:root {
    --primary: #636E72;
    --secondary: #B2BEC3;
    --accent: #6C5CE7;
    --accent-hover: #5A4BD1;
    --bg: #0D1117;
    --bg-panel: rgba(22, 27, 34, 0.8);
    --border: rgba(255, 255, 255, 0.08);
    --text: #E6EDF3;
    --text-muted: #8B949E;
    --success: #3FB950;
    --warning: #D29922;
    --error: #F85149;
    --radius: 12px;
    --transition: all 0.25s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    background: radial-gradient(ellipse at top left, rgba(108, 92, 231, 0.08), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(99, 110, 114, 0.06), transparent 50%),
        var(--bg);
}

.app {
    width: 100%;
    max-width: 900px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.hidden {
    display: none !important;
}

/* Header */
header {
    padding: 1.5rem;
    text-align: center;
}

h1 {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    margin-top: 0.3rem;
    font-size: 0.95rem;
}

/* Cards */
.card {
    padding: 1.5rem;
}

.card h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Input */
.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.input-row {
    display: flex;
    gap: 0.75rem;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.3);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition);
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

textarea {
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.85rem;
}

.hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    padding: 0.55rem 1.1rem;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    color: #fff;
}

.btn.primary {
    background: var(--accent);
}

.btn.primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

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

.btn.secondary:hover {
    background: rgba(108, 92, 231, 0.1);
}

.btn-copy {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    transition: var(--transition);
}

.btn-copy:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Tabs */
.tabs {
    display: flex;
    padding: 0.35rem;
    gap: 0.25rem;
    overflow-x: auto;
}

.tab {
    flex: 1;
    padding: 0.55rem 0.8rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}

.tab:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.tab.active {
    background: var(--accent);
    color: #fff;
}

/* Score Ring */
.score-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.score-ring-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
}

.score-ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.06);
    stroke-width: 8;
}

.score-ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 326.73;
    stroke-dashoffset: 326.73;
    transition: stroke-dashoffset 1s ease, stroke 0.5s ease;
}

.score-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.6rem;
    font-weight: 700;
}

.score-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.score-grade {
    font-size: 1.3rem;
    font-weight: 700;
}

.score-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 300px;
}

/* Results */
.results-container {
    margin-top: 1rem;
}

.result-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    line-height: 1.5;
}

.result-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.result-item.pass {
    border-left: 3px solid var(--success);
}

.result-item.warn {
    border-left: 3px solid var(--warning);
}

.result-item.fail {
    border-left: 3px solid var(--error);
}

.result-item.info {
    border-left: 3px solid var(--accent);
}

/* Wizard */
.wizard-steps {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.wizard-step {
    display: flex;
    gap: 1rem;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
    font-size: 0.9rem;
}

.step-content h3 {
    font-size: 1rem;
    margin-bottom: 0.35rem;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.code-block {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.8rem;
    overflow-x: auto;
    margin-bottom: 0.5rem;
}

.code-block code {
    flex: 1;
    white-space: nowrap;
}

details {
    margin-top: 0.5rem;
}

summary {
    cursor: pointer;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 500;
}

details ul,
details ol {
    padding-left: 1.5rem;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

details li {
    margin-bottom: 0.3rem;
}

.provider-list code {
    background: rgba(108, 92, 231, 0.15);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Footer */
footer {
    padding: 1rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

@media (max-width: 640px) {
    .input-row {
        flex-direction: column;
    }

    .score-card {
        flex-direction: column;
        text-align: center;
    }

    .tabs {
        flex-wrap: nowrap;
    }

    .tab {
        font-size: 0.85rem;
        padding: 0.5rem;
    }
}