/* ─────────────────────────────────────────────────────────────────────────────
 *  sudoku/style.css
 *  Imports shared tokens, fonts, modals, buttons, leaderboard from shared.css
 * ───────────────────────────────────────────────────────────────────────── */
@import url('../shared.css');

/* ─── START LOGO ─────────────────────────────────────────────────── */
#start-logo {
    font-size: 4.5rem;
    margin-bottom: 8px;
    animation: logoEntrance 0.75s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    filter: drop-shadow(0 0 24px rgba(74, 222, 128, 0.55));
}
@keyframes logoEntrance {
    0%   { transform: scale(4); opacity: 0; }
    35%  { opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* ─── GAME AREA ──────────────────────────────────────────────────── */
#game-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 8px 6px;
    overflow: hidden;
}

/* ─── SUDOKU GRID ────────────────────────────────────────────────── */
#sudoku-grid {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    width: min(calc(100vw - 24px), 420px);
    aspect-ratio: 1 / 1;
    border: 2px solid #64748b;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(74, 222, 128, 0.08);
}

.cell {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Courier Prime', monospace;
    font-size: clamp(0.9rem, 4vw, 1.4rem);
    font-weight: bold;
    cursor: pointer;
    border-right: 1px solid #1e293b;
    border-bottom: 1px solid #1e293b;
    background: #050810;
    color: #e2e8f0;
    transition: background 0.08s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    position: relative;
}

/* Right edge cells — no right border */
.cell:nth-child(9n) { border-right: none; }
/* Bottom row cells — no bottom border */
.cell:nth-child(n+73) { border-bottom: none; }

/* Thick box dividers — right side (after col 3, col 6) */
.cell[data-c="2"] { border-right: 2px solid #475569; }
.cell[data-c="5"] { border-right: 2px solid #475569; }

/* Thick box dividers — bottom (after row 3, row 6) */
.cell[data-r="2"] { border-bottom: 2px solid #475569; }
.cell[data-r="5"] { border-bottom: 2px solid #475569; }

/* ─── CELL STATES ────────────────────────────────────────────────── */
.cell.given {
    color: #e2e8f0;
    cursor: default;
    font-weight: 700;
}

.cell.user-correct {
    color: var(--accent);
}

.cell.wrong {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.12);
    animation: wrongFlash 0.4s ease-out;
}

@keyframes wrongFlash {
    0%, 100% { background: rgba(239, 68, 68, 0.12); }
    50%       { background: rgba(239, 68, 68, 0.28); }
}

.cell.selected {
    background: rgba(74, 222, 128, 0.18) !important;
    outline: 2px solid var(--success);
    outline-offset: -2px;
    z-index: 1;
}

.cell.peer {
    background: rgba(255, 255, 255, 0.04);
}

.cell.match {
    background: rgba(74, 222, 128, 0.07);
}

/* Wrong cell doesn't fully override selected glow — keep it readable */
.cell.wrong.selected {
    background: rgba(239, 68, 68, 0.22) !important;
    outline-color: var(--error-color);
}

/* ─── NUMBER PICKER OVERLAY ──────────────────────────────────────── */
#num-picker {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
}

#num-picker.hidden {
    display: none;
}

#num-picker-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
}

#num-picker-card {
    position: relative;
    z-index: 1;
    background: rgba(8, 12, 24, 0.97);
    border: 1px solid #1e293b;
    border-radius: 18px;
    padding: 14px;
    box-shadow: 0 0 40px rgba(74, 222, 128, 0.15), 0 8px 32px rgba(0, 0, 0, 0.7);
    animation: pickerIn 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes pickerIn {
    0%   { transform: scale(0.85); opacity: 0; }
    100% { transform: scale(1);    opacity: 1; }
}

#num-picker-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.num-btn {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid #1e293b;
    border-radius: 12px;
    color: #e2e8f0;
    font-family: 'Courier Prime', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s, border-color 0.1s, transform 0.08s;
    -webkit-tap-highlight-color: transparent;
    margin-top: 0;
    padding: 0;
    letter-spacing: 0;
}

.num-btn:hover {
    background: rgba(74, 222, 128, 0.12);
    border-color: rgba(74, 222, 128, 0.4);
    color: var(--success);
}

.num-btn:active {
    transform: scale(0.9);
}

.erase-btn {
    grid-column: 1 / -1;
    width: 100%;
    height: 44px;
    font-size: 0.85rem;
    letter-spacing: 1px;
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.25);
    color: var(--error-color);
}

.erase-btn:hover {
    background: rgba(239, 68, 68, 0.18);
    border-color: rgba(239, 68, 68, 0.5);
    color: var(--error-color);
}

/* ─── HEADER EXTRAS ──────────────────────────────────────────────── */
#header-mistakes {
    color: var(--error-color);
    font-size: 0.9rem;
}

#header-timer {
    color: var(--accent);
}

/* ─── RESULT — green accent for Sudoku ──────────────────────────── */
#result-time-row.sudoku-score {
    background: rgba(74, 222, 128, 0.08);
    border-color: rgba(74, 222, 128, 0.2);
}

#result-time-row.sudoku-score #result-time-value {
    color: var(--success);
}

/* ─── RULES OVERLAY (reuse code-breaker's pattern) ──────────────── */
#rules-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.94);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3500;
    padding: 20px;
}

#rules-overlay.hidden { display: none; }

#rules-card {
    background: linear-gradient(135deg, #080c18 0%, #0a1020 100%);
    border: 1px solid #1e293b;
    border-radius: 20px;
    padding: 28px 24px 20px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    animation: rulesIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes rulesIn {
    0%   { transform: scale(0.88) translateY(16px); opacity: 0; }
    100% { transform: scale(1)    translateY(0);    opacity: 1; }
}

#rules-icon {
    font-size: 3rem;
    margin-bottom: 6px;
    filter: drop-shadow(0 0 16px rgba(74, 222, 128, 0.4));
}

#rules-level-name {
    font-size: 0.72rem;
    letter-spacing: 3px;
    color: var(--success);
    text-transform: uppercase;
    margin-bottom: 10px;
}

#rules-card h2 {
    font-size: 1.2rem;
    margin: 0 0 14px;
    color: #e2e8f0;
    letter-spacing: 2px;
}

#rules-list {
    text-align: left;
    font-size: 0.82rem;
    color: #64748b;
    line-height: 1.75;
    padding-left: 18px;
    margin: 0 0 18px;
}

#rules-list li + li { margin-top: 6px; }
#rules-list b { color: #94a3b8; }

#rules-start-btn {
    background: var(--success);
    color: #000;
    border-color: var(--success);
    font-weight: 700;
    width: 100%;
    padding: 13px;
    font-size: 1rem;
    animation: startPulse 2s ease-in-out infinite;
}
#rules-start-btn:hover { background: #22c55e; border-color: #22c55e; color: #000; }

@keyframes startPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
    50%       { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0.2); }
}

#rules-back-btn {
    width: 100%;
    margin-top: 8px;
    padding: 10px;
    font-size: 0.85rem;
    color: #334155;
    border-color: #0f172a;
}

/* ─── COUNTDOWN OVERLAY ──────────────────────────────────────────── */
#countdown-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 4000;
}

#countdown-overlay.hidden { display: none; }

#countdown-number {
    font-family: 'Courier Prime', monospace;
    font-size: 9rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 0 40px rgba(74, 222, 128, 0.6);
    line-height: 1;
}

#countdown-number.count-pop {
    animation: countPop 0.55s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#countdown-number.go-text {
    color: var(--success);
    font-size: 6rem;
    text-shadow: 0 0 60px rgba(74, 222, 128, 0.9);
}

@keyframes countPop {
    0%   { transform: scale(1.6); opacity: 0; }
    40%  { opacity: 1; }
    100% { transform: scale(1);   opacity: 1; }
}

/* ─── SHARE BUTTON ───────────────────────────────────────────────── */
button.share-btn {
    background: rgba(74, 222, 128, 0.1);
    border-color: rgba(74, 222, 128, 0.35);
    color: var(--success);
}

button.share-btn:hover {
    background: rgba(74, 222, 128, 0.2);
    border-color: var(--success);
    color: var(--success);
}