:root {
    --bg: #f3efe7;
    --surface: rgba(255, 255, 255, 0.92);
    --surface-strong: #ffffff;
    --text: #1f2937;
    --muted: #5b6473;
    --accent: #0f766e;
    --accent-strong: #115e59;
    --accent-soft: #d7f3ee;
    --highlight: #ffd166;
    --border: rgba(31, 41, 55, 0.12);
    --shadow: 0 24px 80px rgba(15, 23, 42, 0.14);
    --radius: 24px;
}

* {
    box-sizing: border-box;
}

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

body {
    font-family: "Manrope", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(244, 114, 182, 0.14), transparent 24%),
        linear-gradient(180deg, #f8f4ed 0%, #f1ece2 100%);
}

button,
input,
textarea {
    font: inherit;
}

.page-shell {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 1.25rem 0 2rem;
}

.hero {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.hero.board-only {
    justify-content: center;
    text-align: center;
}

.hero.board-only #formToggle {
    display: none;
}

h1,
h2,
h3 {
    font-family: "Fraunces", serif;
    margin: 0;
}

h1 {
    font-size: clamp(2.3rem, 5vw, 4rem);
    line-height: 1;
}

.section-heading p,
.hint {
    color: var(--muted);
}

.layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.9fr);
    gap: 1.5rem;
    align-items: start;
}

.layout.board-only {
    grid-template-columns: minmax(0, 1fr);
    justify-items: center;
}

.layout.board-only .board-panel {
    width: min(900px, 100%);
}

.board-panel,
.setup-card,
.answers-dialog {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.board-panel,
.setup-card {
    border-radius: var(--radius);
    padding: 1.25rem;
}

.board-header,
.dialog-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}

.board-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

.primary-button,
.secondary-button,
.ghost-button,
.tab {
    border: 0;
    border-radius: 999px;
    padding: 0.8rem 1.15rem;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.primary-button {
    background: var(--accent);
    color: white;
    font-weight: 700;
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.tab:hover {
    transform: translateY(-1px);
}

.secondary-button {
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-weight: 700;
}

.ghost-button {
    background: rgba(255, 255, 255, 0.55);
    color: var(--text);
    border: 1px solid var(--border);
}

#BingoBoard {
    width: min(650px, 100%);
    border-radius: 28px;
    background: #0f172a;
    color: white;
    margin: 1.25rem auto 0;
    padding: 0.65rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.boardrow {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

#BingoBoard .cell {
    aspect-ratio: 1 / 1;
    margin: 0.22rem;
    cursor: pointer;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    color: var(--text);
    background: linear-gradient(180deg, #ffffff 0%, #eff4f8 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0.6rem;
    font-weight: 700;
    overflow: hidden;
}

.cellWrap {
    width: 100%;
}

.cellWrap p {
    margin: 0;
    font-size: clamp(0.8rem, 1.65vw, 1rem);
    line-height: 1.2;
}

.backColorYellow {
    background: linear-gradient(180deg, #ffe7a3 0%, #ffd166 100%) !important;
}

#BingoBoard.winner {
    animation: winner-pulse 0.9s ease 3;
}

.cellWinner {
    outline: 3px solid #ef4444;
    outline-offset: -3px;
}

.unused-panel,
.share-section {
    margin-top: 1.25rem;
    border-radius: 20px;
    padding: 1rem;
    background: var(--surface-strong);
    border: 1px solid var(--border);
}

.section-heading {
    margin-bottom: 0.8rem;
}

.section-heading p {
    margin: 0.35rem 0 0;
}

.unused-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.unusedTerm {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
    font-weight: 600;
}

.setup-card {
    position: sticky;
    top: 1rem;
}

.samples {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.samples a {
    color: var(--accent-strong);
    font-weight: 700;
    text-decoration: none;
}

.tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.7rem;
    margin-bottom: 1rem;
}

.tab {
    background: rgba(15, 118, 110, 0.08);
    color: var(--accent-strong);
    font-weight: 700;
}

.tab.active {
    background: var(--accent);
    color: white;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

.input-label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 700;
}

input[type="text"],
input[type="url"],
input[type="file"],
textarea {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 0.85rem 0.95rem;
    background: rgba(255, 255, 255, 0.86);
    color: var(--text);
}

textarea {
    resize: vertical;
    min-height: 180px;
}

.hint,
.feedback {
    font-size: 0.94rem;
}

.feedback {
    min-height: 1.3rem;
    margin: 1rem 0 0;
    color: var(--accent-strong);
    font-weight: 600;
}

.share-links {
    display: grid;
    gap: 0.7rem;
}

.print-controls {
    display: grid;
    grid-template-columns: minmax(0, 180px) auto;
    gap: 0.8rem;
    align-items: end;
}

.copy-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: center;
}

.icon-button {
    min-width: 72px;
    padding-inline: 0.95rem;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.checkbox-row input {
    width: auto;
    transform: scale(1.15);
}

.hidden {
    display: none !important;
}

.answers-dialog {
    width: min(860px, calc(100% - 2rem));
    border-radius: 24px;
    border: 1px solid var(--border);
    padding: 1rem;
}

.answers-dialog::backdrop {
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
}

.dialog-content {
    max-height: 70vh;
    overflow: auto;
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    border: 1px solid var(--border);
    padding: 0.75rem;
    text-align: left;
    vertical-align: top;
}

thead {
    background: #f4f7f9;
}

code {
    background: #eef2f7;
    border-radius: 6px;
    padding: 0.1rem 0.35rem;
}

@keyframes winner-pulse {
    0%,
    100% {
        background: #0f172a;
    }
    50% {
        background: #166534;
    }
}

@media (max-width: 960px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .setup-card {
        position: static;
    }
}

@media (max-width: 700px) {
    .page-shell {
        width: min(100% - 1rem, 100%);
        padding-top: 0.75rem;
    }

    .hero,
    .board-header,
    .dialog-header,
    .field-grid {
        grid-template-columns: 1fr;
        display: grid;
    }

    .board-actions,
    .samples {
        gap: 0.55rem;
    }

    .copy-row {
        grid-template-columns: 1fr;
    }

    .print-controls {
        grid-template-columns: 1fr;
    }

    #BingoBoard {
        padding: 0.4rem;
    }

    #BingoBoard .cell {
        border-radius: 14px;
        margin: 0.16rem;
        padding: 0.45rem;
    }
}