:root {
    --primary: #6C63FF;
    --primary-hover: #5A52E0;
    --primary-glow: rgba(108, 99, 255, .25);
    --secondary: #818CF8;
    --accent: #10B981;
    --accent-warn: #F59E0B;
    --accent-red: #EF4444;
    --bg: #0B0E17;
    --bg-surface: #131829;
    --bg-elevated: #1C2237;
    --bg-card: rgba(28, 34, 55, .8);
    --text: #E2E8F0;
    --text-secondary: #8892B0;
    --text-muted: #4A5568;
    --border: rgba(108, 99, 255, .12);
    --border-strong: rgba(108, 99, 255, .25);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Fira Code', 'Cascadia Code', monospace;
    --transition: 250ms cubic-bezier(.4, 0, .2, 1)
}

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

html,
body {
    min-height: 100%;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased
}

.hidden {
    display: none !important
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px
}

.header h1 {
    font-size: 1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.header-actions {
    display: flex;
    gap: 8px
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-family: var(--font);
    font-size: .8rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: all var(--transition)
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    box-shadow: 0 2px 12px var(--primary-glow)
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--primary-glow)
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text);
    border: 1px solid var(--border)
}

.btn-secondary:hover {
    border-color: var(--border-strong)
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent
}

.btn-ghost:hover {
    color: var(--text);
    background: var(--bg-elevated)
}

.btn-lg {
    padding: 12px 28px;
    font-size: .9rem;
    border-radius: var(--radius)
}

.main {
    max-width: 1040px;
    margin: 0 auto;
    padding: 24px
}

.section-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px
}

.config-panel {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px
}

.config-card {
    display: flex;
    flex-direction: column;
    gap: 6px
}

.config-card label {
    font-size: .72rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: .05em
}

.input,
select {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    font-family: var(--font);
    font-size: .82rem;
    outline: none;
    transition: border-color var(--transition)
}

.input:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow)
}

select {
    appearance: none;
    padding-right: 24px;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238892B0' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center
}

.range-input {
    width: 100%;
    accent-color: var(--primary)
}

.range-val {
    font-size: .75rem;
    font-weight: 600;
    color: var(--primary)
}

.action-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap
}

.live-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .75rem;
    color: var(--accent-warn);
    font-weight: 600
}

.pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-warn);
    animation: pulse 1s ease infinite
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1)
    }

    50% {
        opacity: .5;
        transform: scale(.8)
    }
}

.results-panel {
    margin-top: 0
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 20px
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    text-align: center
}

.stat-label {
    display: block;
    font-size: .65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: 6px
}

.stat-num {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text)
}

.stat-success {
    color: var(--accent)
}

.stat-error {
    color: var(--accent-red)
}

.stat-latency {
    color: var(--primary)
}

.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px
}

.chart-title {
    font-size: .8rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 14px
}

.chart {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 120px;
    padding-bottom: 20px;
    position: relative
}

.chart-bar {
    flex: 1;
    max-width: 16px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 3px 3px 0 0;
    min-height: 2px;
    transition: height .3s ease;
    position: relative;
    cursor: pointer
}

.chart-bar:hover {
    opacity: .8
}

.chart-bar.error {
    background: linear-gradient(180deg, var(--accent-red), #DC2626)
}

.chart-bar-label {
    position: absolute;
    bottom: -18px;
    left: 50%;
    transform: translateX(-50%);
    font-size: .55rem;
    color: var(--text-muted);
    white-space: nowrap
}

.log-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px
}

.log-list {
    max-height: 320px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px
}

.log-list::-webkit-scrollbar {
    width: 5px
}

.log-list::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 3px
}

.log-entry {
    display: grid;
    grid-template-columns: 60px 48px 1fr 80px 80px;
    gap: 8px;
    align-items: center;
    padding: 6px 10px;
    border-radius: var(--radius-xs);
    font-size: .72rem;
    font-family: var(--font-mono);
    transition: background var(--transition)
}

.log-entry:hover {
    background: var(--bg-elevated)
}

.log-id {
    color: var(--text-muted)
}

.log-method {
    font-weight: 700;
    font-size: .65rem;
    text-transform: uppercase
}

.log-method.get {
    color: var(--accent)
}

.log-method.post {
    color: var(--accent-warn)
}

.log-method.put {
    color: var(--secondary)
}

.log-method.delete {
    color: var(--accent-red)
}

.log-url {
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.log-status {
    font-weight: 700;
    text-align: right
}

.log-status.success {
    color: var(--accent)
}

.log-status.error {
    color: var(--accent-red)
}

.log-status.timeout {
    color: var(--accent-warn)
}

.log-time {
    text-align: right;
    color: var(--primary);
    font-weight: 600
}

.log-empty {
    text-align: center;
    padding: 32px;
    color: var(--text-muted);
    font-size: .82rem
}

@media(max-width:768px) {
    .stats-row {
        grid-template-columns: repeat(3, 1fr)
    }

    .config-grid {
        grid-template-columns: 1fr 1fr
    }

    .log-entry {
        grid-template-columns: 48px 40px 1fr 60px
    }
}

@media(max-width:480px) {
    .stats-row {
        grid-template-columns: repeat(2, 1fr)
    }

    .config-grid {
        grid-template-columns: 1fr
    }

    .main {
        padding: 16px
    }

    .log-entry {
        grid-template-columns: 1fr 60px;
        gap: 4px
    }

    .log-id,
    .log-url {
        display: none
    }
}