:root {
    --app-bg: #09090b;
    --card-bg: rgba(24, 24, 27, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-main: #fafafa;
    --text-muted: #a1a1aa;

    --primary: #f97316;
    /* Orange 500 */
    --primary-glow: rgba(249, 115, 22, 0.3);
    --success: #10b981;
    /* Emerald 500 */
    --warn: #ef4444;
    /* Red 500 */

    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--app-bg);
    color: var(--text-main);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(249, 115, 22, 0.05), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(249, 115, 22, 0.03), transparent 25%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.app-container {
    width: 100%;
    max-width: 1400px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    height: 100vh;
}

/* Utilities */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.space-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.p-4 {
    padding: 1.5rem;
}

.rounded {
    border-radius: 12px;
}

.text-success {
    color: var(--success);
}

.text-warn {
    color: var(--warn);
}

.highlight {
    color: var(--primary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--card-border);
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Main Grid */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    flex-grow: 1;
    min-height: 0;
}

@media (max-width: 900px) {
    .main-grid {
        grid-template-columns: 1fr;
        overflow-y: auto;
    }

    .app-container {
        height: auto;
        display: block;
    }
}

/* Panels */
.panel {
    display: flex;
    flex-direction: column;
}

.input-panel {
    padding: 1.5rem;
}

.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.btn {
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all 0.2s;
    border-radius: 6px;
}

.text-btn {
    background: transparent;
    color: var(--primary);
    font-weight: 500;
}

.text-btn:hover {
    background: rgba(249, 115, 22, 0.1);
}

.btn.sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
}

.code-editor {
    flex-grow: 1;
    margin-top: 1rem;
    background: #000;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1rem;
    color: #e2e8f0;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    resize: none;
    outline: none;
    transition: border-color 0.2s;
    min-height: 250px;
}

.code-editor:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

/* Range Sliders */
.input-controls {
    flex-shrink: 0;
}

.control-label {
    display: flex;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    margin-bottom: 0.5rem;
    cursor: pointer;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    transition: transform 0.1s;
    box-shadow: 0 0 10px var(--primary-glow);
}

input[type=range]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Analytics Panel */
.analytics-panel {
    gap: 1rem;
}

.metric-card {
    padding: 1.5rem;
    border-radius: 12px;
}

.hero-metric {
    text-align: center;
    border-color: rgba(249, 115, 22, 0.2);
    box-shadow: 0 8px 32px rgba(249, 115, 22, 0.05);
    padding: 2.5rem 1.5rem;
}

.metric-title {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.metric-value-huge {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-mono);
    line-height: 1;
    margin: 1rem 0;
    text-shadow: 0 0 20px var(--primary-glow);
    transition: all 0.3s;
}

.metric-sub {
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

.metric-value {
    font-size: 1.75rem;
    font-weight: 600;
    font-family: var(--font-mono);
    margin: 0.75rem 0;
    transition: all 0.3s;
}

.badge {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    font-family: var(--font-mono);
}

.badge.diff {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

/* Progress Bars */
.progress-bar-container {
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.progress-bar {
    height: 100%;
    background: var(--text-muted);
    transition: width 0.3s ease;
}

.progress-bar.gzip-bar {
    background: #3b82f6;
}

.progress-bar.deflate-bar {
    background: #8b5cf6;
}

/* Cost Breakdown */
.cost-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.breakdown-title {
    font-size: 1.05rem;
    font-weight: 600;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.75rem;
    margin-bottom: 0.5rem;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    align-items: center;
}

.breakdown-row .label {
    color: var(--text-muted);
}

.breakdown-row .value {
    font-family: var(--font-mono);
    font-weight: 500;
}

.divider {
    border: none;
    border-top: 1px dashed var(--card-border);
    margin: 0.5rem 0;
}

.total-row .label {
    color: var(--text-main);
    font-weight: 600;
    font-size: 1rem;
}

.total-row .value {
    font-size: 1.25rem;
    font-weight: 700;
}

.label-group {
    display: flex;
    flex-direction: column;
}

.sub-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.savings-banner {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--success);
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--font-mono);
}