/* ========================================
   食卓天気予報 - Bento Grid × FinTech Style
   ======================================== */

:root {
    /* Colors */
    --bg-primary: #F5F7FA;
    --bg-card: #FFFFFF;
    --text-primary: #1A1A2E;
    --text-secondary: #6B7280;
    --text-white: #FFFFFF;

    /* Weather Gradients */
    --sunny-start: #00C853;
    --sunny-end: #B2FF59;
    --rainy-start: #78909C;
    --rainy-end: #B0BEC5;
    --storm-start: #FF3D00;
    --storm-end: #FF9100;
    --cloudy-start: #90A4AE;
    --cloudy-end: #CFD8DC;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Border Radius */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;

    /* Shadows */
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-bottom: 100px;
}

/* ========================================
   Header
   ======================================== */
.header {
    margin-bottom: var(--spacing-lg);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.city-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--text-primary);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
}

/* ========================================
   Hero Weather Card
   ======================================== */
.hero-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    color: var(--text-white);
    margin-bottom: var(--spacing-lg);
    transition: all 0.5s ease;
}

.bg-sunny {
    background: linear-gradient(135deg, var(--sunny-start) 0%, var(--sunny-end) 100%);
    box-shadow: 0 10px 20px -10px rgba(0, 200, 83, 0.4);
}

.bg-rainy {
    background: linear-gradient(135deg, var(--rainy-start) 0%, var(--rainy-end) 100%);
    box-shadow: 0 10px 20px -10px rgba(120, 144, 156, 0.4);
}

.bg-storm {
    background: linear-gradient(135deg, var(--storm-start) 0%, var(--storm-end) 100%);
    box-shadow: 0 10px 20px -10px rgba(255, 61, 0, 0.4);
}

.bg-cloudy {
    background: linear-gradient(135deg, var(--cloudy-start) 0%, var(--cloudy-end) 100%);
    box-shadow: 0 10px 20px -10px rgba(144, 164, 174, 0.4);
}

.hero-icon {
    font-size: 4rem;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.2);
}

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

.hero-message {
    font-size: 0.95rem;
    opacity: 0.95;
}

/* ========================================
   Section Titles
   ======================================== */
.section {
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-xs);
}

/* ========================================
   Tier 1: Large Cards (Full Width)
   ======================================== */
.tier1-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.card-tier1 {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.card-tier1:active {
    transform: scale(0.98);
}

.card-tier1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.card-tier1.weather-sunny::before { background: var(--sunny-start); }
.card-tier1.weather-rainy::before { background: var(--rainy-start); }
.card-tier1.weather-storm::before { background: var(--storm-start); }
.card-tier1.weather-cloudy::before { background: var(--cloudy-start); }

.card-emoji {
    font-size: 2.5rem;
}

.card-info {
    flex: 1;
}

.card-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.card-price {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

.weather-badge {
    font-size: 2rem;
    margin-bottom: 4px;
}

.weather-ratio {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    font-weight: 500;
}

.ratio-up { color: var(--storm-start); }
.ratio-down { color: var(--sunny-start); }
.ratio-stable { color: var(--text-secondary); }

/* ========================================
   Tier 2: Medium Cards (2 Columns)
   ======================================== */
.tier2-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.card-tier2 {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-card);
    transition: all 0.2s ease;
    cursor: pointer;
}

.card-tier2:active {
    transform: scale(0.97);
}

.card-tier2 .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.card-tier2 .card-emoji {
    font-size: 1.5rem;
}

.card-tier2 .weather-badge {
    font-size: 1.25rem;
}

.card-tier2 .card-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.card-tier2 .card-message {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ========================================
   Tier 3: Small Cards (Horizontal Scroll)
   ======================================== */
.tier3-scroll {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
    -webkit-overflow-scrolling: touch;
}

.tier3-scroll::-webkit-scrollbar {
    display: none;
}

.card-tier3 {
    flex-shrink: 0;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.card-tier3:active {
    transform: scale(0.97);
}

.card-tier3 .card-emoji {
    font-size: 1.25rem;
}

.card-tier3 .card-name {
    font-size: 0.85rem;
    font-weight: 500;
}

.card-tier3 .weather-badge {
    font-size: 1rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

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

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card-tier1, .card-tier2, .card-tier3 {
    animation: fadeIn 0.4s ease forwards;
}

.card-tier1:nth-child(1) { animation-delay: 0.1s; }
.card-tier1:nth-child(2) { animation-delay: 0.15s; }
.card-tier1:nth-child(3) { animation-delay: 0.2s; }

.card-tier2:nth-child(1) { animation-delay: 0.25s; }
.card-tier2:nth-child(2) { animation-delay: 0.3s; }
.card-tier2:nth-child(3) { animation-delay: 0.35s; }
.card-tier2:nth-child(4) { animation-delay: 0.4s; }

/* ========================================
   Affiliate Section
   ======================================== */
.affiliate-section {
    margin-top: var(--spacing-lg);
}

.affiliate-widget {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}