@charset "UTF-8";

/* ==========================================
   Sum 10 Puzzle - Dense Heart Board Design
========================================== */

.sum-puzzle-page {
    max-width: 1440px;
    margin: 0 auto;
    padding: 28px 0 64px;
}

.sum-hero {
    text-align: center;
    padding: 36px 20px 30px;
}

.sum-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 15px;
    border-radius: 999px;
    background: #fff1f2;
    color: #e11d48;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.08em;
}

.sum-hero h1 {
    margin: 18px 0 12px;
    color: #0f172a;
    font-size: clamp(36px, 5vw, 58px);
    font-weight: 900;
    letter-spacing: -0.05em;
}

.sum-hero p {
    max-width: 760px;
    margin: 0 auto;
    color: #64748b;
    font-size: 15px;
    line-height: 1.8;
}

.sum-setup-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr auto;
    gap: 14px;
    align-items: end;
    max-width: 1040px;
    margin: 28px auto 0;
    padding: 26px;
    border: 1px solid rgba(244, 63, 94, 0.16);
    border-radius: 26px;
    background: #ffffff;
    box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
    text-align: left;
}

.sum-field label {
    display: block;
    margin-bottom: 8px;
    color: #0f172a;
    font-size: 13px;
    font-weight: 900;
}

.sum-field input,
.sum-field select {
    width: 100%;
    min-height: 50px;
    box-sizing: border-box;
    padding: 0 14px;
    border: 1px solid rgba(244, 63, 94, 0.22);
    border-radius: 15px;
    background: #fff7f8;
    color: #0f172a;
    font-size: 14px;
    font-weight: 800;
}

.sum-field input:focus,
.sum-field select:focus {
    outline: none;
    border-color: rgba(225, 29, 72, 0.6);
    box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.12);
}

.sum-setup-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.sum-btn {
    min-height: 50px;
    padding: 0 20px;
    border: 1px solid rgba(244, 63, 94, 0.24);
    border-radius: 15px;
    background: #ffffff;
    color: #0f172a;
    cursor: pointer;
    font-size: 14px;
    font-weight: 900;
    white-space: nowrap;
    transition:
        transform 0.18s ease,
        box-shadow 0.18s ease,
        border-color 0.18s ease,
        background 0.18s ease;
}

.sum-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(225, 29, 72, 0.38);
    box-shadow: 0 10px 22px rgba(225, 29, 72, 0.12);
}

.sum-btn-primary {
    border-color: #be123c;
    background: linear-gradient(135deg, #e11d48, #fb7185);
    color: #ffffff;
}

.is-hidden {
    display: none !important;
}

.sum-game-screen {
    margin-top: 24px;
    padding: 24px;
    border: 1px solid rgba(244, 63, 94, 0.16);
    border-radius: 30px;
    background:
        radial-gradient(circle at top left, rgba(251, 113, 133, 0.12), transparent 34%),
        #ffffff;
    box-shadow: 0 20px 56px rgba(15, 23, 42, 0.1);
}

.sum-game-header,
.sum-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 20px;
}

.sum-game-header h2,
.sum-card-head h2,
.sum-help-card h2 {
    margin: 10px 0 6px;
    color: #0f172a;
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -0.04em;
}

.sum-game-desc,
.sum-card-head p {
    margin: 0;
    color: #64748b;
    font-size: 14px;
    line-height: 1.7;
}

.sum-game-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.sum-stats {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.sum-stats div {
    padding: 14px;
    border-radius: 18px;
    background:
        radial-gradient(circle at top right, rgba(251, 113, 133, 0.08), transparent 36%),
        #fff7f8;
    text-align: center;
}

.sum-stats span {
    display: block;
    margin-bottom: 7px;
    color: #64748b;
    font-size: 12px;
    font-weight: 800;
}

.sum-stats strong {
    color: #be123c;
    font-size: 22px;
    font-weight: 900;
}

/* Game Board */
.sum-board-wrap {
    position: relative;
    overflow: hidden;
    touch-action: none;
    padding: 6px;
    border: 1px solid rgba(244, 63, 94, 0.24);
    border-radius: 22px;
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.38) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255, 255, 255, 0.38) 1px, transparent 1px),
        radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.35), transparent 20%),
        linear-gradient(135deg, #ffe4e6, #fecdd3);
    background-size: 16px 16px, 16px 16px, auto, auto;
    box-shadow:
        inset 0 0 0 3px rgba(255, 255, 255, 0.42),
        0 18px 44px rgba(15, 23, 42, 0.12);
}

.sum-board {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 0;
}

.sum-cell {
    position: relative;
    box-sizing: border-box;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    color: #ffffff;
    font-size: clamp(13px, 1.25vw, 22px);
    font-weight: 950;
    line-height: 1;
    isolation: isolate;
    transform-origin: center;
    transition:
        transform 0.14s ease,
        filter 0.14s ease,
        opacity 0.18s ease;
}

.sum-cell::before {
    content: "❤";
    position: absolute;
    inset: -8%;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ef233c;
    font-size: clamp(40px, 4vw, 64px);
    line-height: 1;
    text-shadow:
        0 2px 0 rgba(190, 18, 60, 0.18),
        0 8px 16px rgba(225, 29, 72, 0.28);
    transform-origin: center;
    transition:
        transform 0.14s ease,
        color 0.14s ease,
        filter 0.14s ease,
        opacity 0.18s ease;
}

.sum-cell::after {
    content: "";
    position: absolute;
    z-index: 2;
    width: 42%;
    height: 30%;
    top: 18%;
    left: 24%;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.24);
    transform: rotate(-24deg);
    pointer-events: none;
    opacity: 0.9;
}

.sum-cell-number {
    position: relative;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1em;
    color: #ffffff;
    font-size: 1em;
    font-weight: 950;
    letter-spacing: -0.04em;
    text-shadow:
        0 1px 2px rgba(127, 29, 29, 0.86),
        0 2px 5px rgba(127, 29, 29, 0.45);
    transform: translateY(2%);
    pointer-events: none;
}

.sum-cell:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 8px 10px rgba(225, 29, 72, 0.18));
}

.sum-cell:hover::before {
    color: #f43f5e;
}

.sum-cell.selected {
    z-index: 4;
    outline: none;
    transform: scale(1.12);
    filter:
        drop-shadow(0 0 8px rgba(255, 255, 255, 0.95))
        drop-shadow(0 8px 14px rgba(225, 29, 72, 0.24));
}

.sum-cell.selected::before {
    color: #e11d48;
    transform: scale(1.12);
    filter:
        drop-shadow(0 0 10px rgba(255, 255, 255, 0.92))
        drop-shadow(0 0 18px rgba(251, 113, 133, 0.95));
}

.sum-cell.selected::after {
    opacity: 1;
    background: rgba(255, 255, 255, 0.34);
}

.sum-cell.selected .sum-cell-number {
    text-shadow:
        0 1px 2px rgba(127, 29, 29, 0.9),
        0 0 8px rgba(255, 255, 255, 0.78);
}

.sum-cell.removing {
    animation: heartRemove 0.28s ease forwards;
}

.sum-cell.removed {
    opacity: 0;
    transform: scale(0.48);
    pointer-events: none;
}

.sum-cell.removed::before,
.sum-cell.removed::after {
    opacity: 0;
}

@keyframes heartRemove {
    0% {
        opacity: 1;
        transform: scale(1);
    }

    55% {
        opacity: 0.9;
        transform: scale(1.26) rotate(-5deg);
        filter:
            drop-shadow(0 0 14px rgba(255, 255, 255, 0.9))
            drop-shadow(0 0 20px rgba(244, 63, 94, 0.9));
    }

    100% {
        opacity: 0;
        transform: scale(0.42) rotate(8deg);
    }
}

.sum-select-box {
    position: absolute;
    z-index: 100;
    border: 2px solid rgba(225, 29, 72, 0.95);
    background: rgba(244, 63, 94, 0.14);
    border-radius: 10px;
    pointer-events: none;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.72),
        0 10px 28px rgba(225, 29, 72, 0.18);
}

.sum-message {
    margin-top: 18px;
    padding: 16px;
    border-radius: 18px;
    background: #fff7f8;
    border: 1px solid rgba(244, 63, 94, 0.14);
    color: #881337;
    text-align: center;
    font-size: 15px;
    font-weight: 800;
}

.sum-ranking-card,
.sum-help-card {
    margin-top: 24px;
    padding: 26px;
    border: 1px solid rgba(244, 63, 94, 0.16);
    border-radius: 26px;
    background: #ffffff;
    box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.sum-ranking-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.sum-rank-tab {
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid rgba(244, 63, 94, 0.24);
    border-radius: 999px;
    background: #ffffff;
    color: #475569;
    cursor: pointer;
    font-size: 13px;
    font-weight: 900;
}

.sum-rank-tab.is-active {
    background: #e11d48;
    color: #ffffff;
    border-color: #e11d48;
}

.sum-ranking-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.sum-ranking-panel {
    padding: 18px;
    border-radius: 20px;
    background: #fff7f8;
    border: 1px solid rgba(244, 63, 94, 0.14);
}

.sum-ranking-panel h3 {
    margin: 0 0 12px;
    color: #0f172a;
    font-size: 16px;
    font-weight: 900;
}

.sum-ranking-list {
    margin: 0;
    padding-left: 22px;
}

.sum-ranking-list li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(244, 63, 94, 0.14);
    color: #334155;
    font-weight: 800;
    line-height: 1.6;
}

.sum-ranking-list li:last-child {
    border-bottom: none;
}

.sum-help-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.sum-help-grid div {
    padding: 20px;
    border-radius: 20px;
    background: #fff7f8;
    border: 1px solid rgba(244, 63, 94, 0.14);
}

.sum-help-grid h3 {
    margin: 0 0 8px;
    color: #0f172a;
    font-size: 16px;
    font-weight: 900;
}

.sum-help-grid p {
    margin: 0;
    color: #64748b;
    font-size: 14px;
    line-height: 1.7;
}

.sum-game-over {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(15, 23, 42, 0.58);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.sum-game-over-card {
    width: min(100%, 460px);
    padding: 32px;
    border-radius: 28px;
    background: #ffffff;
    text-align: center;
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.28);
}

.sum-game-over-card h2 {
    margin: 16px 0 10px;
    color: #0f172a;
    font-size: 30px;
    font-weight: 900;
    letter-spacing: -0.04em;
}

.sum-game-over-card > strong {
    display: block;
    margin: 0 0 12px;
    color: #e11d48;
    font-size: 42px;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.sum-game-over-card p {
    margin: 0;
    color: #64748b;
    font-size: 14px;
    line-height: 1.7;
}

.sum-game-over-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 22px;
}

.sum-game-over-actions .sum-btn:nth-child(3) {
    grid-column: 1 / -1;
}

@media (max-width: 1180px) {
    .sum-stats {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .sum-cell::before {
        font-size: clamp(34px, 4.8vw, 58px);
    }
}

@media (max-width: 980px) {
    .sum-setup-card {
        grid-template-columns: 1fr;
    }

    .sum-setup-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .sum-game-header,
    .sum-card-head {
        flex-direction: column;
    }

    .sum-game-actions {
        width: 100%;
    }

    .sum-game-actions .sum-btn {
        flex: 1;
    }

    .sum-help-grid,
    .sum-ranking-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .sum-puzzle-page {
        padding: 10px 0 44px;
    }

    .sum-hero {
        padding: 24px 14px 22px;
    }

    .sum-game-screen,
    .sum-setup-card,
    .sum-ranking-card,
    .sum-help-card {
        padding: 18px;
        border-radius: 22px;
    }

    .sum-setup-actions {
        grid-template-columns: 1fr;
    }

    .sum-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sum-board-wrap {
        padding: 4px;
        border-radius: 18px;
        background-size: 14px 14px, 14px 14px, auto, auto;
    }

    .sum-board {
        gap: 0;
    }

    .sum-cell {
        font-size: 11px;
    }

    .sum-cell::before {
        inset: -10%;
        font-size: clamp(24px, 7vw, 38px);
    }

    .sum-cell::after {
        width: 38%;
        height: 26%;
        top: 18%;
        left: 25%;
    }

    .sum-btn {
        width: 100%;
    }

    .sum-game-over-card {
        padding: 24px;
        border-radius: 22px;
    }

    .sum-game-over-actions {
        grid-template-columns: 1fr;
    }

    .sum-game-over-actions .sum-btn:nth-child(3) {
        grid-column: auto;
    }
}