:root {
    --bg-color: #0d1117;
    --card-bg: rgba(22, 27, 34, 0.7);
    --border-color: rgba(48, 54, 61, 0.5);
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-emerald: #2ea043;
    --accent-amber: #d29922;
    --accent-indigo: #58a6ff;
    --glass-blur: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

/* Background Blobs */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: blobify 20s infinite alternate;
}

.blob-1 {
    background: var(--accent-emerald);
    top: -100px;
    left: -100px;
}

.blob-2 {
    background: var(--accent-indigo);
    bottom: -100px;
    right: -100px;
}

.blob-3 {
    background: var(--accent-amber);
    top: 20%;
    left: 60%;
    width: 300px;
    height: 300px;
}

@keyframes blobify {
    from {
        transform: translate(0, 0) scale(1);
    }

    to {
        transform: translate(100px, 50px) scale(1.2);
    }
}

/* Layout */
.container {
    width: 90%;
    max-width: 1000px;
    padding: 2rem;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.accent-text {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-emerald));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Dashboard Grid */
.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

/* Glassmorphism Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(240, 246, 252, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.icon {
    font-size: 1.5rem;
}

.card-header h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.rate-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

.symbol {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-right: 0.25rem;
}

.unit {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.card-footer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Card Specifics */
.card-official {
    border-top: 4px solid var(--accent-emerald);
}

.card-parallel {
    border-top: 4px solid var(--accent-amber);
}

.card-gap {
    border-top: 4px solid var(--accent-indigo);
}

.card-official #price-official {
    color: var(--accent-emerald);
}

.card-parallel #price-parallel {
    color: var(--accent-amber);
}

.card-gap #gap-value {
    color: var(--accent-indigo);
}

/* Calculator Section */
.calculator-section {
    margin-top: 0;
}

.card-p2p {
    border-top: 4px solid var(--accent-indigo);
    background: linear-gradient(to bottom, var(--card-bg), rgba(88, 166, 255, 0.05));
}

.calculator-body {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.input-group input {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.8rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-indigo);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

/* Remove spin buttons from number inputs */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.result-area {
    background: rgba(240, 246, 252, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1rem;
    text-align: center;
}

.result-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.rate-value.highlight {
    color: var(--accent-indigo);
    margin: 0;
    font-size: 2.2rem;
}

/* Status Footer */
.info-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-emerald);
}

.refresh-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.refresh-btn:hover {
    background: rgba(240, 246, 252, 0.05);
    border-color: var(--text-secondary);
}

.refresh-btn svg {
    width: 16px;
    height: 16px;
}

.refresh-btn.loading svg {
    animation: spin 1s linear infinite;
}

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

/* skeleton loading animation */
.loading-pulse {
    position: relative;
    overflow: hidden;
}

.loading-pulse::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: translateX(-100%);
    }

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

@media (max-width: 640px) {
    body {
        padding: 0;
        align-items: flex-start;
        height: 100dvh;
        overflow-y: auto;
    }

    .container {
        padding: 2.5rem 24px;
        width: 100%;
        max-width: 100%;
        min-height: 100dvh;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        gap: 0.5rem;
    }

    .header {
        margin-bottom: 0.8rem;
    }

    .header h1 {
        font-size: 3.0rem;
        font-weight: 800;
        margin-bottom: 0.1rem;
        color: var(--text-primary);
        letter-spacing: -2px;
    }

    .accent-text {
        background: none;
        -webkit-background-clip: unset;
        background-clip: unset;
        -webkit-text-fill-color: unset;
        color: inherit;
    }

    .subtitle {
        font-size: 0.85rem;
        color: var(--text-secondary);
        font-weight: 500;
    }

    .dashboard {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
        margin-bottom: 0.5rem;
    }

    .card {
        padding: 0.8rem 0.5rem;
        gap: 0.8rem;
        border-radius: 20px;
        align-items: center;
        text-align: center;
    }

    .card-header {
        flex-direction: column;
        gap: 0.4rem;
    }

    .card-header .icon {
        font-size: 1.4rem;
    }

    .card-header h3 {
        font-size: 0.6rem;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        font-weight: 700;
        color: #fff;
    }

    .rate-value {
        font-size: 2rem;
        margin: 0.2rem 0;
    }

    .symbol,
    .unit {
        font-size: 0.9rem;
    }

    .card-footer p {
        font-size: 0.7rem;
        text-transform: uppercase;
        letter-spacing: 0.3px;
        font-weight: 500;
        color: var(--text-secondary);
    }

    .card-gap {
        grid-column: span 2;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 1.2rem 1.8rem;
    }

    .card-gap .card-header {
        flex-direction: row;
        gap: 0.8rem;
    }

    .card-gap .rate-value {
        font-size: 2.2rem;
        margin: 0;
        white-space: nowrap;
    }

    .calculator-section {
        margin-bottom: 0.5rem;
    }

    .card-p2p {
        padding: 2rem 1.5rem;
        gap: 1.5rem;
    }

    .card-p2p .card-header h3 {
        font-size: 0.8rem;
    }

    /* .calculator-body {
        gap: 2rem;
    } */

    .input-row {
        gap: 1rem;
    }

    .input-group label {
        font-size: 0.7rem;
        font-weight: 600;
        text-transform: uppercase;
        color: var(--text-secondary);
        /* margin-bottom: 0.8rem; */
        text-align: center;
    }

    .input-group input {
        padding: 1rem 0.5rem;
        font-size: 2rem;
        font-weight: 800;
        background: #0d1117;
        color: var(--text-primary);
        /* Ensure white text */
        border: 2px solid var(--border-color);
        border-radius: 16px;
        text-align: center;
        width: 100%;
        -webkit-appearance: none;
        /* Fix iPhone default styles */
        appearance: none;
    }

    .result-area {
        padding: 1.5rem;
        background: transparent;
        border: 1px solid var(--border-color);
        border-radius: 20px;
    }

    .result-label {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--text-secondary);
        margin-bottom: 0.8rem;
    }

    .rate-value.highlight {
        font-size: 3.5rem;
        color: var(--accent-indigo);
    }

    .rate-value.highlight .symbol {
        font-size: 1.4rem;
    }

    .info-footer {
        padding: 1.5rem 0;
        margin-top: auto;
    }
}