/* Minimalist Professional Dark Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
    --bg-body: #0a0a0a;
    --bg-card: #111111;
    --border-color: #333333;
    --border-hover: #555555;

    --text-primary: #ededed;
    --text-secondary: #888888;
    --text-tertiary: #555555;

    --input-bg: #161616;
    --btn-bg: #ededed;
    --btn-text: #000000;

    --success: #ededed;
    /* Monochrome success (white) */
    --error: #ff4444;
    /* Minimal red for critical errors only */

    --radius-sm: 6px;
    --radius-md: 12px;

    --container-max: 800px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: 4rem;
}

/* Layout */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 2rem 1.5rem;
    /* Reduced top padding */
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    /* Reduced gap between sections */
}

/* Header */
header {
    display: flex;
    flex-direction: row;
    /* Horizontal layout for compactness */
    align-items: center;
    justify-content: center;
    gap: 1rem;
    text-align: left;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    /* Reduced size */
    height: 40px;
}

.brand-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

h1 {
    font-size: 1.5rem;
    /* Reduced font size */
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-color);
    /* Creates grid lines */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.stat-item {
    background: var(--bg-body);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

/* Main Cards */
.main-section {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}

/* Inputs & Forms */
.input-container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1rem;
}

input[type="text"] {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0 1.25rem;
    height: 48px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--text-secondary);
    background: var(--bg-card);
}

input[type="text"]::placeholder {
    color: var(--text-tertiary);
}

.btn {
    height: 48px;
    padding: 0 1.5rem;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn:hover {
    background: #ffffff;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
    opacity: 0.9;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    width: 100%;
}

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: var(--text-secondary);
    color: #ffffff;
}

/* Miner Stats Panel */
.miner-stats-panel {
    display: none;
    margin-top: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    animation: fadeIn 0.3s ease;
}

.miner-stats-panel.visible {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.data-row {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.data-row:last-of-type {
    border-bottom: none;
}

.data-row span:first-child {
    color: var(--text-secondary);
}

/* Config Block */
.config-note {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.config-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    font-family: 'Menlo', 'Monaco', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-secondary);
    overflow-x: auto;
}

/* Feedback Messages */
.feedback-msg {
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-top: 1.5rem;
    display: none;
    text-align: center;
}

.feedback-msg.error {
    color: var(--error);
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.2);
}

.feedback-msg.success {
    color: var(--text-primary);
    background: var(--border-color);
    border: 1px solid var(--border-hover);
}

.feedback-msg a {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* Footer */
footer {
    margin-top: auto;
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 3rem;
}

.wallet-address {
    font-family: 'Menlo', monospace;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    word-break: break-all;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .container {
        padding: 2rem 1.25rem;
        gap: 3rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-item {
        padding: 1.25rem 1rem;
    }

    .input-container {
        grid-template-columns: 1fr;
    }
}