/* ========================================
   CSS Variables
   ======================================== */
:root {
    --color-bg:          #f5f6f8;
    --color-surface:     #ffffff;
    --color-border:      #e2e6ea;
    --color-text:        #1a1d23;
    --color-text-muted:  #6b7280;
    --color-primary:     #2962ff;
    --color-up:          #e53e3e;
    --color-down:        #2b6cb0;
    --color-positive:    #c53030;
    --color-negative:    #2b6cb0;
    --color-neutral:     #4a5568;

    --rating-very-good:  #276749;
    --rating-good:       #2f855a;
    --rating-neutral:    #744210;
    --rating-bad:        #c05621;
    --rating-very-bad:   #9b2c2c;

    --radius:   8px;
    --shadow:   0 1px 4px rgba(0,0,0,.08);
    --gap:      16px;
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Meiryo', sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
    line-height: 1.6;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ========================================
   Header
   ======================================== */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header__inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    gap: 32px;
}
.site-header__logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.site-header__tagline {
    font-size: 11px;
    font-weight: 400;
    color: var(--color-text-muted);
}
.site-header__nav {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    position: relative;
}
.site-header__nav-label {
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--color-text);
}
.site-header__nav-label:hover { background: var(--color-bg); }
.site-header__sector-dropdown {
    display: none;
    position: absolute;
    top: 32px;
    left: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    width: 220px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
}
.site-header__nav:hover .site-header__sector-dropdown { display: block; }
.site-header__sector-dropdown a {
    display: block;
    padding: 8px 16px;
    color: var(--color-text);
    font-size: 13px;
    border-bottom: 1px solid var(--color-border);
}
.site-header__sector-dropdown a:last-child { border-bottom: none; }
.site-header__sector-dropdown a:hover { background: var(--color-bg); }

/* ========================================
   Section Commons
   ======================================== */
.section-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

/* ========================================
   Ranking Section
   ======================================== */
.ranking-section {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}
.ranking-section__inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}
.ranking-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap);
    max-width: 800px;
}
.ranking-col { padding: 16px; border-radius: var(--radius); border: 1px solid var(--color-border); }
.ranking-col--up   { border-left: 4px solid var(--color-up); }
.ranking-col--down { border-left: 4px solid var(--color-down); }
.ranking-col__title { font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.ranking-col__title--up   { color: var(--color-up); }
.ranking-col__title--down { color: var(--color-down); }
.ranking-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.ranking-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    background: var(--color-bg);
    border-radius: 4px;
    font-size: 13px;
}
.ranking-item__rank   { font-weight: 700; width: 24px; color: var(--color-text-muted); }
.ranking-item__name   { flex: 1; }
.ranking-item__change { font-weight: 700; }
.ranking-item__change--up   { color: var(--color-up); }
.ranking-item__change--down { color: var(--color-down); }
.ranking-item--loading { color: var(--color-text-muted); }
.ranking-section__note { margin-top: 8px; font-size: 12px; color: var(--color-text-muted); }

/* ========================================
   Chart Board (Front Page)
   ======================================== */
.chart-board-section { padding: 32px 0; }
.chart-board-section__inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}
.chart-board-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--gap);
}
.chart-tile {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.chart-tile__header {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}
.chart-tile__name { font-size: 13px; font-weight: 600; }
.chart-tile__chart { flex: 1; min-height: 150px; }
.chart-tile__footer {
    padding: 8px 14px;
    border-top: 1px solid var(--color-border);
    text-align: right;
}
.chart-tile__link { font-size: 12px; color: var(--color-primary); font-weight: 500; }

/* ========================================
   Sector Page
   ======================================== */
.sector-page { max-width: 1400px; margin: 0 auto; padding: 24px; }

.sector-overview { margin-bottom: 32px; }
.sector-overview__title { font-size: 24px; font-weight: 700; margin-bottom: 16px; }
.sector-overview__chart { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--color-border); }

.stocks-section { margin-bottom: 32px; }
.stocks-section__inner {}
.stocks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--gap);
}
.stock-tile {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.stock-tile__name {
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

/* ========================================
   Kessan Cards
   ======================================== */
.kessan-section { margin-bottom: 40px; }
.kessan-list { display: flex; flex-direction: column; gap: var(--gap); }
.kessan-list__empty { color: var(--color-text-muted); padding: 24px 0; }

.kessan-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}
.kessan-card__header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.kessan-card__company { font-size: 16px; font-weight: 700; flex: 1; }
.kessan-card__ticker  { font-size: 12px; color: var(--color-text-muted); font-weight: 400; }
.kessan-card__date    { font-size: 12px; color: var(--color-text-muted); margin-left: auto; }

/* 評価バッジ */
.kessan-card__rating {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
}
.rating--very-good { background: var(--rating-very-good); }
.rating--good      { background: var(--rating-good); }
.rating--neutral   { background: var(--rating-neutral); }
.rating--bad       { background: var(--rating-bad); }
.rating--very-bad  { background: var(--rating-very-bad); }
.rating--unknown   { background: var(--color-text-muted); }

/* 業績メトリクス */
.kessan-card__metrics {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 10px;
    padding: 12px;
    background: var(--color-bg);
    border-radius: 6px;
}
.metric { display: flex; flex-direction: column; align-items: center; min-width: 80px; }
.metric__label { font-size: 11px; color: var(--color-text-muted); margin-bottom: 2px; }
.metric__value { font-size: 15px; font-weight: 700; }

/* 前年同期比 */
.kessan-card__yoy {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}
.kessan-card__yoy-label { font-weight: 600; }

/* 増減カラー */
.value--positive { color: var(--color-positive); }
.value--negative { color: var(--color-negative); }
.value--neutral  { color: var(--color-neutral); }

/* 本文 */
.kessan-card__body {
    font-size: 13px;
    line-height: 1.7;
    border-top: 1px solid var(--color-border);
    padding-top: 12px;
    margin-top: 4px;
    white-space: pre-line;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: #1a1d23;
    color: #9ca3af;
    text-align: center;
    padding: 24px;
    font-size: 12px;
    margin-top: 48px;
}
.site-footer__disclaimer {
    margin-bottom: 8px;
    color: #f59e0b;
    font-weight: 500;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    .ranking-grid { grid-template-columns: 1fr; }
    .chart-board-grid { grid-template-columns: 1fr 1fr; }
    .stocks-grid { grid-template-columns: 1fr; }
    .sector-page { padding: 16px; }
    .site-header__inner { padding: 0 16px; }
}
@media (max-width: 480px) {
    .chart-board-grid { grid-template-columns: 1fr; }
    .kessan-card__metrics { gap: 10px; }
}