:root {
    --bg: #0d0d0d;
    --panel: #0f0f0f;
    --border: #1f1f1f;

    --text: #d9fbff;
    --muted: #7fb9c6;

    --accent: #03d8f3;

    --right: #00ff00;
    --near: #fcee0c;

    --wrong-border: #282828;
    --wrong-text: #5f5f5f;

    --error: #ff3860;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    background:
        radial-gradient(
            circle at top,
            rgba(3, 216, 243, 0.08),
            transparent 28%
        ),
        linear-gradient(
            180deg,
            #101010 0%,
            var(--bg) 35%,
            #050505 100%
        );
    color: var(--text);
    font-family: "Fira Code", "Courier New", monospace;
    display: flex;
    justify-content: center;
    padding: 18px;
}

/* Subtile Scanlines für Cyberpunk-Vibe */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.02) 0px,
        rgba(255, 255, 255, 0.02) 1px,
        transparent 2px,
        transparent 4px
    );
    opacity: 0.22;
    z-index: 0;
}

.terminal {
    position: relative;
    z-index: 1;
    width: min(100%, 380px);
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px;
    border-radius: 14px;
    border: 1px solid rgba(3, 216, 243, 0.25);
    background: rgba(0, 0, 0, 0.6);
    box-shadow:
        0 0 30px rgba(3, 216, 243, 0.08),
        inset 0 0 20px rgba(3, 216, 243, 0.03);
}

.header {
    text-align: center;
    position: relative;
}



.subtitle {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.badge {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    vertical-align: middle;
    margin-left: 4px;
}

.badge-unique {
    color: var(--right);
    border: 1px solid rgba(0, 255, 0, 0.3);
    background: rgba(0, 255, 0, 0.08);
}

.badge-repeat {
    color: var(--near);
    border: 1px solid rgba(252, 238, 12, 0.3);
    background: rgba(252, 238, 12, 0.08);
}

.status {
    min-height: 1.3em;
    padding: 10px 12px;
    border-radius: 10px;
    text-align: center;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px dashed rgba(3, 216, 243, 0.22);
    background: rgba(3, 216, 243, 0.04);
    word-break: break-word;
}

.status.error {
    color: var(--error);
    border-color: rgba(255, 56, 96, 0.35);
    background: rgba(255, 56, 96, 0.06);
}

.hint-info {
    text-align: center;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--near);
    border: 1px dashed rgba(252, 238, 12, 0.2);
    background: rgba(252, 238, 12, 0.04);
    padding: 6px 10px;
    border-radius: 8px;
    word-break: break-word;
}

.hint-info.hidden {
    display: none;
}

.hint-hard,
.hint-crazy {
    color: var(--near);
    border-color: rgba(252, 238, 12, 0.2);
    background: rgba(252, 238, 12, 0.04);
}

.hint-hard.hidden,
.hint-crazy.hidden {
    display: none;
}

.board {
    display: grid;
    gap: 8px;
}

.row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.cells-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    flex: 1;
}

.row.invalid {
    animation: shake 0.4s ease;
}

.cell {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #080808;
    color: var(--accent);
    font-size: clamp(1.2rem, 5vw, 1.6rem);
    font-weight: 600;
    box-shadow: inset 0 0 8px rgba(255, 255, 255, 0.015);
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease,
        background 0.15s ease;
}

.cell.filled {
    border-color: rgba(3, 216, 243, 0.55);
    box-shadow:
        0 0 8px rgba(3, 216, 243, 0.15),
        inset 0 0 6px rgba(3, 216, 243, 0.06);
}

.cell.reveal {
    animation: reveal-pop 0.2s ease-out both;
}

.cell.right {
    border-color: var(--right);
    color: var(--right);
    background: rgba(0, 255, 0, 0.06);
    box-shadow:
        0 0 12px rgba(0, 255, 0, 0.2),
        inset 0 0 10px rgba(0, 255, 0, 0.08);
    text-shadow: 0 0 8px rgba(0, 255, 0, 0.4);
}

.cell.revealed-right {
    border-color: var(--right);
    color: var(--right);
    background: rgba(0, 255, 0, 0.06);
    box-shadow:
        0 0 12px rgba(0, 255, 0, 0.2),
        inset 0 0 10px rgba(0, 255, 0, 0.08);
    text-shadow: 0 0 8px rgba(0, 255, 0, 0.4);
    opacity: 0.85;
    pointer-events: none;
}

.cell.revealed-near {
    border-color: var(--near);
    color: var(--near);
    background: rgba(252, 238, 12, 0.05);
    box-shadow:
        0 0 12px rgba(252, 238, 12, 0.18),
        inset 0 0 10px rgba(252, 238, 12, 0.06);
    text-shadow: 0 0 8px rgba(252, 238, 12, 0.35);
    opacity: 0.85;
    pointer-events: none;
}

.cell.dimmed {
    opacity: 0.5;
    filter: grayscale(100%);
    color: var(--wrong-text);
}

.cell.surrendered {
    background: rgba(220, 40, 40, 0.08);
    color: rgba(220, 40, 40, 0.7);
    border-color: rgba(220, 40, 40, 0.3);
    font-style: italic;
}

.solution-row {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed rgba(220, 40, 40, 0.3);
}

.cell.auto-filled {
    border-color: var(--right);
    color: var(--right);
    opacity: 0.85;
}

.cell.near {
    border-color: var(--near);
    color: var(--near);
    background: rgba(252, 238, 12, 0.05);
    box-shadow:
        0 0 12px rgba(252, 238, 12, 0.18),
        inset 0 0 10px rgba(252, 238, 12, 0.06);
    text-shadow: 0 0 8px rgba(252, 238, 12, 0.35);
}

.cell.wrong {
    border-color: var(--wrong-border);
    color: var(--wrong-text);
    background: #101010;
    box-shadow: none;
    text-shadow: none;
}

.dice-dots {
    display: grid;
    grid-template-columns: repeat(3, 10px);
    grid-template-rows: repeat(3, 10px);
    gap: 3px;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
}

.dice-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #282828;
    border: 1px solid #3a3a3a;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.dice-dot.right {
    background: var(--right);
    border-color: var(--right);
    box-shadow: 0 0 6px rgba(0, 255, 0, 0.4);
}

.dice-dot.near {
    background: var(--near);
    border-color: var(--near);
    box-shadow: 0 0 6px rgba(252, 238, 12, 0.4);
}

.keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.key {
    padding: 14px 0;
    border-radius: 12px;
    border: 1px solid rgba(3, 216, 243, 0.25);
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.04),
        rgba(255, 255, 255, 0.01)
    );
    color: var(--text);
    font-family: inherit;
    font-size: 1.1rem;
    cursor: pointer;
    user-select: none;
    touch-action: manipulation;
    transition:
        transform 0.15s ease,
        box-shadow 0.15s ease,
        border-color 0.15s ease;
}

.key:hover {
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(3, 216, 243, 0.2);
    transform: translateY(-1px);
}

.key:active {
    transform: translateY(0) scale(0.98);
}

.key:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.key-focused {
    border-color: var(--accent) !important;
    box-shadow: 0 0 16px rgba(3, 216, 243, 0.35), inset 0 0 8px rgba(3, 216, 243, 0.1) !important;
    transform: translateY(-1px);
}

.key:disabled,
.key.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    background: #1a1a1a;
    border-color: #333;
    color: #666;
}

.key.action {
    color: var(--accent);
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.keypad button.wrong-digit {
    opacity: 0.5;
    pointer-events: none;
    filter: grayscale(100%);
    background: #1a1a1a;
    border-color: #333;
    color: #666;
}

.difficulty {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.diff-btn {
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid rgba(3, 216, 243, 0.25);
    background: rgba(3, 216, 243, 0.04);
    color: var(--muted);
    font-family: inherit;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.15s ease;
}

.diff-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.diff-btn.active {
    border-color: var(--accent);
    background: rgba(3, 216, 243, 0.12);
    color: var(--accent);
    box-shadow: 0 0 8px rgba(3, 216, 243, 0.2);
}

.hint-btn {
    padding: 4px 10px;
    border-radius: 8px;
    border: 1px solid rgba(252, 238, 12, 0.25);
    background: rgba(252, 238, 12, 0.06);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    transition: all 0.15s ease;
    margin-left: 6px;
}

.hint-btn:hover {
    border-color: rgba(252, 238, 12, 0.6);
    box-shadow: 0 0 10px rgba(252, 238, 12, 0.15);
    transform: translateY(-1px);
}

.hint-btn:active {
    transform: translateY(0) scale(0.95);
}

.legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 0.72rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 4px;
    border: 1px solid;
    display: inline-block;
}

.dot.right {
    border-color: var(--right);
    background: rgba(0, 255, 0, 0.15);
    box-shadow: 0 0 8px rgba(0, 255, 0, 0.25);
}

.dot.near {
    border-color: var(--near);
    background: rgba(252, 238, 12, 0.12);
    box-shadow: 0 0 8px rgba(252, 238, 12, 0.22);
}

.dot.wrong {
    border-color: #333;
    background: #1a1a1a;
}

.header-row {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-row h1 {
    margin: 0;
    font-size: clamp(1.5rem, 6vw, 2rem);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    text-shadow:
        0 0 6px rgba(3, 216, 243, 0.6),
        0 0 18px rgba(3, 216, 243, 0.25);
}

.menu-btn {
    background: none;
    border: 1px solid rgba(3, 216, 243, 0.2);
    border-radius: 8px;
    color: var(--muted);
    font-size: 1.3rem;
    line-height: 1;
    padding: 4px 8px;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
    font-family: inherit;
}

.menu-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 10px rgba(3, 216, 243, 0.15);
}

.menu-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.menu-wrap {
    position: relative;
    margin-left: auto;
}

.menu-popover {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 20;
    min-width: 210px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: #0a0f11;
    border: 1px solid rgba(3, 216, 243, 0.2);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
    padding: 6px;
    opacity: 1;
    visibility: visible;
    will-change: opacity, visibility;
    transition: opacity 0.12s ease-out, visibility 0.12s ease-out;
    transform-origin: top right;
}

.menu-popover.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.popover-arrow {
    position: absolute;
    top: -6px;
    right: 12px;
    width: 10px;
    height: 10px;
    background: #0a0f11;
    border-left: 1px solid rgba(3, 216, 243, 0.2);
    border-top: 1px solid rgba(3, 216, 243, 0.2);
    transform: rotate(45deg);
}

.popover-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.12s ease;
    text-align: left;
    letter-spacing: 0.04em;
}

.popover-item:hover {
    background: rgba(3, 216, 243, 0.08);
}

.popover-item:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

#surrenderBtn {
    color: var(--error);
}

#surrenderBtn:hover {
    background: rgba(255, 56, 96, 0.1);
}

.popover-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.popover-divider {
    height: 1px;
    background: rgba(3, 216, 243, 0.12);
    margin: 4px 8px;
}

.popover-sub {
    padding: 8px 4px 0;
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.5;
}

.popover-sub h3 {
    color: var(--accent);
    font-size: 0.88rem;
    margin: 0 0 8px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.popover-sub p {
    margin: 0 0 6px;
}

.popover-sub .stat-row {
    display: flex;
    justify-content: space-between;
    padding: 3px 0;
}

.popover-sub .stat-value {
    color: var(--text);
    font-weight: 600;
}

.overlay {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(2px);
    opacity: 1;
    visibility: visible;
    will-change: opacity;
    transition: opacity 0.15s ease-out, visibility 0.15s ease-out;
}

.overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.modal {
    width: min(100%, 360px);
    padding: 28px 22px;
    border-radius: 16px;
    text-align: center;
    background: #0a0f11;
    border: 1px solid var(--accent);
    box-shadow: 0 0 35px rgba(3, 216, 243, 0.2);
    transform: scale(1) translateY(0);
    opacity: 1;
    will-change: transform, opacity;
    transition: transform 0.15s cubic-bezier(0.25, 0.1, 0.25, 1), opacity 0.15s ease-out;
}

.overlay.hidden .modal {
    transform: scale(0.95) translateY(10px);
    opacity: 0;
}

.modal h2 {
    margin: 0 0 10px;
    font-size: 1.5rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.modal p {
    margin: 0;
    color: #a6b7bf;
    line-height: 1.5;
    font-size: 0.9rem;
}

.overlay.granted .modal {
    border-color: var(--right);
    box-shadow: 0 0 35px rgba(0, 255, 0, 0.25);
}

.overlay.granted .modal h2 {
    color: var(--right);
    text-shadow:
        0 0 10px rgba(0, 255, 0, 0.7),
        0 0 25px rgba(0, 255, 0, 0.35);
}

.overlay.locked .modal {
    border-color: var(--error);
    box-shadow: 0 0 35px rgba(255, 56, 96, 0.25);
}

.overlay.locked .modal h2 {
    color: var(--error);
    text-shadow:
        0 0 10px rgba(255, 56, 96, 0.7),
        0 0 25px rgba(255, 56, 96, 0.35);
}

@keyframes reveal-pop {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    60% {
        transform: scale(1.04);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes shake {
    0%,
    100% {
        transform: translateX(0);
    }
    20% {
        transform: translateX(-7px);
    }
    40% {
        transform: translateX(7px);
    }
    60% {
        transform: translateX(-5px);
    }
    80% {
        transform: translateX(5px);
    }
}

/* ───── Cursor ───── */

.cell-selected {
    border-color: var(--accent) !important;
    box-shadow:
        0 0 12px rgba(3, 216, 243, 0.3),
        inset 0 0 8px rgba(3, 216, 243, 0.08) !important;
    animation: cursor-pulse 1.2s ease-in-out infinite;
}

@keyframes cursor-pulse {
    0%, 100% { border-color: var(--accent); }
    50% { border-color: rgba(3, 216, 243, 0.35); }
}

/* ───── Share Button ───── */

.share-btn {
    padding: 10px 24px;
    border: 1px solid var(--accent);
    border-radius: 10px;
    background: rgba(3, 216, 243, 0.08);
    color: var(--accent);
    font-family: inherit;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: all 0.15s ease;
}

.share-btn:hover {
    background: rgba(3, 216, 243, 0.18);
    box-shadow: 0 0 12px rgba(3, 216, 243, 0.2);
}

.share-btn.copied {
    border-color: var(--right);
    color: var(--right);
    background: rgba(0, 255, 0, 0.08);
    cursor: default;
}

.overlay-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 16px;
}

.cancel-btn {
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--muted);
    font-family: inherit;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: all 0.15s ease;
}

.cancel-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
}

/* ───── Hint ───── */

.overlay.hint .modal {
    border-color: var(--near);
    box-shadow: 0 0 35px rgba(252, 238, 12, 0.25);
}

.overlay.hint .modal h2 {
    color: var(--near);
    text-shadow:
        0 0 10px rgba(252, 238, 12, 0.7),
        0 0 25px rgba(252, 238, 12, 0.35);
}

/* ───── Tutorial ───── */

.overlay.tutorial .modal {
    max-width: 380px;
}

.overlay.tutorial #overlay-title,
.overlay.tutorial #overlay-text,
.overlay.tutorial #overlay-extra {
    will-change: opacity;
    transition: opacity 0.1s ease-out;
}

.overlay.tutorial .modal p {
    white-space: pre-line;
    line-height: 1.7;
}

.overlay.tutorial .modal h2 {
    color: var(--accent);
    text-shadow: 0 0 10px rgba(3, 216, 243, 0.5);
}

.tutorial-nav {
    margin-top: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.tutorial-dots {
    display: flex;
    gap: 6px;
}

.tutorial-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(3, 216, 243, 0.2);
    transition: background 0.2s ease;
}

.tutorial-dot.active {
    background: var(--accent);
    box-shadow: 0 0 6px rgba(3, 216, 243, 0.5);
}

.tutorial-btn {
    padding: 8px 28px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: rgba(3, 216, 243, 0.1);
    color: var(--accent);
    font-family: inherit;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: all 0.15s ease;
}

.tutorial-btn:hover {
    background: rgba(3, 216, 243, 0.2);
    box-shadow: 0 0 10px rgba(3, 216, 243, 0.2);
}

/* ───── History ───── */

.history-date-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 260px;
    overflow-y: auto;
}

.history-date-btn {
    display: block;
    width: 100%;
    padding: 8px 10px;
    border: 1px solid rgba(3, 216, 243, 0.12);
    border-radius: 8px;
    background: rgba(3, 216, 243, 0.03);
    color: var(--text);
    font-family: inherit;
    font-size: 0.82rem;
    cursor: pointer;
    text-align: left;
    letter-spacing: 0.04em;
    transition: all 0.12s ease;
}

.history-date-btn:hover {
    border-color: rgba(3, 216, 243, 0.3);
    background: rgba(3, 216, 243, 0.08);
}

.history-date-btn.active {
    border-color: var(--accent);
    background: rgba(3, 216, 243, 0.12);
    color: var(--accent);
}

.history-item {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(3, 216, 243, 0.06);
}

.history-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.history-meta {
    font-size: 0.75rem;
    color: var(--muted);
    margin-bottom: 4px;
    letter-spacing: 0.04em;
}

.history-line {
    font-size: 0.85rem;
    letter-spacing: 2px;
    line-height: 1.4;
}

@media (max-width: 380px) {
    .terminal {
        padding: 14px;
    }

    .key {
        padding: 12px 0;
    }
}