/*
 * Unified visual language for the sotsusei experience
 * Establishes consistent typography, spacing, components, and color usage.
 */
:root {
    --font-base: -apple-system, BlinkMacSystemFont, "SF Pro JP", "Hiragino Sans", "Noto Sans JP", sans-serif;
    --font-heading: -apple-system, BlinkMacSystemFont, "SF Pro JP", "Hiragino Sans", "Noto Sans JP", sans-serif;

    --color-background: #f5f5f7;
    --color-surface: #ffffff;
    --color-surface-subtle: #f2f3f5;
    --color-primary: #0a84ff;
    --color-primary-strong: #0060df;
    --color-accent: #ff9f0a;
    --color-text-primary: #1c1c1e;
    --color-text-secondary: #3a3a3c;
    --color-text-muted: #6c6c70;
    --color-border: #d1d1d6;
    --color-border-strong: #aeaeb2;

    --radius-xl: 24px;
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-full: 999px;

    --shadow-elevated: 0 18px 48px rgba(17, 17, 17, 0.12);
    --shadow-soft: 0 10px 30px rgba(28, 28, 30, 0.08);

    --transition-base: all 0.2s ease;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-base);
    background: linear-gradient(180deg, #ffffff 0%, var(--color-background) 100%);
    color: var(--color-text-primary);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: clamp(32px, 6vw, 88px) clamp(24px, 6vw, 88px);
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    display: block;
}

a {
    color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(10, 132, 255, 0.35);
    outline-offset: 2px;
}

.page-container {
    width: min(720px, 100%);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-elevated);
    padding: clamp(32px, 4vw, 56px);
    display: flex;
    flex-direction: column;
    gap: clamp(20px, 2.8vw, 32px);
}

.page-container--compact {
    width: min(520px, 100%);
}

.page-container--wide {
    width: min(820px, 100%);
}

.page-stack {
    display: flex;
    flex-direction: column;
    gap: clamp(16px, 2.4vw, 28px);
}

.progress-header {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.progress-label {
    font-size: clamp(1rem, 0.9rem + 0.4vw, 1.25rem);
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.progress-track {
    position: relative;
    width: 100%;
    height: 0.625rem;
    background: rgba(10, 132, 255, 0.12);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-track::before {
    content: "";
    position: absolute;
    inset: 0;
    width: var(--progress, 0%);
    background: linear-gradient(90deg, var(--color-primary), #58adff);
    border-radius: inherit;
    transition: width 0.35s ease;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-text-primary);
    margin: 0;
    line-height: 1.35;
}

h1 {
    font-size: clamp(1.6rem, 1.4rem + 1.5vw, 2.25rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.1rem, 1.05rem + 0.9vw, 1.5rem);
    font-weight: 600;
}

h3 {
    font-size: clamp(1rem, 0.96rem + 0.5vw, 1.2rem);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0;
}

p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.lead {
    font-size: 1.05rem;
    color: var(--color-text-primary);
    line-height: 1.75;
}

.text-muted {
    color: var(--color-text-muted);
}

.tag {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: rgba(10, 132, 255, 0.12);
    color: var(--color-primary);
}

.tag--solid {
    background: var(--color-primary);
    color: #ffffff;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0 1.6rem;
    min-height: 52px;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    letter-spacing: 0.01em;
}

.button--primary {
    background: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 8px 18px rgba(10, 132, 255, 0.25);
}

.button--primary:hover {
    background: var(--color-primary-strong);
    box-shadow: 0 12px 28px rgba(0, 96, 223, 0.28);
    transform: translateY(-1px);
}

.button--ghost {
    background: rgba(10, 132, 255, 0.08);
    color: var(--color-primary);
}

.button--ghost:hover {
    background: rgba(10, 132, 255, 0.16);
}

.button--full {
    width: 100%;
}

.option-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.option-button {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.9rem;
    width: 100%;
    padding: 1.1rem 1.4rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), var(--color-surface-subtle));
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    transition: var(--transition-base);
}

.option-button[disabled] {
    opacity: 0.45;
    pointer-events: none;
    cursor: not-allowed;
}

.option-button:hover {
    border-color: var(--color-primary);
    box-shadow: 0 14px 28px rgba(10, 132, 255, 0.18);
    transform: translateY(-2px);
}

.option-button.option-button--selected {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.18);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), #f0f6ff);
}

.option-button.option-button--selected .option-label {
    color: var(--color-primary);
}

.option-emoji {
    font-size: 1.35rem;
    flex-shrink: 0;
}

.option-label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.option-label span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.eyebrow {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-text-muted);
}

.hero-banner {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: clamp(24px, 4vw, 32px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(209, 209, 214, 0.8);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.hero-banner__heading {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.hero-banner__vision-block {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.hero-banner__vision {
    font-size: clamp(1.1rem, 1.02rem + 0.8vw, 1.45rem);
    line-height: 1.65;
    color: var(--color-text-primary);
}

.hero-banner__note {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.perspective-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.95rem;
    border-radius: var(--radius-full);
    background: rgba(255, 159, 10, 0.14);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero-bullet-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.hero-bullet-list li {
    display: flex;
    gap: 0.75rem;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--color-text-secondary);
    position: relative;
    padding-left: 1.6rem;
}

.hero-bullet-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65rem;
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 0 6px rgba(10, 132, 255, 0.12);
}

.timeline {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    border-left: 1px solid rgba(209, 209, 214, 0.8);
    padding-left: 1.4rem;
}

.timeline__item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    align-items: start;
}

.timeline__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: rgba(10, 132, 255, 0.1);
    color: var(--color-primary);
    font-weight: 700;
    letter-spacing: 0.08em;
}

.timeline__item p {
    margin-top: 0.35rem;
}

.choice-grid {
    display: grid;
    gap: 16px;
}

@media (min-width: 640px) {
    .choice-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.supporting-copy {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.resource-grid {
    display: grid;
    gap: clamp(18px, 3vw, 28px);
}

@media (min-width: 720px) {
    .resource-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.resource-card {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(209, 209, 214, 0.7);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(242, 243, 245, 0.92));
    padding: clamp(20px, 3vw, 24px);
    box-shadow: 0 16px 40px rgba(28, 28, 30, 0.08);
    min-height: 100%;
}

.resource-card__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.resource-badge {
    padding: 0.35rem 0.7rem;
    border-radius: var(--radius-full);
    background: rgba(10, 132, 255, 0.14);
    color: var(--color-primary);
    font-weight: 700;
}

.resource-meta {
    font-weight: 600;
}

.resource-card p {
    font-size: 0.94rem;
    line-height: 1.6;
}

.resource-card__link {
    align-self: flex-start;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: color 0.2s ease, transform 0.2s ease;
}

.resource-card__link::after {
    content: "→";
    font-size: 0.9rem;
}

.resource-card__link:hover {
    color: var(--color-primary-strong);
    transform: translateX(2px);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-card {
    background: var(--color-surface-subtle);
    border: 1px solid rgba(208, 214, 226, 0.6);
    border-radius: var(--radius-lg);
    padding: 1.05rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
}

.article-card span,
.article-card p {
    font-size: 0.92rem;
    line-height: 1.6;
}

.article-url {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    word-break: break-all;
}

.note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.comment-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.comment-bubble {
    border-radius: var(--radius-lg);
    padding: 1rem 1.3rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(242, 243, 245, 0.92));
    border: 1px solid rgba(209, 209, 214, 0.7);
}

.comment-bubble__time {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.autosave-hint {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.form-error {
    font-size: 0.85rem;
    color: #d12f2f;
    margin: 0;
}

.comment-list--highlight .comment-bubble {
    border-color: rgba(10, 132, 255, 0.3);
    box-shadow: 0 18px 32px rgba(10, 132, 255, 0.12);
}

body.page--vision-propose {
    background: var(--color-background);
    background-image: none;
}

body.page--vision-propose .comment-bubble {
    background: var(--color-surface);
    background-image: none;
}

body.page--vision-propose .progress-track::before {
    background: var(--color-primary);
}

.input-shell {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-field,
textarea,
input[type="text"] {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface-subtle);
    padding: 1rem 1.1rem;
    font-family: var(--font-base);
    font-size: 1rem;
    color: var(--color-text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    resize: vertical;
    min-height: 110px;
}

input[type="text"] {
    min-height: auto;
}

.input-field:focus,
textarea:focus,
input[type="text"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(56, 85, 228, 0.15);
}

.stats-board {
    position: relative;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(209, 209, 214, 0.7);
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.96), rgba(239, 241, 246, 0.95));
    padding: clamp(22px, 3vw, 28px);
    box-shadow: 0 20px 48px rgba(17, 17, 17, 0.08);
}

.stat-group {
    display: grid;
    gap: 1.4rem;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    gap: 1.2rem;
}

.stats-board--modern {
    display: flex;
    flex-direction: column;
    gap: clamp(18px, 2.8vw, 24px);
}

.stats-header h2 {
    margin-top: 0.25rem;
}

.stat-grid {
    display: grid;
    gap: clamp(16px, 2vw, 20px);
}

@media (min-width: 640px) {
    .stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: clamp(16px, 2vw, 20px);
    border-radius: var(--radius-md);
    border: 1px solid rgba(209, 209, 214, 0.7);
    background: rgba(255, 255, 255, 0.85);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
}

.stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(10, 132, 255, 0.24);
    background: rgba(10, 132, 255, 0.08);
    color: var(--color-primary-strong);
    font-size: 0.95rem;
    font-weight: 600;
}

.stat-value {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.unit {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 0.15rem;
}

.comments-headline {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

.comments-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: rgba(56, 85, 228, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}

.map-description {
    font-size: 0.95rem;
}

.map-frame {
    position: relative;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(235, 236, 240, 0.95));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(209, 209, 214, 0.7);
    padding: clamp(24px, 4vw, 36px);
    overflow: hidden;
    box-shadow: 0 20px 48px rgba(17, 17, 17, 0.12);
}

.map-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2.8vw, 28px);
    position: relative;
}

.map-grid::before,
.map-grid::after {
    content: "";
    position: absolute;
    background: rgba(209, 209, 214, 0.7);
    pointer-events: none;
}

.map-grid::before {
    width: 2px;
    inset: 0;
    margin-inline: auto;
}

.map-grid::after {
    height: 2px;
    inset: 0;
    margin-block: auto;
}

.map-cell {
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: clamp(1.7rem, 3.2vw, 2.6rem);
    transform: translateZ(0);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.map-cell:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(10, 132, 255, 0.18);
}

.map-cell--warm {
    background: linear-gradient(135deg, #ffe3c4, #ffc3a0);
}

.map-cell--contrast {
    background: linear-gradient(135deg, #ffc1d6, #ffa6c1);
}

.map-cell--cool {
    background: linear-gradient(135deg, #e8d8ff, #d1bcff);
}

.map-cell--calm {
    background: linear-gradient(135deg, #d9f7dd, #b8ebc2);
}


.axis-labels {
    position: absolute;
    inset: clamp(16px, 4vw, 28px);
    pointer-events: none;
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
}

.axis-labels__vertical,
.axis-labels__horizontal {
    position: absolute;
    display: grid;
}

.axis-labels__vertical {
    grid-template-rows: repeat(4, 1fr);
    justify-items: center;
    align-items: center;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.axis-labels__horizontal {
    grid-template-columns: repeat(4, 1fr);
    align-items: center;
    justify-items: center;
    left: 0;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.axis-labels__emoji {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.footer-note {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-align: center;
}

.insight-grid {
    display: grid;
    gap: clamp(16px, 3vw, 28px);
    margin-bottom: clamp(12px, 2vw, 24px);
}

@media (min-width: 900px) {
    .insight-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.insight-card {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(242, 243, 245, 0.92));
    border: 1px solid rgba(209, 209, 214, 0.7);
    padding: clamp(20px, 3vw, 26px);
    box-shadow: 0 18px 42px rgba(17, 17, 17, 0.08);
}

.insight-card p {
    font-size: 0.95rem;
    line-height: 1.65;
}

@media (max-width: 640px) {
    body {
        padding: 24px 16px;
    }

    .page-container {
        border-radius: 24px;
        padding: 24px;
    }

    .stat-grid {
        grid-template-columns: 1fr;
    }
}