/* CodePal — layered on top of style.css (shared tokens, panels, mic float,
   modal and the phone tab-bar rules all come from there). */

:root {
    --warn: #f5b454;
    --trap: #ff6b6b;
}

/* ===== Laptop layout: problem | approaches (hero) | walkthrough ===== */
.code-grid {
    grid-template-columns: 320px minmax(0, 1fr) 500px;
}

/* The mic/transcript stack floats over the bottom-right of the viewport,
   which is column 3. Pad its scroller so nothing sits permanently under it. */
.code-grid .col-3 .panel-scroll { padding-bottom: 130px; }

.code-grid .col-1 .problem-panel,
.code-grid .col-2 .approaches-panel,
.code-grid .col-3 .walkthrough-panel { flex: 1; min-height: 0; }

/* Every panel gets one scroller. */
.panel-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.panel-scroll.thinking { opacity: 0.55; transition: opacity 0.15s; }

.cp-section { display: flex; flex-direction: column; gap: 6px; }
.cp-label {
    font: 10px/1 ui-monospace, monospace;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-dim);
}
.muted { color: var(--text-dim); font-style: italic; }

.cp-list { margin: 0; padding-left: 18px; font-size: 13px; line-height: 1.55; }
.cp-list li { margin: 3px 0; }
.cp-list.chips { list-style: none; padding-left: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.cp-list.chips li {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 3px 10px;
    font: 12px/1.4 ui-monospace, monospace;
    margin: 0;
}
.cp-list.chips li.muted { background: transparent; border-style: dashed; }

/* ===== Problem column ===== */
.mode-badge {
    font: 700 10px/1 ui-monospace, monospace;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 5px 9px;
    border-radius: 4px;
    background: var(--bg-panel-alt);
    border: 1px solid var(--border);
    color: var(--text-dim);
}
.mode-badge.mode-algorithm { color: var(--accent); border-color: var(--accent); background: rgba(94, 176, 255, 0.12); }
.mode-badge.mode-practical { color: var(--good); border-color: var(--good); background: rgba(74, 222, 128, 0.12); }
.mode-badge.mode-system_design { color: var(--warn); border-color: var(--warn); background: rgba(245, 180, 84, 0.12); }

.restated {
    background: rgba(94, 176, 255, 0.06);
    border-left: 3px solid var(--accent);
    padding: 10px 12px;
    border-radius: 0 6px 6px 0;
    font-size: 14px;
    line-height: 1.55;
}

.clarifying li { color: var(--text); }
.edge-cases li { font: 12px/1.5 ui-monospace, monospace; color: var(--text); }

.terminology { list-style: none; padding-left: 0; }
.terminology li { margin: 6px 0; }
.terminology .term { font-weight: 700; color: var(--accent); }
.terminology .term-def { color: var(--text-dim); font-size: 12px; display: block; }

/* ===== Approaches column ===== */
.header-meta { display: flex; align-items: center; gap: 8px; }
.approach-count {
    font: 11px/1 ui-monospace, monospace;
    color: var(--text-dim);
}
.freshness {
    font: 10px/1 ui-monospace, monospace;
    color: var(--good);
    padding: 3px 7px;
    border-radius: 999px;
    background: rgba(74, 222, 128, 0.12);
}
.freshness:empty { display: none; }
.freshness.stale { color: var(--warn); background: rgba(245, 180, 84, 0.12); }
.approach-count.pulsing { color: var(--accent); animation: cp-pulse 1s ease-in-out infinite; }
@keyframes cp-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.say-next {
    background: linear-gradient(90deg, rgba(74, 222, 128, 0.14), rgba(74, 222, 128, 0.03));
    border: 1px solid rgba(74, 222, 128, 0.35);
    border-left: 3px solid var(--good);
    border-radius: 0 8px 8px 0;
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.say-next[hidden] { display: none; }
.say-next-text {
    font-size: 16px;
    line-height: 1.5;
    color: #fff;
    font-weight: 600;
}

/* Plain-language framing — the analogy is the headline, the summary backs it up */
.explainer {
    background: rgba(245, 180, 84, 0.06);
    border: 1px solid rgba(245, 180, 84, 0.28);
    border-left: 3px solid var(--warn);
    border-radius: 0 8px 8px 0;
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.explainer[hidden] { display: none; }
.explainer .cp-label { color: var(--warn); }
.explainer-topic { color: var(--text-dim); text-transform: none; letter-spacing: 0; }
.explainer-analogy {
    font-size: 15px;
    line-height: 1.55;
    color: #fff;
    font-weight: 600;
}
.explainer-analogy[hidden], .explainer-summary[hidden] { display: none; }
.explainer-summary {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-dim);
    padding-top: 6px;
    border-top: 1px dashed var(--border);
}

.term-analogy {
    display: block;
    font-size: 12px;
    line-height: 1.5;
    color: var(--warn);
    font-style: italic;
    margin-top: 2px;
}

.wt-analogy {
    background: rgba(245, 180, 84, 0.07);
    border-left: 3px solid var(--warn);
    border-radius: 0 6px 6px 0;
    padding: 9px 12px;
    font-size: 14px;
    line-height: 1.55;
    color: var(--text);
}

.gotchas { display: flex; flex-direction: column; gap: 6px; }
.gotchas[hidden] { display: none; }
.gotcha {
    background: rgba(255, 107, 107, 0.07);
    border-left: 3px solid var(--danger);
    border-radius: 0 6px 6px 0;
    padding: 8px 12px;
    font-size: 13px;
    line-height: 1.5;
}
.gotcha-issue { color: var(--text); font-weight: 600; }
.gotcha-fix { display: block; color: var(--text-dim); font-size: 12px; font-style: italic; margin-top: 2px; }

.approach-list { display: flex; flex-direction: column; gap: 10px; }
.approach-list.thinking { opacity: 0.55; }

.approach {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border);
    border-left: 3px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, transform 0.1s;
    animation: slideIn 0.2s ease-out;
}
.approach:hover { border-color: var(--text-dim); background: rgba(255, 255, 255, 0.02); }
.approach:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.approach:active { transform: scale(0.995); }
.approach.verdict-recommended { border-left-color: var(--good); }
.approach.verdict-trap { border-left-color: var(--trap); opacity: 0.85; }
.approach.verdict-viable { border-left-color: var(--accent); }
.approach.chosen {
    border-color: var(--accent);
    background: rgba(94, 176, 255, 0.08);
    box-shadow: inset 0 0 0 1px rgba(94, 176, 255, 0.25);
}

.approach-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}
.approach-name { font-size: 15px; font-weight: 700; color: var(--text); }
.verdict-badge {
    font: 700 9px/1 ui-monospace, monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 4px 7px;
    border-radius: 3px;
    white-space: nowrap;
}
.verdict-badge.verdict-recommended { background: rgba(74, 222, 128, 0.18); color: var(--good); }
.verdict-badge.verdict-viable { background: rgba(94, 176, 255, 0.15); color: var(--accent); }
.verdict-badge.verdict-trap { background: rgba(255, 107, 107, 0.18); color: var(--trap); }

.approach-idea { margin: 0 0 8px 0; font-size: 13px; line-height: 1.55; color: var(--text); }

.approach-complexity { display: flex; gap: 14px; margin-bottom: 8px; }
.cx { font: 12px/1 ui-monospace, monospace; color: var(--text); }
.cx-k { color: var(--text-dim); font-size: 10px; text-transform: uppercase; letter-spacing: 0.8px; margin-right: 4px; }

.proscons { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pc-label {
    font: 9px/1 ui-monospace, monospace;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    margin-bottom: 3px;
}
.pros .pc-label { color: var(--good); }
.cons .pc-label { color: var(--warn); }
.proscons ul { margin: 0; padding-left: 15px; font-size: 12px; line-height: 1.5; }
.proscons li { margin: 2px 0; }

.when-to-use {
    margin-top: 8px;
    padding-top: 7px;
    border-top: 1px dashed var(--border);
    font-size: 12px;
    color: var(--text-dim);
    font-style: italic;
}
.approach-cta {
    margin-top: 8px;
    font: 700 11px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    letter-spacing: 0.4px;
    color: var(--accent);
    text-align: right;
}
.approach.chosen .approach-cta { color: var(--good); }

/* ===== Walkthrough column ===== */
.wt-header-actions { display: flex; gap: 6px; }
.wt-btn { margin-top: 0; }
.wt-btn[hidden] { display: none; }

.wt-title { font-size: 16px; font-weight: 700; color: var(--accent); }
.wt-complexity {
    font: 12px/1.5 ui-monospace, monospace;
    color: var(--text-dim);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 7px 10px;
}

.wt-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.wt-step { display: grid; grid-template-columns: 22px 1fr; gap: 9px; align-items: start; }
.wt-step-n {
    font: 700 11px/20px ui-monospace, monospace;
    text-align: center;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: rgba(94, 176, 255, 0.15);
    color: var(--accent);
}
.wt-step-body { display: flex; flex-direction: column; gap: 2px; }
.wt-say { font-size: 14px; line-height: 1.5; color: var(--text); }
.wt-why { font-size: 11px; color: var(--text-dim); font-style: italic; }

.wt-code-label { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.copy-code-btn { margin-top: 0; padding: 3px 10px; font-size: 11px; }
.wt-code pre {
    margin: 0;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
    overflow-x: auto;
}
.wt-code code { font: 11.5px/1.65 ui-monospace, monospace; }
.wt-code p { margin: 6px 0; font-size: 13px; }

.wt-tests { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 5px; }
.wt-test {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font: 12px/1.5 ui-monospace, monospace;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 6px 9px;
}
.wt-test .t-in { color: var(--text); background: transparent; padding: 0; }
.wt-test .t-arrow { color: var(--text-dim); }
.wt-test .t-out { color: var(--good); background: transparent; padding: 0; }

.wt-followups li { color: var(--text-dim); }

/* ===== Narrow laptop / large tablet ===== */
@media (max-width: 1500px) {
    .code-grid { grid-template-columns: 300px minmax(0, 1fr) 400px; }
}
@media (max-width: 1250px) {
    .code-grid { grid-template-columns: minmax(0, 1fr) 380px; }
    .code-grid .col-1 { display: none; }   /* problem folds into the phone tabs below this */
}

/* ===== Phone =====
   style.css already turns .main-grid into a tabbed single column at 960px
   and restyles the float stack + modal. Only CodePal-specific sizing here. */
@media (max-width: 960px) {
    .code-grid { grid-template-columns: 1fr; }
    .code-grid .col-1 { display: none; }   /* re-shown by the [data-mtab] rules */

    /* The page is the scroller on phones — panels grow to their content. */
    .code-grid .col-1 .problem-panel,
    .code-grid .col-2 .approaches-panel,
    .code-grid .col-3 .walkthrough-panel { flex: 0 0 auto; }
    .panel-scroll { overflow: visible; flex: 0 0 auto; }

    /* Bigger type — this is read at arm's length, mid-sentence. */
    .say-next-text { font-size: 17px; }
    .restated { font-size: 15px; }
    .approach-name { font-size: 16px; }
    .approach-idea { font-size: 14px; }
    .wt-say { font-size: 15px; }
    .cp-list, .proscons ul { font-size: 13px; }
    .wt-code code { font-size: 12.5px; line-height: 1.7; }

    /* Pros and cons stack rather than squeeze into two 180px columns. */
    .proscons { grid-template-columns: 1fr; gap: 8px; }

    /* Whole card is the tap target — make it comfortable. */
    .approach { padding: 14px; }
    .approach-cta { font-size: 12px; padding-top: 4px; }

    .wt-step { grid-template-columns: 24px 1fr; }
    .wt-header-actions button { padding: 8px 10px; font-size: 12px; }

    .swap-app-btn { width: 40px; height: 40px; line-height: 38px; }
}

@media (max-width: 960px) and (max-height: 500px) {
    .swap-app-btn { width: 34px; height: 34px; line-height: 32px; font-size: 11px; }
}