント定義
   -------------------------------------------------------------------------- */
@font-face {
    font-family: 'Kaisei Decol';
    src: url('../fonts/KaiseiDecol-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* --------------------------------------------------------------------------
   CSS変数（カラーパレット）
   -------------------------------------------------------------------------- */
:root {
    /* 基本カラー */
    --color-primary: #e8b4c8;
    --color-primary-dark: #d699b3;
    --color-secondary: #b4c8e8;
    --color-accent: #c8b4e8;
    
    /* 宝石カラー */
    --gem-ruby: #e0115f;
    --gem-diamond: #b9f2ff;
    --gem-sapphire: #0f52ba;
    --gem-amethyst: #9966cc;
    --gem-emerald: #50c878;
    --gem-aquamarine: #7fffd4;
    --gem-morganite: #e8b4c8;
    --gem-pearl: #fdeef4;
    --gem-tanzanite: #4d4dff;
    --gem-topaz: #ffc87c;
    --gem-garnet: #733635;
    --gem-spinel: #ff1493;
    
    /* 背景・テキスト */
    --bg-primary: #faf8f9;
    --bg-secondary: #fff;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --text-primary: #2d2d2d;
    --text-secondary: #666;
    --text-light: #999;
    
    /* シャドウ */
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-glass: 0 8px 32px rgba(232, 180, 200, 0.2);
    
    /* ボーダー */
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --border-radius-full: 9999px;
    
    /* スペーシング */
    --section-padding: 80px 0;
    --container-max: 1200px;
}

/* --------------------------------------------------------------------------
   リセット・ベーススタイル
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Kaisei Decol', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* --------------------------------------------------------------------------
   共通コンポーネント
   -------------------------------------------------------------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   ヒーローセクション
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fdf2f6 0%, #f5f0fa 50%, #f0f5fa 100%);
    position: relative;
    overflow: hidden;
    padding: 40px 24px;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    max-width: var(--container-max);
    width: 100%;
    z-index: 1;
}

.hero-text {
    flex: 1;
    max-width: 500px;
}

.hero-title {
    font-size: 2.8rem;
    line-height: 1.3;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--gem-ruby) 0%, var(--gem-amethyst) 50%, var(--gem-sapphire) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.app-store-badge {
    display: block;
    width: fit-content;
    margin: 0 auto;
}

.app-store-badge img {
    height: 54px;
    transition: transform 0.3s ease;
}

.app-store-badge:hover img {
    transform: scale(1.05);
}

.app-store-badge.large img {
    height: 64px;
}

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

.phone-mockup {
    width: 280px;
    height: 580px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-medium);
}

.phone-mockup img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 32px;
    background: linear-gradient(180deg, #fdf2f6 0%, #f5f0fa 100%);
}

/* 浮遊する宝石アニメーション */
.hero-gems {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-gem {
    position: absolute;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0.3;
    border-radius: 50% 50% 50% 0;
    transform: rotate(45deg);
    animation: float 6s ease-in-out infinite;
}

.gem-1 {
    top: 15%;
    left: 10%;
    animation-delay: 0s;
}

.gem-2 {
    top: 60%;
    right: 15%;
    animation-delay: 2s;
    width: 40px;
    height: 40px;
}

.gem-3 {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
    width: 50px;
    height: 50px;
}

@keyframes float {
    0%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    50% {
        transform: rotate(45deg) translateY(-20px);
    }
}

/* --------------------------------------------------------------------------
   機能紹介セクション
   -------------------------------------------------------------------------- */
.features {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 48px;
}

.feature-item {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-glass);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glass);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gem-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gem-ruby), var(--gem-morganite));
    border-radius: 50% 50% 50% 0;
    transform: rotate(45deg);
    box-shadow: 0 4px 20px rgba(224, 17, 95, 0.3);
}

.task-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gem-sapphire), var(--gem-aquamarine));
    border-radius: 12px;
    position: relative;
}

.task-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 3px solid white;
    border-radius: 50%;
}

.task-icon::after {
    content: '';
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 10px;
    height: 18px;
    border-right: 3px solid white;
    border-bottom: 3px solid white;
}

.ui-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gem-amethyst), var(--gem-tanzanite));
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.ui-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, transparent 60%);
}

.feature-title {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* --------------------------------------------------------------------------
   宝石コレクションセクション
   -------------------------------------------------------------------------- */
.gems-collection {
    padding: var(--section-padding);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, #fdf2f6 100%);
}

.gems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.gem-card {
    text-align: center;
    padding: 20px 16px;
    background: var(--bg-glass);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s ease;
}

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

.gem-image {
    width: 60px;
    height: 60px;
    margin: 0 auto 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gem-morganite), var(--color-accent));
}

.gem-image[data-gem="ruby"] {
    background: linear-gradient(135deg, var(--gem-ruby), #ff6b8a);
}

.gem-image[data-gem="diamond"] {
    background: linear-gradient(135deg, var(--gem-diamond), #e0f7fa);
}

.gem-image[data-gem="sapphire"] {
    background: linear-gradient(135deg, var(--gem-sapphire), #5c7cfa);
}

.gem-image[data-gem="amethyst"] {
    background: linear-gradient(135deg, var(--gem-amethyst), #b794f4);
}

.gem-image[data-gem="emerald"] {
    background: linear-gradient(135deg, var(--gem-emerald), #69db7c);
}

.gem-image[data-gem="aquamarine"] {
    background: linear-gradient(135deg, var(--gem-aquamarine), #99e9f2);
}

.gem-image[data-gem="morganite"] {
    background: linear-gradient(135deg, var(--gem-morganite), #ffc9c9);
}

.gem-image[data-gem="pearl"] {
    background: linear-gradient(135deg, var(--gem-pearl), #fff5f5);
}

.gem-image[data-gem="tanzanite"] {
    background: linear-gradient(135deg, var(--gem-tanzanite), #7950f2);
}

.gem-image[data-gem="topaz"] {
    background: linear-gradient(135deg, var(--gem-topaz), #ffe066);
}

.gem-image[data-gem="garnet"] {
    background: linear-gradient(135deg, var(--gem-garnet), #a44);
}

.gem-image[data-gem="spinel"] {
    background: linear-gradient(135deg, var(--gem-spinel), #f06);
}

.gem-image[data-gem="more"] {
    background: linear-gradient(135deg, #ddd, #bbb);
    position: relative;
}

.gem-image[data-gem="more"]::after {
    content: '...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    color: #888;
}

.gem-name {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.more-gems .gem-name {
    color: var(--text-light);
}

/* --------------------------------------------------------------------------
   料金プランセクション
   -------------------------------------------------------------------------- */
.pricing {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.pricing-card {
    background: var(--bg-glass);
    border-radius: var(--border-radius-lg);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    position: relative;
    transition: transform 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
}

.pricing-card.featured {
    background: linear-gradient(135deg, #fdf2f6 0%, #f5f0fa 100%);
    border: 2px solid var(--color-primary);
    transform: scale(1.02);
}

.pricing-card.featured:hover {
    transform: scale(1.02) translateY(-4px);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--gem-ruby), var(--gem-morganite));
    color: white;
    padding: 4px 16px;
    border-radius: var(--border-radius-full);
    font-size: 0.8rem;
}

.plan-name {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.plan-price {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.price-placeholder {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--text-primary);
}

.plan-note {
    font-size: 0.85rem;
    color: var(--gem-emerald);
    margin-bottom: 16px;
}

.plan-features {
    margin: 24px 0;
    text-align: left;
}

.plan-features li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.plan-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--gem-emerald);
}

.plan-button {
    display: inline-block;
    padding: 12px 32px;
    border-radius: var(--border-radius-full);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: 1px solid #ddd;
}

.plan-button:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.plan-button.primary {
    background: linear-gradient(135deg, var(--gem-ruby), var(--gem-morganite));
    color: white;
    border: none;
}

.plan-button.primary:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* --------------------------------------------------------------------------
   スクリーンショットギャラリー
   -------------------------------------------------------------------------- */
.screenshots {
    padding: var(--section-padding);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, #f5f0fa 100%);
}

.screenshots-gallery {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 48px;
    overflow-x: auto;
    padding: 20px 0;
}

.screenshot-item {
    flex-shrink: 0;
    text-align: center;
}

.screenshot-item img {
    width: 200px;
    height: 420px;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: var(--shadow-medium);
    background: linear-gradient(180deg, #fdf2f6 0%, #f5f0fa 100%);
    transition: transform 0.3s ease;
}

.screenshot-item:hover img {
    transform: scale(1.02);
}

.screenshot-label {
    display: block;
    margin-top: 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* --------------------------------------------------------------------------
   CTAセクション
   -------------------------------------------------------------------------- */
.cta {
    padding: var(--section-padding);
    background: linear-gradient(135deg, #fdf2f6 0%, #f5f0fa 50%, #f0f5fa 100%);
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--gem-ruby) 0%, var(--gem-amethyst) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   フッター
   -------------------------------------------------------------------------- */
.footer {
    background: #2d2d2d;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.footer-app-name {
    font-size: 1.2rem;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-section h4 {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--color-primary);
}

.footer-section ul li:not(:has(a)) {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-bottom {
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   レスポンシブデザイン
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .phone-mockup {
        width: 240px;
        height: 500px;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-4px);
    }
    
    .screenshots-gallery {
        gap: 16px;
    }
    
    .screenshot-item img {
        width: 160px;
        height: 340px;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
    
    .gems-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .gem-card {
        padding: 16px 12px;
    }
    
    .gem-image {
        width: 50px;
        height: 50px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .phone-mockup {
        width: 200px;
        height: 420px;
    }
    
    .gems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .screenshot-item img {
        width: 140px;
        height: 300px;
    }
}