/* =============================================
   SQL Query Explainer — style.css
   Dark terminal aesthetic, orange accent
   ============================================= */

:root {
    --primary: #F97316;
    --primary-dim: rgba(249, 115, 22, 0.15);
    --secondary: #FB923C;
    --accent-ok: #22C55E;
    --accent-warn: #EAB308;
    --accent-err: #EF4444;
    --bg: #0A0A0A;
    --bg-surface: #111111;
    --bg-card: #161616;
    --bg-input: #0D0D0D;
    --border: rgba(255, 255, 255, 0.08);
    --text: #E5E7EB;
    --text-muted: #6B7280;
    --text-code: #A3E635;
    --radius: 12px;
    --radius-sm: 8px;
    --header-h: 56px;
    --transition: 0.2s ease;
}

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

html {
    font-size: 15px;
}

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

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(10, 10, 10, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 1.3rem;
}

.logo-text {
    font-weight: 700;
    font-size: 1rem;
}

.logo-badge {
    background: var(--primary-dim);
    color: var(--primary);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 20px;
    border: 1px solid rgba(249, 115, 22, 0.3);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.header-nav {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 4px;
}

.nav-tab {
    padding: 6px 16px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.nav-tab:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 0 10px rgba(249, 115, 22, 0.35);
}

/* ── Main Panels ── */
.main-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    max-width: 1300px;
    width: 100%;
    margin: 0 auto;
}

.main-panel.hidden {
    display: none;
}

/* ── App Layout (split) ── */
.app-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    flex: 1;
    min-height: 0;
}

/* ── Pane ── */
.pane {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pane-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.pane-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-muted);
}

.pane-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}

/* ── SQL Input ── */
.editor-container {
    position: relative;
    flex: 1;
}

.sql-editor {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    line-height: 1.7;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-code);
    padding: 14px;
    resize: none;
    width: 100%;
    min-height: 280px;
    transition: border-color var(--transition);
}

.sql-editor:focus {
    outline: none;
    border-color: var(--primary);
}

.sql-editor::placeholder {
    color: var(--text-muted);
    opacity: 0.55;
}

.dialect-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(249, 115, 22, 0.15);
    color: var(--primary);
    border: 1px solid rgba(249, 115, 22, 0.3);
    border-radius: 6px;
    padding: 2px 8px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    pointer-events: none;
}

/* ── Explanation Panel ── */
.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 0.88rem;
    text-align: center;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-height: 200px;
}

.placeholder-icon {
    font-size: 3rem;
}

.results-wrapper {
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
}

/* ── Results Sections ── */
.section-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }

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

.section-heading {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.section-heading.orange {
    color: var(--primary);
}

.section-heading.green {
    color: var(--accent-ok);
}

.section-heading.yellow {
    color: var(--accent-warn);
}

.section-heading.red {
    color: var(--accent-err);
}

.section-heading.blue {
    color: #60A5FA;
}

/* Summary */
.summary-line {
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.6;
    color: var(--text);
}

/* Clause breakdown */
.clause-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.clause-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 10px;
    align-items: baseline;
}

.clause-keyword {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-dim);
    border-radius: 4px;
    padding: 2px 6px;
    text-align: center;
}

.clause-desc {
    font-size: 0.82rem;
    color: var(--text);
    line-height: 1.6;
}

.clause-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-code);
    background: rgba(0, 0, 0, 0.4);
    border-radius: 4px;
    padding: 2px 6px;
    display: inline;
}

/* Plan steps */
.plan-steps {
    counter-reset: plan-counter;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.plan-step {
    counter-increment: plan-counter;
    display: flex;
    gap: 10px;
    align-items: flex-start;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 0.8rem;
}

.plan-step::before {
    content: counter(plan-counter);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    background: var(--primary);
    color: #000;
    border-radius: 50%;
    font-size: 0.68rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}

.plan-step-content {
    flex: 1;
    line-height: 1.6;
}

.plan-step-label {
    font-weight: 600;
    color: var(--secondary);
}

/* Anti-patterns */
.antipattern-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.antipattern-item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 8px 10px;
    background: rgba(239, 68, 68, 0.07);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
}

.antipattern-icon {
    flex-shrink: 0;
    font-size: 1rem;
    margin-top: 1px;
}

.antipattern-text {
    flex: 1;
    line-height: 1.5;
}

.antipattern-title {
    font-weight: 600;
    color: var(--accent-err);
}

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

/* Tips */
.tip-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tip-item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 8px 10px;
    background: rgba(234, 179, 8, 0.07);
    border: 1px solid rgba(234, 179, 8, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
}

.tip-icon {
    flex-shrink: 0;
}

.tip-text {
    flex: 1;
    line-height: 1.5;
    color: var(--text);
}

.tip-good {
    color: var(--accent-ok);
    font-weight: 600;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: transparent;
}

.btn-primary:hover {
    background: #EA6C0F;
    box-shadow: 0 0 12px rgba(249, 115, 22, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--text-muted);
    border-color: var(--border);
}

.btn-outline:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
    padding: 5px 11px;
    font-size: 0.78rem;
}

.full-width {
    width: 100%;
    justify-content: center;
    margin-top: 4px;
}

/* ── Select ── */
.select-sm {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 0.78rem;
    padding: 5px 9px;
    cursor: pointer;
    appearance: none;
}

.select-sm:focus {
    outline: none;
    border-color: var(--primary);
}

/* ── Reference Panel ── */
.reference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 14px;
}

.ref-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
}

.ref-card-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ref-item {
    margin-bottom: 8px;
}

.ref-keyword {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-code);
}

.ref-desc {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ── Toast ── */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-size: 0.84rem;
    color: var(--text);
    z-index: 999;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.25s ease;
    pointer-events: none;
    max-width: 300px;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 860px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .reference-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 500px) {
    .main-panel {
        padding: 10px 12px;
    }

    .logo-badge {
        display: none;
    }
}