:root {
    color-scheme: dark;
    --bg: #0f1419;
    --bg-elevated: #151c24;
    --bg-panel: #1b2530;
    --bg-panel-strong: #222f3d;
    --text: #f5f7fa;
    --muted: #aab6c3;
    --border: #2c3947;
    --primary: #59c3a5;
    --primary-strong: #3ba487;
    --warning: #ffbf69;
    --danger: #ff7b72;
    --danger-soft: rgba(255, 123, 114, 0.12);
    --success: #59c3a5;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    --radius: 18px;
    --radius-sm: 12px;
    --max-width: 1380px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(89, 195, 165, 0.16), transparent 35%),
        radial-gradient(circle at top right, rgba(255, 191, 105, 0.12), transparent 30%),
        linear-gradient(180deg, #0f1419 0%, #131a22 100%);
    color: var(--text);
}

button,
input,
select,
textarea {
    font: inherit;
}

[hidden] {
    display: none !important;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
}

.hero,
.page {
    width: min(calc(100% - 32px), var(--max-width));
    margin: 0 auto;
}

.auth-shell {
    width: min(calc(100% - 32px), var(--max-width));
    margin: 0 auto;
    padding: 28px 0 8px;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(280px, 0.9fr));
    gap: 20px;
}

.auth-card {
    padding: 24px;
    background: rgba(27, 37, 48, 0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.auth-card-intro {
    display: grid;
    align-content: start;
}

.auth-list {
    margin: 18px 0 0;
    padding-left: 18px;
    color: var(--muted);
}

#invite-notice,
#auth-feedback {
    margin-top: 16px;
}

.shell-bar {
    width: min(calc(100% - 32px), var(--max-width));
    margin: 18px auto 0;
}

.shell-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-radius: var(--radius);
    background: rgba(27, 37, 48, 0.92);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.shell-identity {
    display: grid;
    gap: 4px;
}

.shell-controls {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.shell-controls > * {
    max-width: 100%;
}

.compact-field {
    min-width: 240px;
}

.invite-result {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.ai-result-block {
    padding: 16px 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    background: rgba(17, 24, 32, 0.76);
}

.ai-result-block h3 {
    margin: 0 0 10px;
}

.ai-reason-list {
    display: grid;
    gap: 10px;
}

.ai-reason-item p {
    margin: 6px 0 0;
    color: var(--muted);
}

.ai-doc-output {
    width: 100%;
    min-height: 92px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(8, 13, 18, 0.88);
    color: var(--text);
    padding: 12px 14px;
    resize: vertical;
}

.ai-doc-output-large {
    min-height: 220px;
}

.hero {
    padding: 40px 0 20px;
    display: grid;
    grid-template-columns: minmax(0, 2.1fr) minmax(300px, 1fr);
    gap: 20px;
}

.hero-copy,
.hero-meta,
.panel,
.modal-card {
    background: rgba(27, 37, 48, 0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-copy {
    padding: 28px;
}

.hero-copy h1 {
    margin: 0 0 10px;
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.hero-text {
    margin: 0;
    max-width: 780px;
    color: var(--muted);
}

.eyebrow,
.section-kicker {
    margin: 0 0 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
}

.hero-actions,
.section-actions,
.panel-actions,
.modal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-actions {
    margin-top: 24px;
}

.hero-meta {
    margin: 0;
    padding: 28px;
    display: grid;
    gap: 18px;
    align-content: start;
}

.hero-meta div {
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-meta div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.hero-meta dt {
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--muted);
}

.hero-meta dd {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.page {
    padding: 0 0 40px;
}

.section {
    margin-top: 24px;
}

.section-header,
.panel-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.section-header > div,
.panel-header > div,
.idea-card-head > div,
.filter-tags-header > div {
    min-width: 0;
}

.section-header {
    margin-bottom: 16px;
}

.section-header h2,
.panel-header h3,
.detail-title {
    margin: 0;
    letter-spacing: -0.02em;
}

.panel {
    padding: 22px;
}

.panel-subtext {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.panel-actions {
    align-items: center;
    justify-content: flex-end;
}

.collapse-toggle {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.collapse-indicator {
    font-size: 18px;
    line-height: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
}

.stat-card {
    padding: 18px;
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, rgba(89, 195, 165, 0.12), rgba(255, 255, 255, 0.04));
    border: 1px solid rgba(89, 195, 165, 0.22);
}

.stat-card dt {
    margin: 0 0 10px;
    font-size: 13px;
    color: var(--muted);
}

.stat-card dd {
    margin: 0;
    font-size: 28px;
    font-weight: 800;
}

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

.idea-list-shell {
    margin-top: 16px;
}

.filter-panel {
    margin-bottom: 16px;
}

.filter-grid,
.form-grid {
    display: grid;
    gap: 14px;
}

.filter-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

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

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

.field span {
    font-size: 14px;
    font-weight: 600;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-elevated);
    color: var(--text);
}

.field textarea {
    resize: vertical;
    min-height: 108px;
}

.checkbox-field {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 28px;
}

.checkbox-field input {
    width: auto;
}

.filter-tags {
    margin-top: 18px;
}

.filter-tags-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.filter-tags-header small {
    color: var(--muted);
}

.inline-select {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 13px;
}

.inline-select select {
    padding: 9px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text);
}

.chip-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.chip,
.status-pill,
.score-pill,
.tag-chip {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.04);
    font-size: 13px;
    line-height: 1.2;
    max-width: 100%;
    overflow-wrap: anywhere;
}

.chip {
    color: var(--muted);
    transition: 0.18s ease;
}

.chip.is-active {
    color: var(--text);
    border-color: rgba(89, 195, 165, 0.44);
    background: rgba(89, 195, 165, 0.18);
}

.status-pill,
.score-pill {
    font-weight: 700;
}

.status-backlog {
    background: rgba(89, 195, 165, 0.14);
    border-color: rgba(89, 195, 165, 0.24);
}

.status-review {
    background: rgba(127, 183, 255, 0.14);
    border-color: rgba(127, 183, 255, 0.24);
}

.status-build {
    background: rgba(255, 191, 105, 0.16);
    border-color: rgba(255, 191, 105, 0.25);
}

.status-shipped {
    background: rgba(133, 244, 181, 0.16);
    border-color: rgba(133, 244, 181, 0.25);
}

.status-rejected,
.status-archived {
    background: rgba(255, 123, 114, 0.12);
    border-color: rgba(255, 123, 114, 0.2);
}

.score-pill.is-positive {
    color: var(--success);
}

.score-pill.is-negative {
    color: var(--danger);
}

.score-pill.is-neutral {
    color: var(--warning);
}

.tag-chip {
    padding: 7px 10px;
    font-size: 12px;
}

.tag-chip.plus {
    color: #9de7d3;
}

.tag-chip.minus {
    color: #ffb4ad;
}

.table-wrap {
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.idea-card-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 14px;
}

.idea-card {
    display: grid;
    gap: 14px;
    padding: 16px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(7, 12, 18, 0.22));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.idea-card.is-selected {
    border-color: rgba(89, 195, 165, 0.38);
    background: linear-gradient(180deg, rgba(89, 195, 165, 0.14), rgba(7, 12, 18, 0.28));
}

.idea-card-main {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    display: grid;
    gap: 14px;
}

.idea-card-head,
.idea-card-status-row,
.idea-card-actions {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.idea-card-title {
    margin: 0 0 6px;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -0.02em;
    overflow-wrap: anywhere;
}

.idea-card-summary {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.idea-card-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
}

.idea-card-meta div {
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.idea-card-meta dt {
    margin: 0 0 6px;
    font-size: 12px;
    color: var(--muted);
}

.idea-card-meta dd {
    margin: 0;
    font-size: 14px;
    font-weight: 700;
}

.idea-table {
    width: 100%;
    min-width: 900px;
    border-collapse: collapse;
}

.idea-table th,
.idea-table td {
    padding: 14px;
    vertical-align: top;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    text-align: left;
}

.idea-table tbody tr {
    transition: background 0.16s ease;
}

.idea-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.idea-table tbody tr.is-selected {
    background: rgba(89, 195, 165, 0.1);
}

.row-title-button,
.row-action-button {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
}

.row-title-button strong {
    display: block;
    margin-bottom: 4px;
}

.row-summary,
.meta-line,
.detail-muted,
.empty-state {
    color: var(--muted);
    overflow-wrap: anywhere;
}

.stack-list {
    display: grid;
    gap: 12px;
}

.stack-item {
    padding: 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.stack-item-head,
.detail-meta,
.detail-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.stack-item-title {
    margin: 0 0 4px;
}

.detail-panel {
    min-height: 280px;
}

.detail-body {
    display: grid;
    gap: 18px;
}

.detail-block {
    display: grid;
    gap: 10px;
}

.detail-block h4 {
    margin: 0;
    font-size: 15px;
    color: var(--muted);
}

.detail-description,
.detail-note {
    margin: 0;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.detail-actions {
    margin-top: 8px;
}

.detail-status-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.detail-status-row select {
    min-width: 180px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text);
}

.button,
.icon-button {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    transition: 0.18s ease;
}

.button {
    padding: 11px 16px;
    white-space: normal;
}

.button:hover,
.icon-button:hover,
.chip:hover,
.idea-card-main:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.18);
}

.button-primary {
    background: linear-gradient(180deg, var(--primary), var(--primary-strong));
    border-color: transparent;
    color: #062f25;
    font-weight: 800;
}

.button-ghost {
    background: transparent;
}

.icon-button {
    width: 42px;
    height: 42px;
    font-size: 28px;
    line-height: 1;
}

.form-stack {
    display: grid;
    gap: 16px;
}

.score-preview {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    border-radius: 14px;
    background: rgba(89, 195, 165, 0.12);
    border: 1px solid rgba(89, 195, 165, 0.22);
}

.score-preview h3 {
    margin: 0;
    font-size: 36px;
}

.score-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin: 0;
}

.score-meta dt {
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 12px;
}

.score-meta dd {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.message-box {
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 14px;
}

.message-error {
    background: var(--danger-soft);
    border: 1px solid rgba(255, 123, 114, 0.2);
    color: #ffd2ce;
}

.message-warning {
    background: rgba(255, 191, 105, 0.12);
    border: 1px solid rgba(255, 191, 105, 0.22);
    color: #ffddac;
}

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

.tag-panel {
    padding: 18px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.03);
}

.tag-groups {
    display: grid;
    gap: 14px;
}

.tag-group {
    display: grid;
    gap: 10px;
}

.tag-group h4 {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.tag-option-list {
    display: grid;
    gap: 10px;
}

.tag-option {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.07);
    background: rgba(255, 255, 255, 0.02);
}

.tag-option.is-disabled {
    opacity: 0.56;
}

.tag-option input {
    margin-top: 2px;
}

.tag-option-body {
    display: grid;
    gap: 6px;
}

.tag-option-head {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.tag-score {
    font-weight: 700;
}

.tag-state {
    font-size: 11px;
    color: var(--warning);
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    padding: 24px;
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 7, 12, 0.72);
    backdrop-filter: blur(6px);
}

.modal-card {
    position: relative;
    width: min(100%, 680px);
    max-height: calc(100vh - 48px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    padding: 22px;
}

.modal-large {
    width: min(1100px, 100%);
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.empty-state {
    padding: 22px 0;
}

.embed-shell {
    width: min(calc(100% - 20px), 960px);
    margin: 18px auto;
}

.embed-card {
    padding: 18px;
}

.embed-subtext {
    margin: 0;
    color: var(--muted);
}

@media (max-width: 1100px) {
    .auth-shell,
    .stats-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .filter-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .auth-shell,
    .dashboard-grid,
    .tag-layout,
    .hero {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .auth-shell,
    .hero,
    .page {
        width: min(calc(100% - 20px), var(--max-width));
    }

    .auth-shell,
    .hero {
        padding-top: 20px;
    }

    .stats-grid,
    .filter-grid,
    .two-columns,
    .idea-card-meta {
        grid-template-columns: 1fr;
    }

    .panel,
    .hero-copy,
    .hero-meta,
    .auth-card,
    .modal-card {
        padding: 18px;
    }

    .shell-bar {
        width: min(calc(100% - 20px), var(--max-width));
    }

    .shell-bar-inner,
    .score-preview,
    .section-header,
    .panel-header {
        flex-direction: column;
        align-items: stretch;
    }

    .shell-controls,
    .filter-tags-header,
    .idea-card-head,
    .idea-card-status-row,
    .idea-card-actions,
    .detail-meta,
    .detail-actions,
    .modal-header,
    .modal-actions,
    .hero-actions,
    .section-actions,
    .panel-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .compact-field {
        min-width: 0;
        width: 100%;
    }

    .shell-controls .button,
    .shell-controls .field,
    .hero-actions .button,
    .section-actions .button,
    .panel-actions .button,
    .idea-card-actions .button,
    .detail-actions .button,
    .modal-actions .button {
        width: 100%;
    }

    .collapse-toggle {
        display: inline-flex;
    }

    .mobile-collapsible[data-collapsed="true"] > .collapsible-body {
        display: none;
    }

    .mobile-collapsible[data-collapsed="true"] > .section-header {
        margin-bottom: 0;
    }

    .inline-select {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .inline-select select,
    .detail-status-row select,
    .detail-status-row .button {
        width: 100%;
    }

    .modal {
        padding: 10px;
    }

    .modal-card,
    .modal-large {
        width: 100%;
        max-height: calc(100vh - 20px);
    }

    .modal-header .icon-button {
        align-self: flex-end;
    }

    .idea-table {
        min-width: 640px;
    }
}