:root {
    --primary: #00CEC9;
    --primary-hover: #00B1AB;
    --secondary: #81ECEC;
    --accent: #E17055;
    --accent-glow: rgba(225, 112, 85, 0.2);

    --bg-dark: #0A1A1A;
    --bg-panel: #112828;
    --bg-input: #183636;

    --text-main: #F3F4F6;
    --text-muted: #9CA3AF;
    --border: #244C4C;

    --error: #FF7675;
    --error-bg: rgba(255, 118, 117, 0.1);
    --warn: #FDCB6E;
    --warn-bg: rgba(253, 203, 110, 0.1);
    --info: #74B9FF;
    --info-bg: rgba(116, 185, 255, 0.1);
    --success: #00B894;

    --radius-sm: 6px;
    --radius-md: 12px;
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

.layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.header {
    padding: 1.25rem 2rem;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.02em;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-sans);
}

.btn.primary {
    background: var(--primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(0, 206, 201, 0.25);
}

.btn.primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.1);
}

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

.btn.secondary:hover {
    color: var(--text-main);
    background: var(--bg-input);
    border-color: var(--secondary);
}

/* Workspace */
.workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
    flex-grow: 1;
    height: calc(100vh - 75px);
}

.pane {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.pane-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pane-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--secondary);
}

.pane-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Editor */
#yaml-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    color: var(--text-main);
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    resize: none;
    width: 100%;
}

#yaml-input:focus {
    outline: none;
}

#yaml-input::placeholder {
    color: #4B6E6E;
}

.status-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
    background: var(--bg-input);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

/* Results */
.results-container {
    padding: 1.5rem;
    overflow-y: auto;
    background: var(--bg-dark);
}

.summary-counts {
    display: flex;
    gap: 0.75rem;
}

.count {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-weight: 600;
    display: none;
}

.count.error {
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid rgba(255, 118, 117, 0.3);
}

.count.warn {
    background: var(--warn-bg);
    color: var(--warn);
    border: 1px solid rgba(253, 203, 110, 0.3);
}

.count.info {
    background: var(--info-bg);
    color: var(--info);
    border: 1px solid rgba(116, 185, 255, 0.3);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    opacity: 0.6;
    text-align: center;
    px: 2rem;
}

.empty-icon {
    color: var(--primary);
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Rule Items */
.rule-item {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    margin-bottom: 1rem;
    border-left-width: 4px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.rule-item.error {
    border-left-color: var(--error);
    box-shadow: 0 2px 10px var(--error-bg);
}

.rule-item.warn {
    border-left-color: var(--warn);
    box-shadow: 0 2px 10px var(--warn-bg);
}

.rule-item.info {
    border-left-color: var(--info);
    box-shadow: 0 2px 10px var(--info-bg);
}

.rule-item.success {
    border-left-color: var(--success);
}

.rule-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.rule-title {
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rule-line {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-input);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.rule-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.rule-snippet {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--secondary);
    overflow-x: auto;
}

.rule-snippet .highlight {
    color: var(--error);
    font-weight: 600;
}

.rule-snippet.warn-snip .highlight {
    color: var(--warn);
}

.rule-snippet.info-snip .highlight {
    color: var(--info);
}

.success-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
    text-align: center;
}

.success-icon {
    color: var(--success);
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(0, 184, 148, 0.4));
}

.success-state h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: white;
}

.success-state p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}