/**
 * CryptoStatus Frontend Styles
 * Light & Dark mode - matcher side designs
 */

/* ============================================
   CSS Variables - Light Mode (default)
   ============================================ */
:root {
    --crypto-bg: #ffffff;
    --crypto-surface: #f8f9fa;
    --crypto-surface-hover: #f1f3f5;
    --crypto-card-bg: #ffffff;
    --crypto-text: #1a1a2e;
    --crypto-text-secondary: #4a4a68;
    --crypto-subtext: #6c7086;
    --crypto-accent: #f5a623;
    --crypto-accent-hover: #e6991f;
    --crypto-positive: #22c55e;
    --crypto-positive-bg: rgba(34, 197, 94, 0.1);
    --crypto-negative: #ef4444;
    --crypto-negative-bg: rgba(239, 68, 68, 0.1);
    --crypto-border: rgba(0, 0, 0, 0.08);
    --crypto-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --crypto-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --crypto-radius: 12px;
    --crypto-radius-sm: 8px;
}

/* ============================================
   Dark Mode Variables
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --crypto-bg: #0f0f23;
        --crypto-surface: #1a1a2e;
        --crypto-surface-hover: #252542;
        --crypto-card-bg: #1a1a2e;
        --crypto-text: #ffffff;
        --crypto-text-secondary: #b8b8d1;
        --crypto-subtext: #8888a8;
        --crypto-accent: #22c55e;
        --crypto-accent-hover: #16a34a;
        --crypto-positive: #22c55e;
        --crypto-positive-bg: rgba(34, 197, 94, 0.15);
        --crypto-negative: #ef4444;
        --crypto-negative-bg: rgba(239, 68, 68, 0.15);
        --crypto-border: rgba(255, 255, 255, 0.08);
        --crypto-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        --crypto-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
    }
}

/* Dark mode class override */
.dark-mode .crypto-dashboard,
.dark-mode .crypto-prices-wrapper,
.dark-mode .crypto-chart-wrapper,
.dark-mode .crypto-ticker,
[data-theme="dark"] .crypto-dashboard,
[data-theme="dark"] .crypto-prices-wrapper,
[data-theme="dark"] .crypto-chart-wrapper,
[data-theme="dark"] .crypto-ticker,
.crypto-theme-dark,
.crypto-theme-dark .crypto-prices-wrapper,
.crypto-theme-dark .crypto-chart-wrapper {
    --crypto-bg: #0f0f23;
    --crypto-surface: #1a1a2e;
    --crypto-surface-hover: #252542;
    --crypto-card-bg: #1a1a2e;
    --crypto-text: #ffffff;
    --crypto-text-secondary: #b8b8d1;
    --crypto-subtext: #8888a8;
    --crypto-accent: #22c55e;
    --crypto-accent-hover: #16a34a;
    --crypto-border: rgba(255, 255, 255, 0.08);
    --crypto-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* Force light mode */
.crypto-theme-light,
.crypto-theme-light .crypto-prices-wrapper,
.crypto-theme-light .crypto-chart-wrapper {
    --crypto-bg: #ffffff;
    --crypto-surface: #f8f9fa;
    --crypto-surface-hover: #f1f3f5;
    --crypto-card-bg: #ffffff;
    --crypto-text: #1a1a2e;
    --crypto-text-secondary: #4a4a68;
    --crypto-subtext: #6c7086;
    --crypto-accent: #f5a623;
    --crypto-accent-hover: #e6991f;
    --crypto-border: rgba(0, 0, 0, 0.08);
    --crypto-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

/* ============================================
   Base Styles
   ============================================ */
.crypto-error {
    background: var(--crypto-negative-bg);
    color: var(--crypto-negative);
    padding: 16px 20px;
    border-radius: var(--crypto-radius-sm);
    text-align: center;
}

/* ============================================
   Price Cards Wrapper & Tabs
   ============================================ */
.crypto-prices-wrapper {
    margin-bottom: 24px;
}

.crypto-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.crypto-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--crypto-surface);
    border: 2px solid var(--crypto-border);
    border-radius: var(--crypto-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
}

.crypto-tab:hover {
    border-color: var(--crypto-accent);
    background: var(--crypto-surface-hover);
}

.crypto-tab.active {
    background: var(--crypto-accent);
    border-color: var(--crypto-accent);
    color: white;
}

.crypto-tab.active .tab-symbol {
    color: white;
}

.crypto-tab.active .tab-change {
    color: rgba(255, 255, 255, 0.85);
}

.tab-symbol {
    font-size: 1rem;
    color: var(--crypto-text);
}

.tab-change {
    font-size: 0.8rem;
    font-weight: 500;
}

.tab-change.positive {
    color: var(--crypto-positive);
}

.tab-change.negative {
    color: var(--crypto-negative);
}

/* ============================================
   Price Cards Grid
   ============================================ */
.crypto-prices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 8px 0;
}

.crypto-prices-grid.tabbed {
    display: block;
}

.crypto-prices-grid.tabbed .crypto-card {
    display: none;
}

.crypto-prices-grid.tabbed .crypto-card.active {
    display: block;
    animation: cardFadeIn 0.3s ease forwards;
}

.crypto-card {
    background: var(--crypto-card-bg);
    border: 1px solid var(--crypto-border);
    border-radius: var(--crypto-radius);
    padding: 24px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--crypto-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: cardFadeIn 0.5s ease forwards;
    opacity: 0;
}

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

/* Staggered animation */
.crypto-card:nth-child(1) { animation-delay: 0s; }
.crypto-card:nth-child(2) { animation-delay: 0.1s; }
.crypto-card:nth-child(3) { animation-delay: 0.15s; }
.crypto-card:nth-child(4) { animation-delay: 0.2s; }
.crypto-card:nth-child(5) { animation-delay: 0.25s; }
.crypto-card:nth-child(6) { animation-delay: 0.3s; }

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Card Header */
.crypto-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.crypto-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.crypto-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.crypto-card-updated {
    font-size: 0.75rem;
    color: var(--crypto-subtext);
    opacity: 0.7;
}

.crypto-symbol {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--crypto-accent);
    letter-spacing: 0.02em;
}

.crypto-name {
    font-size: 0.85rem;
    color: var(--crypto-subtext);
    text-transform: capitalize;
}

/* Change Badge */
.crypto-change {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.crypto-change.positive {
    background: var(--crypto-positive-bg);
    color: var(--crypto-positive);
}

.crypto-change.negative {
    background: var(--crypto-negative-bg);
    color: var(--crypto-negative);
}

.change-arrow {
    font-size: 0.85em;
}

/* Price Display */
.crypto-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--crypto-text);
    margin-bottom: 8px;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.crypto-price.price-updated {
    color: var(--crypto-accent);
}

/* Secondary Prices */
.crypto-secondary {
    font-size: 0.85rem;
    color: var(--crypto-subtext);
    display: flex;
    align-items: center;
    gap: 8px;
}

.crypto-secondary .separator {
    opacity: 0.4;
}

/* Sparkline */
.crypto-sparkline {
    height: 40px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--crypto-border);
}

/* ============================================
   Chart Container
   ============================================ */
.crypto-chart-wrapper {
    background: var(--crypto-card-bg);
    border: 1px solid var(--crypto-border);
    border-radius: var(--crypto-radius);
    overflow: hidden;
    margin: 16px 0;
    box-shadow: var(--crypto-shadow);
}

.crypto-chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--crypto-border);
    flex-wrap: wrap;
    gap: 12px;
}

.crypto-chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--crypto-text);
    margin: 0;
}

/* Currency Selector Dropdown */
.crypto-currency-selector {
    display: flex;
    align-items: center;
}

.crypto-currency-dropdown {
    appearance: none;
    -webkit-appearance: none;
    background: var(--crypto-surface);
    border: 1px solid var(--crypto-border);
    border-radius: var(--crypto-radius-sm);
    padding: 10px 40px 10px 16px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--crypto-text);
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c7086' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    transition: all 0.2s ease;
    min-width: 180px;
}

.crypto-currency-dropdown:hover {
    border-color: var(--crypto-accent);
}

.crypto-currency-dropdown:focus {
    outline: none;
    border-color: var(--crypto-accent);
    box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

.crypto-currency-dropdown option {
    background: var(--crypto-surface);
    color: var(--crypto-text);
    padding: 10px;
}

/* Period Buttons */
.crypto-chart-controls {
    display: flex;
    gap: 4px;
    background: var(--crypto-surface);
    padding: 4px;
    border-radius: var(--crypto-radius-sm);
}

.chart-period-btn {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 8px 14px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--crypto-subtext);
    cursor: pointer;
    transition: all 0.2s ease;
}

.chart-period-btn:hover {
    color: var(--crypto-text);
    background: var(--crypto-surface-hover);
}

.chart-period-btn.active {
    background: var(--crypto-accent);
    color: white;
}

/* Chart Canvas Container */
.crypto-chart-container {
    padding: 20px;
    position: relative;
    min-height: 300px;
}

/* Loading State */
.crypto-chart-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--crypto-subtext);
    font-size: 0.9rem;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--crypto-border);
    border-top-color: var(--crypto-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Chart Error */
.chart-error {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--crypto-negative);
}

.error-icon {
    font-size: 1.2rem;
}

/* Chart Stats */
.crypto-chart-stats {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--crypto-border);
    border-top: 1px solid var(--crypto-border);
}

.crypto-chart-stats:not(:empty) {
    display: grid;
}

.stat-item {
    background: var(--crypto-card-bg);
    padding: 14px 16px;
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.7rem;
    color: var(--crypto-subtext);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--crypto-text);
}

.stat-value.positive {
    color: var(--crypto-positive);
}

.stat-value.negative {
    color: var(--crypto-negative);
}

/* Chart Footer */
.crypto-chart-footer {
    display: flex;
    justify-content: flex-end;
    padding: 12px 16px;
    background: var(--crypto-surface);
    border-top: 1px solid var(--crypto-border);
    border-radius: 0 0 16px 16px;
}

.crypto-last-updated {
    font-size: 0.75rem;
    color: var(--crypto-subtext);
    display: flex;
    align-items: center;
    gap: 4px;
}

.crypto-last-updated .update-time {
    font-weight: 600;
    color: var(--crypto-text-secondary);
}

/* ============================================
   Dashboard
   ============================================ */
.crypto-dashboard {
    padding: 0;
}

.crypto-dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.crypto-dashboard-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--crypto-text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.title-icon {
    font-size: 1.3rem;
}

.crypto-last-updated {
    font-size: 0.85rem;
    color: var(--crypto-subtext);
    padding: 8px 16px;
    background: var(--crypto-surface);
    border: 1px solid var(--crypto-border);
    border-radius: 20px;
}

.update-time {
    color: var(--crypto-accent);
    font-weight: 600;
}

/* Dashboard Sections */
.crypto-prices-section {
    margin-bottom: 32px;
}

.crypto-charts-section {
    padding-top: 24px;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--crypto-text);
    margin: 0 0 20px 0;
}

.crypto-charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

/* ============================================
   Ticker
   ============================================ */
.crypto-ticker {
    background: var(--crypto-surface);
    border: 1px solid var(--crypto-border);
    border-radius: var(--crypto-radius-sm);
    overflow: hidden;
    white-space: nowrap;
    padding: 12px 0;
}

.ticker-track {
    display: flex;
    animation: tickerScroll 30s linear infinite;
}

.crypto-ticker.speed-slow .ticker-track {
    animation-duration: 60s;
}

.crypto-ticker.speed-fast .ticker-track {
    animation-duration: 15s;
}

@keyframes tickerScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 28px;
    border-right: 1px solid var(--crypto-border);
}

.ticker-symbol {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--crypto-accent);
}

.ticker-price {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--crypto-text);
}

.ticker-change {
    font-size: 0.8rem;
    font-weight: 600;
}

.ticker-change.positive {
    color: var(--crypto-positive);
}

.ticker-change.negative {
    color: var(--crypto-negative);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .crypto-prices-grid {
        grid-template-columns: 1fr;
    }
    
    .crypto-dashboard-title {
        font-size: 1.3rem;
    }
    
    .crypto-chart-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .crypto-chart-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .crypto-charts-grid {
        grid-template-columns: 1fr;
    }
    
    .crypto-price {
        font-size: 1.75rem;
    }
    
    .crypto-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .crypto-card {
        padding: 16px;
    }
    
    .chart-period-btn {
        padding: 6px 10px;
        font-size: 0.7rem;
    }
    
    .crypto-chart-container {
        padding: 16px;
    }
    
    .crypto-currency-dropdown {
        min-width: 150px;
        padding: 8px 32px 8px 12px;
        font-size: 0.85rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .crypto-chart-wrapper,
    .crypto-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .crypto-ticker {
        display: none;
    }
}