/* =====================================================
   T-SQL Parser — App Styles (Dark Theme)
   ===================================================== */

:root {
    --bg:          #0f1117;
    --bg2:         #161b22;
    --bg3:         #1c2128;
    --border:      #30363d;
    --text:        #e6edf3;
    --text-muted:  #8b949e;
    --accent:      #58a6ff;
    --accent-dim:  #1f6feb;
    --green:       #3fb950;
    --red:         #f85149;
    --yellow:      #d29922;
    --purple:      #bc8cff;
    --orange:      #ffa657;
    --radius:      6px;
    --font-mono:   'Cascadia Code', 'Fira Code', 'Consolas', 'Monaco', monospace;
    --font-ui:     -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Header ---- */
.app-header {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
    height: 52px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}
.header-inner {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { font-size: 22px; }
.brand-name { font-size: 17px; font-weight: 600; color: var(--text); }
.brand-badge {
    background: var(--accent-dim);
    color: #fff;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 500;
}
.header-links { display: flex; gap: 16px; font-size: 13px; }

/* ---- Main layout ---- */
.main-layout {
    display: flex;
    height: calc(100vh - 52px);
    overflow: hidden;
}

/* ---- Editor panel ---- */
.editor-panel {
    display: flex;
    flex-direction: column;
    width: 50%;
    min-width: 320px;
    border-right: 1px solid var(--border);
    background: var(--bg);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    flex-wrap: wrap;
    gap: 6px;
}
.panel-title { font-weight: 600; font-size: 13px; color: var(--text-muted); }

.controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.control-label { font-size: 12px; color: var(--text-muted); }

.version-select {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 4px 8px;
    border-radius: var(--radius);
    font-size: 12px;
    cursor: pointer;
}
.version-select:focus { outline: none; border-color: var(--accent); }

.btn {
    padding: 5px 14px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: opacity .15s;
}
.btn:hover { opacity: .85; }
.btn-parse { background: var(--accent-dim); color: #fff; }
.btn-clear  { background: var(--bg3); color: var(--text-muted); border: 1px solid var(--border); }

.sql-editor {
    flex: 1;
    width: 100%;
    background: var(--bg);
    color: var(--text);
    border: none;
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.6;
    resize: none;
    outline: none;
    tab-size: 4;
}
.sql-editor::placeholder { color: var(--text-muted); }
.sql-editor.editor-error { border-left: 3px solid var(--red); }

/* ---- Samples bar ---- */
.samples-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    flex-shrink: 0;
}
.samples-label { font-size: 11px; color: var(--text-muted); }
.btn-sample {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    cursor: pointer;
    transition: border-color .15s;
}
.btn-sample:hover { border-color: var(--accent); color: var(--accent); }

/* ---- Stats bar ---- */
.stats-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 12px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    flex-shrink: 0;
    flex-wrap: wrap;
}
.stats-ok  { background: rgba(63,185,80,.08); }
.stats-error { background: rgba(248,81,73,.08); }
.stat { color: var(--text-muted); }
.stat-badge {
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 12px;
}
.stat-badge.ok  { background: rgba(63,185,80,.15); color: var(--green); }
.stat-badge.err { background: rgba(248,81,73,.15); color: var(--red); }
.parse-time { color: var(--text-muted); }

/* ---- Result panel ---- */
.result-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    background: var(--bg);
}

/* ---- Tabs ---- */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
    flex-shrink: 0;
}
.tab {
    padding: 10px 18px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color .15s;
}
.tab:hover { color: var(--text); }
.tab-active { color: var(--accent) !important; border-bottom-color: var(--accent) !important; }
.tab-badge {
    background: var(--bg3);
    color: var(--text-muted);
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 20px;
}
.tab-badge.err { background: rgba(248,81,73,.2); color: var(--red); }

/* ---- Tab content ---- */
.tab-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

/* ---- Empty state ---- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
    padding: 40px;
    gap: 12px;
}
.empty-icon { font-size: 48px; opacity: .3; }
.empty-sub { font-size: 12px; max-width: 360px; }

/* ---- Errors ---- */
.no-errors {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--green);
    gap: 10px;
}
.ok-icon { font-size: 40px; }
.error-list { padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.error-item {
    background: rgba(248,81,73,.08);
    border: 1px solid rgba(248,81,73,.3);
    border-left: 3px solid var(--red);
    border-radius: var(--radius);
    padding: 10px 14px;
}
.error-location { font-size: 11px; color: var(--text-muted); margin-bottom: 2px; }
.error-code { font-size: 11px; color: var(--red); font-weight: 600; margin-bottom: 4px; }
.error-msg { font-size: 13px; color: var(--text); font-family: var(--font-mono); }

/* ---- AST tree ---- */
.ast-toolbar {
    display: flex;
    gap: 8px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
    flex-shrink: 0;
}
.btn-sm {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 3px 10px;
    border-radius: var(--radius);
    font-size: 12px;
    cursor: pointer;
}
.btn-sm:hover { color: var(--text); border-color: var(--accent); }

.ast-tree {
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    overflow: auto;
    height: calc(100% - 41px);
}

.ast-node { margin-left: 16px; }
.ast-node:first-child { margin-left: 0; }

.ast-node-header {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 2px 4px;
    border-radius: 4px;
    cursor: default;
    white-space: nowrap;
    user-select: none;
}
.ast-node-header.has-children { cursor: pointer; }
.ast-node-header:hover { background: var(--bg3); }

.ast-toggle { color: var(--text-muted); font-size: 10px; width: 12px; text-align: center; }
.ast-toggle-placeholder { width: 12px; display: inline-block; }
.ast-type { color: var(--accent); font-weight: 600; }
.ast-value { color: var(--orange); }
.ast-pos { color: var(--text-muted); font-size: 10px; }
.ast-child-count { color: var(--text-muted); font-size: 10px; }

.ast-children {
    border-left: 1px solid var(--border);
    margin-left: 6px;
    padding-left: 4px;
}

/* ---- Token table ---- */
.token-filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
    flex-shrink: 0;
}
.token-filter {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 4px 10px;
    border-radius: var(--radius);
    font-size: 12px;
    width: 220px;
}
.token-filter:focus { outline: none; border-color: var(--accent); }

.token-table-wrap {
    overflow: auto;
    height: calc(100% - 41px);
}
.token-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
}
.token-table thead {
    position: sticky;
    top: 0;
    background: var(--bg2);
    z-index: 1;
}
.token-table th {
    padding: 7px 12px;
    text-align: left;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.token-table td {
    padding: 4px 12px;
    border-bottom: 1px solid rgba(48,54,61,.5);
    font-family: var(--font-mono);
}
.token-row:hover td { background: var(--bg3); }
.td-num { color: var(--text-muted); width: 40px; }
.td-text code { font-family: var(--font-mono); }

.token-type {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 11px;
    background: var(--bg3);
    color: var(--text-muted);
}

/* Token type colors */
.tok-keyword .token-type { background: rgba(88,166,255,.12); color: var(--accent); }
.tok-keyword td { color: var(--accent); }
.tok-identifier .token-type { background: rgba(255,166,87,.1); color: var(--orange); }
.tok-string .token-type { background: rgba(63,185,80,.1); color: var(--green); }
.tok-string td { color: var(--green); }
.tok-number .token-type { background: rgba(188,140,255,.1); color: var(--purple); }
.tok-number td { color: var(--purple); }
.tok-comment .token-type { background: rgba(139,148,158,.1); color: var(--text-muted); }
.tok-comment td { color: var(--text-muted); font-style: italic; }
.tok-punct .token-type { background: rgba(210,153,34,.1); color: var(--yellow); }

/* ---- Formatted SQL ---- */
.formatted-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
}
.formatted-note { font-size: 11px; color: var(--text-muted); }
.formatted-sql {
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.7;
    color: var(--text);
    white-space: pre;
    overflow: auto;
    height: calc(100% - 41px);
    background: var(--bg);
}

/* ---- CodeMirror host ---- */
.cm-host {
    flex: 1;
    overflow: hidden;
    min-height: 0;
    display: flex;
    flex-direction: column;
}
.cm-host > .cm-editor {
    flex: 1;
    height: 100%;
    min-height: 0;
}
.cm-host.cm-host-error > .cm-editor {
    border-left: 3px solid var(--red);
}
/* Remove the old textarea style since we replaced it */
.sql-editor { display: none; }

/* ---- Scrollbars ---- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #484f58; }

/* ---- Loading progress ---- */
.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}
.loading-progress circle {
    fill: none;
    stroke: #30363d;
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}
.loading-progress circle:last-child {
    stroke: var(--accent);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}
.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
    color: var(--text-muted);
}
.loading-progress-text:after { content: var(--blazor-load-percentage-text, "Loading"); }

/* ---- Blazor error UI ---- */
#blazor-error-ui {
    background: rgba(248,81,73,.9);
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0,0,0,.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: #fff;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }

/* ---- Sample groups ---- */
.samples-outer {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    max-height: 120px;
    overflow-y: auto;
}
.sample-group {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 4px 12px;
    flex-wrap: wrap;
    border-bottom: 1px solid rgba(48,54,61,.4);
}
.sample-group:last-child { border-bottom: none; }
.sample-group-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    min-width: 64px;
    flex-shrink: 0;
}
.btn-sample {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 2px 9px;
    border-radius: 20px;
    font-size: 11px;
    cursor: pointer;
    transition: border-color .15s, color .15s;
}
.btn-sample:hover { border-color: var(--accent); color: var(--accent); }
.btn-sample-active {
    border-color: var(--accent) !important;
    color: var(--accent) !important;
    background: rgba(88,166,255,.1) !important;
}
.btn-sample-danger { border-color: rgba(248,81,73,.4); color: var(--red); }
.btn-sample-danger:hover { border-color: var(--red); color: var(--red); }
.btn-sample-danger.btn-sample-active {
    border-color: var(--red) !important;
    color: var(--red) !important;
    background: rgba(248,81,73,.1) !important;
}

/* ---- Safe Version button ---- */
.btn-safe {
    background: rgba(63,185,80,.12);
    color: var(--green);
    border: 1px solid rgba(63,185,80,.4);
    padding: 5px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity .15s;
}
.btn-safe:hover { opacity: .85; }

/* ---- Safe Version tab ---- */
.tab-safe { color: var(--green) !important; }
.tab-safe.tab-active { border-bottom-color: var(--green) !important; }

/* ---- Diff view ---- */
.diff-view {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}
.diff-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
    flex-shrink: 0;
}
.diff-col-header {
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 600;
}
.diff-before-header { border-right: 1px solid var(--border); }
.diff-label-danger { color: var(--red); }
.diff-label-safe   { color: var(--green); }

.diff-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}
.diff-col {
    overflow-y: auto;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
    padding: 8px 0;
    background: var(--bg);
}
.diff-before { border-right: 1px solid var(--border); }

.diff-line {
    display: flex;
    align-items: flex-start;
    gap: 0;
    white-space: pre;
    padding: 0 8px 0 0;
}
.diff-gutter {
    min-width: 32px;
    text-align: right;
    padding-right: 10px;
    color: var(--text-muted);
    font-size: 11px;
    user-select: none;
    flex-shrink: 0;
    opacity: .5;
}
.diff-ctx     { color: var(--text); }
.diff-removed { background: rgba(248,81,73,.12); color: var(--red); }
.diff-removed .diff-gutter::before { content: "−"; color: var(--red); }
.diff-added   { background: rgba(63,185,80,.10); color: var(--green); }
.diff-added   .diff-gutter::before { content: "+"; color: var(--green); }

.diff-explanation {
    padding: 14px 18px;
    border-top: 1px solid var(--border);
    background: var(--bg2);
    font-size: 13px;
    line-height: 1.7;
    color: var(--text);
    flex-shrink: 0;
    max-height: 140px;
    overflow-y: auto;
}
.diff-explanation p { margin-bottom: 6px; }
.diff-explanation p:last-child { margin-bottom: 0; }
.diff-explanation code {
    background: var(--bg3);
    padding: 1px 5px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--orange);
}
.diff-explanation em { color: var(--accent); font-style: normal; font-weight: 600; }