/* ================================================
   Financial Chart Viewer - Styles
   GitHub Pages Compatible
   ================================================ */

/* CSS Variables */
:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0b0;
    --text-muted: #6c6c7c;
    --accent-primary: #4f8cff;
    --accent-hover: #6ba3ff;
    --accent-glow: rgba(79, 140, 255, 0.3);
    --success: #22c55e;
    --danger: #ef4444;
    --border-color: #2a2a4a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    --max-width: 1400px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: var(--max-width);
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0rem;
}

/* Header */
.app-header {
    text-align: center;
    width: 100%;
    padding-bottom: 1rem;
    border-bottom: none;
}

.app-header h1 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* Chart Container */
.chart-container {
    width: 100%;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

/* Chart Display */
.chart-display {
    width: 100%;
    max-width: 100%;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow-x: auto;
    overflow-y: hidden;
    position: relative;
    min-height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: box-shadow var(--transition-normal);
}

.chart-display:hover {
    box-shadow: var(--shadow-lg);
}

/* Chart Image - ensure full SVG is visible */
.chart-image {
    max-width: none;
    width: auto;
    height: auto;
    max-height: 600px;
    display: block;
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.chart-display svg {
    max-width: none;
    width: auto;
    height: auto;
    display: block;
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.chart-display svg.fade-in {
    opacity: 1;
    transform: scale(1);
}

.chart-display svg.fade-out {
    opacity: 0;
    transform: scale(0.98);
}

/* Loading State */
.loading {
    color: var(--text-muted);
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.loading::before {
    content: '';
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Navigation */
.navigation {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

/* Navigation Buttons */
.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.nav-btn:hover:not(:disabled) {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 12px var(--accent-glow);
    transform: translateY(-1px);
}

.nav-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: none;
}

.nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.nav-icon {
    font-size: 1.1rem;
    line-height: 1;
}

/* Chart Info */
.chart-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    text-align: center;
}

/* Chart Details - Date, Weekday, and Change on same row */
.chart-details {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Chart Counter */
.chart-counter {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Chart Date */
.chart-date {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

/* Chart Weekday */
.chart-weekday {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Chart Change */
.chart-change {
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
}

.chart-change.positive {
    color: var(--success);
    background: rgba(34, 197, 94, 0.1);
}

.chart-change.negative {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.chart-change.neutral {
    color: var(--text-secondary);
    background: rgba(160, 160, 176, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: 1.5rem 1rem;
        gap: 1.5rem;
    }

    .app-header h1 {
        font-size: 1.5rem;
    }

    .chart-display {
        min-height: 300px;
        border-radius: var(--radius-md);
    }

    .navigation {
        padding: 1rem;
        gap: 0.75rem;
    }

    .nav-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    .nav-text {
        display: none;
    }

    .nav-btn {
        padding: 0.6rem 0.8rem;
    }

    .chart-date {
        font-size: 1rem;
    }

    .chart-counter {
        font-size: 0.8rem;
    }

    .chart-change {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: 1rem 0.75rem;
    }

    .app-header {
        padding-bottom: 1rem;
    }

    .app-header h1 {
        font-size: 1.25rem;
    }

    .chart-display {
        min-height: 250px;
    }

    .navigation {
        flex-wrap: wrap;
        justify-content: center;
    }

    .chart-info {
        order: -1;
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .nav-btn {
        flex: 1;
        justify-content: center;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus States */
.nav-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .app-container {
        max-width: 100%;
        padding: 0;
    }

    .navigation {
        display: none;
    }

    .chart-display {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Landing Page Styles */
.landing-page {
    min-height: 100vh;
    justify-content: center;
}

.landing-header {
    margin-bottom: 2rem;
}

.landing-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: 0.5rem;
}

.landing-buttons {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.landing-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem 3rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-normal);
    min-width: 200px;
}

.landing-btn:hover {
    background: var(--bg-card);
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-4px);
}

.landing-btn-icon {
    font-size: 3rem;
}

.landing-btn-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.landing-btn-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 180px;
}

/* Back Link */
.back-link {
    display: inline-block;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

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

/* Stat Header - inline layout */
.stat-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
}

/* Statistic Description */
.stat-description {
    text-align: center;
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 900px;
    margin: 1rem auto 0;
    padding: 0 1rem;
}

/* Stat image - full display */
.stat-image {
    max-width: 100%;
    width: auto;
    height: auto;
    max-height: none;
}

/* Day-stat image - slightly smaller */
.daystat-image {
    max-width: 100%;
    width: auto;
    height: auto;
    max-height: 550px;
}

.stat-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent-primary);
}

/* Responsive for landing page */
@media (max-width: 480px) {
    .landing-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .landing-btn {
        width: 100%;
        padding: 1.5rem;
    }
}