/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — buttons, chips, keys, overlays, result cards,
   inputs, game chrome shared across pages
   ═══════════════════════════════════════════════════════════════ */

/* ── Buttons ── */
.btn {
    display: inline-block;
    padding: 14px 38px;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all 0.18s ease;
    outline: none;
    position: relative;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 0 var(--accent-deep), 0 6px 14px rgba(255, 107, 138, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 5px 0 var(--accent-deep), 0 8px 20px rgba(255, 107, 138, 0.35);
}

.btn-primary:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 var(--accent-deep), 0 3px 8px rgba(255, 107, 138, 0.25);
}

.btn-primary:disabled {
    background: var(--ctrl-disabled-bg);
    box-shadow: 0 4px 0 var(--ctrl-disabled-shadow), 0 6px 14px rgba(180, 160, 140, 0.2);
    cursor: default;
    pointer-events: none;
    color: #a8988c;
}

.btn-secondary {
    background: var(--btn2-bg);
    color: var(--btn2-color);
    padding: 12px 32px;
    font-size: 0.95rem;
    box-shadow: 0 3px 0 var(--btn2-shadow);
}

.btn-secondary:hover {
    background: var(--btn2-hover-bg);
    color: var(--btn2-hover-color);
    box-shadow: 0 4px 0 var(--btn2-hover-shadow);
    transform: translateY(-1px);
}

.btn-secondary:active {
    transform: translateY(1px);
    box-shadow: 0 1px 0 var(--btn2-shadow);
}

/* ── Chip buttons (operation/size selectors) ── */
.chip-row {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 10px 18px;
    font-size: 0.95rem;
    font-weight: 700;
    border: 2px solid var(--ctrl-border);
    border-radius: var(--radius-full);
    background: var(--ctrl-bg);
    color: var(--text);
    cursor: pointer;
    transition: all 0.18s ease;
    user-select: none;
    outline: none;
    box-shadow: 0 3px 0 var(--ctrl-shadow);
}

.chip:hover {
    background: var(--ctrl-hover-bg);
    border-color: var(--ctrl-hover-border);
    transform: translateY(-1px);
    box-shadow: 0 4px 0 var(--ctrl-hover-shadow);
}

.chip:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 var(--ctrl-shadow);
}

.chip.on {
    border-color: var(--ctrl-on-border);
    background: var(--ctrl-on-bg);
    color: var(--ctrl-on-color);
    box-shadow: 0 3px 0 var(--ctrl-shadow);
}

.chip.on:hover {
    filter: brightness(0.95);
    box-shadow: 0 4px 0 var(--ctrl-hover-shadow);
}

/* ── Stepper ── */
.stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.step-btn {
    width: 48px;
    height: 48px;
    font-size: 1.3rem;
    font-weight: 800;
    border: 2px solid var(--ctrl-border);
    border-radius: 50%;
    background: var(--ctrl-bg);
    color: var(--accent);
    cursor: pointer;
    transition: all 0.18s ease;
    user-select: none;
    outline: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 0 var(--ctrl-shadow);
}

.step-btn:hover {
    background: var(--ctrl-hover-bg);
    border-color: var(--ctrl-hover-border);
    transform: translateY(-1px);
    box-shadow: 0 4px 0 var(--ctrl-hover-shadow);
}

.step-btn:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 var(--ctrl-shadow);
}

.stepper .val {
    font-size: 2.4rem;
    font-weight: 800;
    min-width: 48px;
    color: var(--accent);
}

/* ── Settings labels ── */
.settings-section {
    margin-bottom: 20px;
}

.settings-label,
.setup-phase label {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

/* ── Word input ── */
.word-input {
    width: 100%;
    padding: 16px 12px;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 8px;
    text-align: center;
    border: 3px dashed #d8cce8;
    border-radius: var(--radius-md);
    background: #fdfaff;
    color: var(--text);
    outline: none;
    transition: border-color 0.25s ease, background 0.25s ease;
    margin-bottom: 18px;
}

.word-input:focus {
    border-color: var(--accent);
    border-style: solid;
    background: #fff;
}

.word-input::placeholder {
    color: #d0c8d8;
    letter-spacing: 2px;
    font-size: 1rem;
    font-weight: 400;
}

/* ── Keyboard keys ── */
.keyboard {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 5px;
    margin-bottom: 16px;
}

.key {
    width: var(--key-size);
    height: var(--key-size);
    min-width: var(--key-size);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    border: 2px solid var(--ctrl-border);
    border-radius: var(--radius-sm);
    background: var(--ctrl-bg);
    color: var(--text);
    cursor: pointer;
    transition: all 0.12s ease;
    line-height: var(--key-size);
    text-align: center;
    user-select: none;
    box-shadow: 0 3px 0 var(--ctrl-shadow);
}

.key:hover:not(.used) {
    background: var(--ctrl-hover-bg);
    border-color: var(--ctrl-hover-border);
    transform: translateY(-2px);
    box-shadow: 0 5px 0 var(--ctrl-hover-shadow);
}

.key:active:not(.used) {
    transform: translateY(2px);
    box-shadow: 0 1px 0 var(--ctrl-shadow);
}

.key.used {
    opacity: 0.45;
    cursor: default;
    pointer-events: none;
    transform: none;
    box-shadow: none;
}

.key.correct {
    background: var(--green-soft);
    border-color: var(--green);
    color: #3a9e50;
    box-shadow: 0 3px 0 #b0e8be;
}

.key.wrong {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 3px 0 #f7c8d4;
}

.key-backspace {
    font-size: 1.05rem;
}

/* ── Answer buttons (Number Grove) ── */
.ans-btn {
    padding: 18px 14px;
    font-size: 1.5rem;
    font-weight: 800;
    border: 3px solid var(--ctrl-border);
    border-radius: var(--radius-md);
    background: var(--ctrl-bg);
    color: var(--text);
    cursor: pointer;
    transition: all 0.12s ease;
    user-select: none;
    outline: none;
    box-shadow: 0 4px 0 var(--ctrl-shadow);
}

.ans-btn:hover:not(:disabled) {
    background: var(--ctrl-hover-bg);
    border-color: var(--ctrl-hover-border);
    transform: translateY(-2px);
    box-shadow: 0 6px 0 var(--ctrl-hover-shadow);
}

.ans-btn:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: 0 2px 0 var(--ctrl-shadow);
}

.ans-btn:disabled {
    cursor: default;
    pointer-events: none;
}

.ans-btn.correct,
.ans-btn.reveal-correct {
    background: var(--green-soft);
    border-color: var(--green);
    color: #2a8a55;
    box-shadow: 0 3px 0 #b0e8c4;
    transform: none;
}

.ans-btn.wrong {
    background: var(--red-soft);
    border-color: var(--red);
    color: #c0392b;
    box-shadow: 0 3px 0 #e8b8b8;
    transform: none;
}

/* ── Home button ── */
.home-btn {
    background: none;
    border: 2px solid var(--home-border);
    border-radius: var(--radius-full);
    padding: 6px 18px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.18s ease;
    outline: none;
    box-shadow: 0 3px 0 var(--home-shadow);
}

.home-btn:hover {
    background: var(--home-hover-bg);
    border-color: var(--home-hover-border);
    transform: translateY(-1px);
    box-shadow: 0 4px 0 var(--home-hover-shadow);
    color: var(--home-hover-color);
}

.home-btn:active {
    transform: translateY(1px);
    box-shadow: 0 1px 0 var(--home-shadow);
}

/* ── Test button (dev) ── */
.test-btn {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    border: 2px dashed var(--home-border);
    border-radius: var(--radius-full);
    padding: 4px 12px;
    font-size: 0.8rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.18s ease;
    outline: none;
}

.test-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--home-hover-border);
    color: var(--home-hover-color);
}

/* ── Result overlay ── */
.result-overlay {
    position: fixed;
    inset: 0;
    background: rgba(90, 74, 58, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.result-card {
    background: var(--card);
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px 32px;
    text-align: center;
    max-width: 340px;
    width: 90vw;
    box-shadow:
        0 8px 40px rgba(100, 80, 120, 0.2),
        0 0 0 8px rgba(255, 255, 255, 0.45);
    animation: popIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
    from {
        transform: scale(0.5) rotate(-4deg);
        opacity: 0;
    }
    to {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.result-emoji {
    font-size: 4rem;
    margin-bottom: 10px;
    line-height: 1;
}

.result-msg {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.result-msg.win {
    color: var(--green);
}

.result-msg.lose {
    color: var(--accent);
}

/* ── Result answer boxes (Number Grove) ── */
.result-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.result-buttons .btn {
    flex: 1;
    text-align: center;
}

.result-equation {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    margin: 12px 0 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 4px;
}

.result-answer-box {
    display: inline-block;
    padding: 8px 20px;
    font-size: 1.5rem;
    font-weight: 800;
    border: 3px solid;
    border-radius: 14px;
    min-width: 48px;
    text-align: center;
}

.result-answer-box.correct-box {
    background: var(--green-soft);
    border-color: var(--green);
    color: #2a8a55;
}

.result-answer-box.wrong-box {
    background: var(--red-soft);
    border-color: var(--red);
    color: #c0392b;
}

.result-answer-info {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
}

/* ── Game phase (shared show/hide) ── */
.game-phase {
    display: none;
}

/* ── Wrong count (Word Bloom) ── */
.wrong-count {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.wrong-count span {
    color: var(--accent);
    font-size: 1.1rem;
}