/* ==========================================================================
   SumGrid Stylesheet
   Designsystem für Cortex mit variablen Themes, Glow-Effekten & Feedback
   ========================================================================== */

.has-sumgrid {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.sumgrid-board {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 6px;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.sumgrid-matrix {
    display: grid;
    gap: 6px;
    width: 100%;
    max-width: 460px;
    margin: 0 auto;
    box-sizing: border-box;
}

/* 1. Ziffernkacheln */
.sumgrid-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card, #1e293b);
    border: 2px solid var(--border-color, rgba(255, 255, 255, 0.12));
    border-radius: 8px;
    font-size: clamp(16px, 4.5vw, 24px);
    font-weight: 800;
    color: var(--text-primary, #f8f9fa);
    cursor: pointer;
    position: relative;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.sumgrid-cell:hover {
    border-color: var(--accent-sun, #f59e0b);
    transform: translateY(-1px);
}

.sumgrid-cell:active {
    transform: scale(0.96);
}

.sumgrid-cell.selected {
    outline: 2px solid var(--accent-sun, #f59e0b);
    outline-offset: 2px;
}

/* Kachel-Zustände */
.sumgrid-cell.cell-neutral {
    background: var(--bg-card, #1e293b);
    color: var(--text-primary, #f8f9fa);
}

/* Ziffer gehört zur Summe (KEEP) */
.sumgrid-cell.cell-keep {
    background: rgba(34, 197, 94, 0.18);
    border-color: #22c55e;
    color: #22c55e;
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.3);
    font-weight: 900;
}

/* Ziffer gestrichen (CROSS) */
.sumgrid-cell.cell-cross {
    background: rgba(15, 23, 42, 0.5);
    border-color: rgba(255, 255, 255, 0.05);
    color: var(--text-muted, #64748b);
    opacity: 0.45;
}

.sumgrid-cell.cell-cross::after {
    content: '';
    position: absolute;
    width: 65%;
    height: 2.5px;
    background: #ef4444;
    border-radius: 2px;
    transform: rotate(-45deg);
    pointer-events: none;
    box-shadow: 0 0 4px rgba(239, 68, 68, 0.5);
}

.sumgrid-cell.locked {
    cursor: default;
    opacity: 0.85;
}

.sumgrid-cell.hint-shimmer {
    animation: sumgridHintPulse 1.2s infinite ease-in-out;
}

@keyframes sumgridHintPulse {
    0%, 100% {
        box-shadow: 0 0 4px #eab308;
        border-color: #eab308;
    }
    50% {
        box-shadow: 0 0 16px #eab308;
        border-color: #fde047;
    }
}

/* Notiz-Punkt */
.cell-note-dot {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-sun, #f59e0b);
}

/* 2. Zielsummen-Badges an Rändern */
.sumgrid-target {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: clamp(13px, 3.8vw, 18px);
    font-weight: 900;
    border-radius: 6px;
    padding: 2px 6px;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.sumgrid-target.row-target {
    min-width: 38px;
    border-left: 2px solid var(--border-color, rgba(255, 255, 255, 0.15));
}

.sumgrid-target.col-target {
    min-height: 34px;
    border-top: 2px solid var(--border-color, rgba(255, 255, 255, 0.15));
}

/* Ziel ausstehend */
.sumgrid-target.target-pending {
    background: var(--bg-primary, rgba(0, 0, 0, 0.2));
    color: var(--text-secondary, #94a3b8);
}

/* Ziel erfüllt (Grün mit Häkchen) */
.sumgrid-target.target-satisfied {
    background: rgba(34, 197, 94, 0.22);
    border-color: #22c55e !important;
    color: #4ade80;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.35);
}

.target-status-icon {
    font-size: 0.85em;
    font-weight: 900;
}

/* Ziel überschritten (Rot mit Warnung) */
.sumgrid-target.target-exceeded {
    background: rgba(239, 68, 68, 0.25);
    border-color: #ef4444 !important;
    color: #f87171;
    animation: sumgridTargetShake 0.3s ease;
}

@keyframes sumgridTargetShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

/* 3. Ecke unten-rechts */
.sumgrid-corner {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(14px, 4vw, 20px);
    opacity: 0.6;
}

/* 4. Keypad */
.sumgrid-keypad {
    display: flex;
    gap: 8px;
    justify-content: center;
    width: 100%;
    max-width: 360px;
    margin: 8px auto 0;
}

.sumgrid-key-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 8px;
    background: var(--bg-card, #1e293b);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    border-radius: var(--radius-sm, 8px);
    color: var(--text-primary, #f8f9fa);
    cursor: pointer;
    transition: all 0.15s ease;
}

.sumgrid-key-btn:hover {
    border-color: var(--accent-sun, #f59e0b);
    transform: translateY(-1px);
}

.sumgrid-key-btn .key-icon {
    font-size: 1.2rem;
}

.sumgrid-key-btn .key-label {
    font-size: 0.75rem;
    font-weight: 700;
}

.sumgrid-key-btn.key-keep:hover {
    border-color: #22c55e;
    color: #4ade80;
}

.sumgrid-key-btn.key-cross:hover {
    border-color: #ef4444;
    color: #f87171;
}