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

:root {
    /* Colors */
    --bg-primary: #0a0e27;
    --bg-secondary: #151932;
    --bg-card: rgba(30, 35, 62, 0.6);
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    --accent-primary: #667eea;
    --accent-secondary: #764ba2;
    --success: #48bb78;
    --danger: #f56565;
    --border-color: rgba(255, 255, 255, 0.1);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0f1629 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
}

/* Header */
.header {
    background: rgba(15, 22, 41, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-wrapper {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.logo {
    height: 45px;
    width: auto;
    object-fit: contain;
    display: block;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.last-update {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.last-update span {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-sm) 0;
    height: calc(100vh - 70px - 90px);
    /* viewport height - header - footer */
    display: flex;
    align-items: center;
    overflow-y: auto;
}

/* Data Grid */
.data-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    width: 100%;
}

/* Data Cards */
.data-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.data-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.data-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.2);
}

.data-card:hover::before {
    opacity: 1;
}

/* Card Header */
.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}

.card-icon {
    font-size: 1.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-svg {
    width: 1.5rem;
    height: 1.5rem;
    display: block;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    flex: 1;
}

.card-code {
    font-size: 0.625rem;
    color: var(--text-muted);
    font-weight: 500;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
}

/* Card Body */
.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
}

.price-row.single {
    justify-content: center;
    padding: var(--spacing-sm) 0;
}

.price-row .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.price-row .value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    transition: all var(--transition-fast);
}

.price-row .value.primary {
    font-size: 1.125rem;
    color: var(--accent-primary);
}

.price-row .value.large {
    font-size: 1.375rem;
}

.price-row .value.change {
    font-weight: 700;
}

.price-row .value.change.positive {
    color: var(--success);
}

.price-row .value.change.negative {
    color: var(--danger);
}

/* Pulse Animations */
@keyframes pulseGreen {

    0%,
    100% {
        background-color: transparent;
        box-shadow: 0 0 0 0 rgba(72, 187, 120, 0);
    }

    50% {
        background-color: rgba(72, 187, 120, 0.1);
        box-shadow: 0 0 20px 5px rgba(72, 187, 120, 0.3);
    }
}

@keyframes pulseRed {

    0%,
    100% {
        background-color: transparent;
        box-shadow: 0 0 0 0 rgba(245, 101, 101, 0);
    }

    50% {
        background-color: rgba(245, 101, 101, 0.1);
        box-shadow: 0 0 20px 5px rgba(245, 101, 101, 0.3);
    }
}

.data-card.pulse-increase {
    animation: pulseGreen 1s ease-in-out;
}

.data-card.pulse-decrease {
    animation: pulseRed 1s ease-in-out;
}

/* Footer */
.footer {
    background: rgba(15, 22, 41, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Marquee */
.marquee {
    background: linear-gradient(90deg,
            rgba(245, 101, 101, 0.1) 0%,
            rgba(237, 137, 54, 0.1) 50%,
            rgba(245, 101, 101, 0.1) 100%);
    border-bottom: 1px solid rgba(245, 101, 101, 0.2);
    padding: var(--spacing-xs) 0;
    overflow: hidden;
    position: relative;
}

.marquee-content {
    display: flex;
    animation: marquee 60s linear infinite;
    white-space: nowrap;
}

.disclaimer-text {
    font-size: 0.75rem;
    color: #ffd700;
    font-weight: 500;
    padding-right: 100%;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.marquee-content:hover {
    animation-play-state: paused;
}

/* Footer Credit */
.footer-credit {
    padding: var(--spacing-xs) var(--spacing-sm);
    text-align: center;
}

.footer-credit p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
}

.footer-credit a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.footer-credit a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* Loading State */
.data-card.loading .value {
    background: linear-gradient(90deg,
            rgba(255, 255, 255, 0.1) 25%,
            rgba(255, 255, 255, 0.2) 50%,
            rgba(255, 255, 255, 0.1) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    color: transparent;
    border-radius: var(--radius-sm);
    min-width: 80px;
    display: inline-block;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .main-content {
        height: auto;
    }
}

@media (max-width: 768px) {
    .data-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .main-content {
        padding: var(--spacing-md) 0;
        height: auto;
    }

    .header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .header-left {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .logo {
        height: 40px;
    }

    .header-title {
        font-size: 1.25rem;
    }

    .card-title {
        font-size: 1.125rem;
    }

    .price-row .value.primary {
        font-size: 1.25rem;
    }

    .price-row .value.large {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .header-title {
        font-size: 1.125rem;
    }

    .disclaimer-text {
        font-size: 0.75rem;
    }
}

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

    .footer,
    .marquee {
        display: none;
    }

    .data-card {
        break-inside: avoid;
        border: 1px solid #ccc;
    }
}