/* ============================================================
   Connect-the-thoughts — styles
   Built on shared Connect the Thoughts tokens (tokens.css).
   ============================================================ */

/* ---- Per-game accent — emerald tone, both themes. ---- */
:root {
    --accent: var(--tone-emerald-fg);
    --accent-hover: var(--tone-emerald-fg);

    /* Correctness palette — pulled toward arcade tones so the puzzle
       feels cohesive with the rest of the launcher. */
    --correct: var(--tone-emerald-fg);
    --correct-fade: var(--tone-emerald-bg);
    --partial: var(--tone-amber-fg);
    --partial-fg: #1a1a1a;
    --incorrect: #dc2626;

    /* Difficulty pill colors — kept distinct enough to read at a glance. */
    --easy-bg:   var(--tone-emerald-fg);
    --medium-bg: var(--tone-amber-fg);
    --hard-bg:   #dc2626;

    --grid-gap: 5px;
    --overlay-bg: rgba(15, 23, 42, 0.55);
}

[data-theme="dark"] {
    --accent: var(--tone-emerald-fg);
    --accent-hover: var(--tone-emerald-fg);

    --correct: var(--tone-emerald-fg);
    --correct-fade: var(--tone-emerald-bg);
    --partial: var(--tone-amber-fg);
    --partial-fg: #1a1006;
    --incorrect: #f87171;

    --easy-bg:   var(--tone-emerald-fg);
    --medium-bg: var(--tone-amber-fg);
    --hard-bg:   #f87171;

    --overlay-bg: rgba(0, 0, 0, 0.65);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-sans, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    -webkit-user-select: none;
    user-select: none;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

:focus-visible {
    outline: 2px solid var(--focus, #2563eb);
    outline-offset: 2px;
    border-radius: 4px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 8px;
    background: var(--bg-elev);
    color: var(--fg);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}
.skip-link:focus { left: 8px; }

#app {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    width: 100%;
    padding-bottom: 30px;
}

/* ===== Top bar — chrome.css provides .topbar/.brand/.icon-button.
   This block adds CTT-specific overrides only. ===== */
.topbar {
    max-width: 1100px;
    margin: 0 auto;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 12px clamp(14px, 4vw, 24px);
}

.topbar-actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.icon-button:active { transform: scale(0.97); }

/* ===== Sub-bar: status badges (difficulty, daily, streak) ===== */
#statusBar {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    padding: 10px 16px;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge:empty { display: none; }

.badge.easy { background: var(--easy-bg); }
.badge.medium { background: var(--medium-bg); }
.badge.hard { background: var(--hard-bg); color: #fff; }
.badge.streak {
    background: #ea580c;
    text-transform: none;
    letter-spacing: 0;
}
[data-theme="dark"] .badge.streak { background: #fb923c; color: #1a1006; }
.badge.daily {
    background: var(--tone-emerald-fg);
    color: var(--bg-elev);
    text-transform: none;
    letter-spacing: 0;
    padding: 4px 10px;
}
.badge.hidden { display: none; }

/* ===== Game container ===== */
#game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 500px;
    padding: 0 12px;
    text-transform: capitalize;
    position: relative;
}

/* ===== Grid ===== */
#grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--grid-gap);
    width: 100%;
    max-width: 380px;
    margin: 8px auto;
}

#grid .cell {
    border: 1px solid var(--border);
    min-height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    text-align: center;
    word-break: break-word;
}

#grid .cell.droppable {
    background-color: var(--bg-elev);
    transition: background-color 0.2s ease, transform 0.15s ease;
}

#grid .cell.heading {
    background-color: var(--bg);
    border-color: var(--border-strong);
    font-weight: 700;
    color: var(--fg);
}

#grid .cell.drag-over {
    background-color: var(--border-strong) !important;
    transform: scale(1.05);
}

#grid .cell.keyboard-focus {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.top-left-cell {
    visibility: hidden;
}

/* ===== Tiles ===== */
#tiles {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    padding: 12px 6px;
    width: 100%;
    max-width: 380px;
    min-height: 130px;
    text-transform: capitalize;
    border-radius: var(--radius-md);
}

.tile {
    border: 1px solid var(--border-strong);
    padding: 4px 6px;
    cursor: grab;
    user-select: none;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 44px;
    min-width: 44px;
    background-color: var(--bg-elev);
    color: var(--fg);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: background-color 0.2s ease, transform 0.15s ease, opacity 0.2s ease, box-shadow 0.15s ease;
    font-size: 14px;
    position: relative;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    touch-action: none;
}

/* Buttons get touch-action: manipulation so taps respond immediately on mobile */
button, .icon-button, #difficultyFilter {
    touch-action: manipulation;
}

@keyframes tilePlaced {
    0%   { transform: scale(0.85); }
    60%  { transform: scale(1.08); }
    100% { transform: scale(1); }
}
#grid .cell.droppable .tile.just-placed {
    animation: tilePlaced 0.22s ease-out;
}

#grid .cell.droppable .tile {
    width: calc(100% - 2px);
    min-width: 0;
}

.tile:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.tile.dragging { opacity: 0.5; cursor: grabbing; }
.tile.keyboard-focus { outline: 3px solid var(--accent); outline-offset: 2px; }
.tile.picked-up {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

/* Correctness states */
.clue-correct {
    background-color: var(--correct) !important;
    color: white;
    opacity: 0.95;
}
.clue-partial {
    background-color: var(--partial) !important;
    color: var(--partial-fg);
}
.clue-incorrect {
    background-color: var(--incorrect) !important;
    color: white;
}

/* Color-blind icon indicators */
[data-colorblind="true"] .clue-correct::before { content: "✓ "; font-weight: bold; }
[data-colorblind="true"] .clue-partial::before { content: "~ "; font-weight: bold; }
[data-colorblind="true"] .clue-incorrect::before { content: "✗ "; font-weight: bold; }

.legend-correct { color: var(--correct); font-weight: 700; }
.legend-partial { color: var(--partial); font-weight: 700; }
.legend-incorrect { color: var(--incorrect); font-weight: 700; }

/* Cells when row/col all-correct (hard mode) */
.all-correct {
    background-color: var(--correct-fade) !important;
}

/* Locked cells: prevent further interaction */
.locked { pointer-events: none; }
.tile.locked-in { cursor: default; }

/* Revealed answer at end-of-game */
.revealed-answer {
    background-color: var(--tone-emerald-bg) !important;
    font-style: italic;
    color: var(--accent);
    font-weight: 700;
}

/* ===== Hearts ===== */
#heartsContainer {
    display: flex;
    justify-content: center;
    margin: 8px 0;
    min-height: 36px;
}

.heart {
    font-size: 28px;
    margin: 0 4px;
    transition: opacity 0.3s, transform 0.3s;
}

.heart.lost {
    opacity: 0.25;
    transform: scale(0.85);
}

/* ===== Result message ===== */
#result {
    text-align: center;
    font-weight: 700;
    margin: 8px 0;
    min-height: 1.4em;
    font-size: 18px;
    color: var(--fg);
}

/* ===== Buttons ===== */
button {
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, transform 0.1s, color 0.15s;
    font-size: 15px;
    padding: 10px 16px;
    min-height: 44px;
    background: var(--bg-elev);
    color: var(--fg);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
    font-family: inherit;
}

button:active { transform: scale(0.97); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

#primaryActions {
    display: flex;
    gap: 8px;
    margin: 4px 0 8px;
    width: 100%;
    max-width: 380px;
}

#checkAnswers {
    background-color: var(--accent);
    color: var(--bg-elev);
    border-color: var(--accent);
    flex: 2;
}
#checkAnswers:hover:not(:disabled) {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    filter: brightness(1.05);
}

#hintButton {
    background-color: var(--bg-elev);
    color: var(--accent);
    border-color: var(--border);
    flex: 1;
    position: relative;
}
#hintButton:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent-hover);
}

#undoButton {
    background-color: var(--bg-elev);
    color: var(--fg-muted);
    border-color: var(--border);
    flex: 1;
}
#undoButton:hover:not(:disabled) {
    color: var(--fg);
    border-color: var(--border-strong);
}

.hint-count {
    display: inline-flex;
    background: rgba(0,0,0,0.18);
    border-radius: 12px;
    padding: 1px 7px;
    font-size: 12px;
    margin-left: 4px;
    min-width: 18px;
    justify-content: center;
}
[data-theme="dark"] .hint-count { background: rgba(255,255,255,0.16); }
.hint-count.hidden { display: none; }

#dailyDoneBanner {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    color: var(--fg);
    border-radius: var(--radius-md);
    padding: 20px;
    margin: 10px 0;
    text-align: center;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-sm);
}
#dailyDoneBanner.hidden { display: none; }
#dailyDoneBanner h3 { margin: 0 0 10px; font-size: 18px; color: var(--fg); }
#dailyDoneBanner p { margin: 6px 0; color: var(--fg-muted); }
#dailyDoneBanner button {
    background: var(--accent);
    color: var(--bg-elev);
    border-color: var(--accent);
    margin-top: 10px;
}
#dailyDoneBanner button:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
#dailyCountdown {
    font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
    font-size: 18px;
    color: var(--fg);
}

#endgameActions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 380px;
    align-items: center;
}

#newGameWrap {
    display: flex;
    width: 100%;
    gap: 6px;
}
#newGame {
    background-color: var(--bg-elev);
    color: var(--accent);
    border-color: var(--border);
    flex: 1;
}
#newGame:hover {
    border-color: var(--accent);
    color: var(--accent-hover);
}
#resetGame {
    background-color: var(--bg-elev);
    color: var(--fg-muted);
    border-color: var(--border);
    width: 100%;
}
#resetGame:hover {
    color: var(--fg);
    border-color: var(--border-strong);
}

#difficultyFilter {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    padding: 8px;
    background: var(--bg-elev);
    color: var(--fg);
    min-height: 44px;
    font-family: inherit;
}

#shareButton {
    background-color: var(--accent);
    color: var(--bg-elev);
    border-color: var(--accent);
    width: 100%;
}
#shareButton:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}
#shareButton.hidden { display: none; }

.danger {
    background-color: var(--incorrect);
    color: #fff;
    border-color: var(--incorrect);
}
.danger:hover { filter: brightness(1.08); }

/* ===== Overlays / modals ===== */
.overlay {
    position: fixed;
    inset: 0;
    background-color: var(--overlay-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 20px;
}

.overlay.hidden { display: none; }

.overlay-content {
    background-color: var(--bg-elev);
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 22px clamp(18px, 4vw, 28px);
    border-radius: var(--radius-md);
    max-width: 520px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.overlay-content.narrow {
    max-width: 380px;
}

.modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}
.modal-head h2 {
    margin: 0;
    font-size: 1.25rem;
    letter-spacing: -0.01em;
    color: var(--fg);
}

.closeOverlay {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--fg-muted);
    border-radius: 999px;
    width: 32px;
    height: 32px;
    padding: 0;
    box-shadow: none;
    line-height: 1;
    font-size: 20px;
    min-height: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.closeOverlay:hover {
    color: var(--fg);
    border-color: var(--border-strong);
    background: var(--bg);
}

.overlay-content h2 {
    margin-top: 0;
    color: var(--fg);
}

.overlay-content ol, .overlay-content ul {
    margin-left: 0;
    padding-left: 20px;
    color: var(--fg);
}
.overlay-content li { margin-bottom: 4px; line-height: 1.5; }
.overlay-content p { color: var(--fg); line-height: 1.5; }

.overlay-content kbd {
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 6px;
    font-family: var(--font-mono, monospace);
    font-size: 13px;
    background: var(--bg);
    color: var(--fg-muted);
}

.mode-instructions {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    margin: 10px 0;
}
.mode-instructions strong { display: block; margin-bottom: 4px; color: var(--fg); }

/* Settings rows */
.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.settings-row:last-child { border-bottom: none; }
.settings-row label { color: var(--fg); }

.settings-row input[type="checkbox"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    accent-color: var(--accent);
}

/* Stats screen */
#statsContent .stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.stat-tile {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: var(--radius-sm);
    text-align: center;
}

.stat-tile .label {
    font-size: 12px;
    color: var(--fg-subtle);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-tile .value {
    font-size: 28px;
    font-weight: 700;
    margin-top: 4px;
    color: var(--fg);
}

.stat-section {
    margin-top: 16px;
}

.stat-section h3 {
    font-size: 13px;
    text-transform: uppercase;
    color: var(--fg-subtle);
    margin: 8px 0;
    letter-spacing: 0.5px;
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0;
    font-size: 14px;
    color: var(--fg);
}

.bar-row .bar-label {
    width: 80px;
    text-align: right;
    color: var(--fg-muted);
}

.bar-row .bar-track {
    flex: 1;
    height: 18px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.bar-row .bar-fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    color: white;
    font-size: 12px;
    padding-right: 6px;
    min-width: 1.5em;
}

.bar-row.easy .bar-fill { background: var(--easy-bg); }
.bar-row.medium .bar-fill { background: var(--medium-bg); }
.bar-row.hard .bar-fill { background: var(--hard-bg); }

.confirm-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 16px;
}

.confirm-actions button {
    min-width: 100px;
}
#confirmNo {
    background: var(--bg-elev);
    color: var(--fg-muted);
    border-color: var(--border);
}
#confirmNo:hover {
    color: var(--fg);
    border-color: var(--border-strong);
}

/* ===== Win animations ===== */
#grid.win {
    animation: winPulse 0.6s ease;
}

@keyframes winPulse {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.04); }
    100% { transform: scale(1); }
}

#grid.win .cell.droppable {
    animation: winFlash 1s ease;
}

@keyframes winFlash {
    0% { background-color: var(--bg-elev); }
    50% { background-color: var(--correct); }
    100% { background-color: var(--correct-fade); }
}

#confettiCanvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
}

/* ===== Picked-up tile (keyboard mode) ===== */
.tile.picked-up::after {
    content: "↑";
    position: absolute;
    top: -10px;
    right: -8px;
    background: var(--accent);
    color: var(--bg-elev);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Footer ===== */
.footer {
    padding: 16px clamp(14px, 4vw, 24px);
    color: var(--fg-subtle);
    font-size: 0.85rem;
    text-align: center;
    border-top: 1px solid var(--border);
    background: var(--bg-elev);
    margin-top: auto;
}
.footer p { margin: 0; }
.footer a { color: var(--fg-muted); }
.footer a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 480px) {
    #grid { max-width: 340px; }
    /* Tighten the unplaced-tiles area on phones — the desktop 130px
       min-height reserves an empty band that pushes the "Check
       Answers" button near the bottom of the visible viewport. The
       area still expands naturally as tiles flow in. */
    #tiles { max-width: 340px; min-height: 60px; padding: 8px 4px; }
    .tile { font-size: 14px; padding: 5px 8px; }
    #grid .cell { font-size: 13px; min-height: 44px; }
    .brand-text { font-size: 14px; }
    .topbar { padding: 10px 12px; gap: 8px; }
}

.hidden { display: none !important; }

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
    }
    #grid.win,
    #grid.win .cell.droppable,
    .tile.just-placed {
        animation: none !important;
    }
    #confettiCanvas { display: none !important; }
}