/* Chiyoda Next Voice — base styles
   デザインのトーン: 青グラデ + オレンジCTA + 雲モチーフ + 角丸大きめのカード
*/

:root {
  --c-primary:        #1d4ed8;     /* blue-700 */
  --c-primary-dark:   #1e3a8a;     /* blue-900 */
  --c-primary-light:  #3b82f6;     /* blue-500 */
  --c-accent:         #f59e0b;     /* amber-500 */
  --c-accent-dark:    #d97706;     /* amber-600 */
  --c-accent-soft:    #fbbf24;     /* amber-400 */
  --c-bg:             #f5f8ff;
  --c-bg-hero:        linear-gradient(180deg, #eef4ff 0%, #ffffff 80%);
  --c-text:           #1f2937;
  --c-text-soft:      #6b7280;
  --c-card:           #ffffff;
  --c-border:         #e5e7eb;
  --c-success:        #10b981;
  --c-warning:        #f59e0b;
  --shadow-sm:        0 2px 4px rgba(15, 23, 42, .04);
  --shadow-md:        0 6px 18px rgba(15, 23, 42, .08);
  --shadow-lg:        0 18px 40px rgba(15, 23, 42, .12);
  --radius-sm:        10px;
  --radius-md:        18px;
  --radius-lg:        28px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: 'Hiragino Kaku Gothic ProN', 'Yu Gothic', YuGothic, 'Noto Sans JP',
               'Helvetica Neue', Arial, sans-serif;
  font-feature-settings: 'palt';
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==== Header ==== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; color: var(--c-primary-dark);
}
.brand-logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-dark) 100%);
  display: grid; place-items: center; color: #fff; font-weight: 900;
  box-shadow: var(--shadow-sm);
}
.brand-text { line-height: 1.1; }
.brand-text small {
  display: block; font-size: 10px; color: var(--c-text-soft);
  letter-spacing: .12em; font-weight: 600;
}
.nav-pc { display: flex; gap: 6px; align-items: center; }
.nav-pc a {
  color: var(--c-text); padding: 8px 14px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
}
.nav-pc a.is-active, .nav-pc a:hover {
  background: var(--c-primary); color: #fff; text-decoration: none;
}
.nav-toggle { display: none; }

@media (max-width: 768px) {
  .nav-pc { display: none; }
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border: 1px solid var(--c-border);
    border-radius: 10px; background: #fff; cursor: pointer;
  }
  .nav-mobile {
    display: none; padding: 12px 0; border-top: 1px solid var(--c-border);
  }
  .nav-mobile.is-open { display: block; }
  .nav-mobile a {
    display: block; padding: 10px 16px; color: var(--c-text);
    border-radius: 10px;
  }
  .nav-mobile a.is-active { background: var(--c-primary); color: #fff; }
}

/* ==== Hero ==== */
.hero {
  position: relative; overflow: hidden;
  background: var(--c-bg-hero);
  padding: 56px 0 72px;
}
.hero::before, .hero::after {
  content: ''; position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.7); filter: blur(2px);
}
.hero::before { width: 120px; height: 60px; top: 30px; left: 8%; }
.hero::after  { width: 200px; height: 90px; bottom: 30px; right: 6%; }
.hero-inner { position: relative; text-align: center; }
.hero-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(29, 78, 216, .08); color: var(--c-primary);
  font-size: 12px; font-weight: 700; letter-spacing: .12em;
}
.hero-title {
  margin: 18px 0 10px; font-size: clamp(28px, 5vw, 48px);
  font-weight: 900; letter-spacing: .02em; line-height: 1.2;
  color: var(--c-primary-dark);
}
.hero-title .accent {
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  margin: 12px auto 28px; max-width: 600px;
  color: var(--c-text-soft); font-size: 15px;
}
.hero-cta { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* ==== Buttons ==== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  font-weight: 700; font-size: 14px; cursor: pointer;
  border: 1px solid transparent; transition: transform .1s, box-shadow .15s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-dark) 100%);
  box-shadow: var(--shadow-md);
}
.btn--primary:hover { box-shadow: var(--shadow-lg); }
.btn--secondary {
  color: var(--c-primary); background: #fff; border-color: var(--c-border);
}
.btn--blue {
  color: #fff;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  box-shadow: var(--shadow-md);
}
.btn--ghost {
  color: var(--c-text); background: transparent; border-color: var(--c-border);
}
.btn--block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: .5; pointer-events: none; }

/* ==== Stats ==== */
.stats {
  display: grid; gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: -36px; position: relative; z-index: 2;
}
.stat-card {
  background: #fff; border-radius: var(--radius-md); padding: 18px 20px;
  box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 14px;
}
.stat-card__label { color: var(--c-text-soft); font-size: 12px; }
.stat-card__value { font-size: 24px; font-weight: 800; color: var(--c-primary-dark); }
.stat-card__icon {
  width: 40px; height: 40px; border-radius: 12px;
  background: rgba(29, 78, 216, .08); color: var(--c-primary);
  display: grid; place-items: center; font-size: 20px;
}
@media (max-width: 640px) { .stats { grid-template-columns: 1fr; } }

/* ==== Sections ==== */
.section { padding: 56px 0; }
.section-head {
  display: flex; align-items: end; justify-content: space-between;
  margin-bottom: 22px; flex-wrap: wrap; gap: 8px;
}
.section-head h2 {
  margin: 0; font-size: 24px; font-weight: 900; color: var(--c-primary-dark);
}
.section-head h2 small {
  display: block; font-size: 11px; color: var(--c-text-soft);
  letter-spacing: .18em; margin-top: 4px;
}
.section-head a { font-weight: 600; font-size: 14px; }

/* ==== Cards ==== */
.cards {
  display: grid; gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .cards, .cards--2 { grid-template-columns: 1fr; } }

.card {
  background: var(--c-card); border-radius: var(--radius-md);
  padding: 20px; box-shadow: var(--shadow-sm);
  border: 1px solid #f1f5f9;
  transition: transform .15s, box-shadow .15s;
  display: flex; flex-direction: column; gap: 12px;
}
.card:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-md);
  border-color: var(--c-primary-light);
  text-decoration: none;
}
.card__title { font-weight: 800; font-size: 16px; color: var(--c-text); }
.card__excerpt { color: var(--c-text-soft); font-size: 13px; }
.card__meta {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px; border-top: 1px solid #f1f5f9;
  font-size: 12px; color: var(--c-text-soft);
}

/* ==== Badges ==== */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: .04em;
  background: #eef2ff; color: var(--c-primary-dark);
}
.badge--reviewing   { background: #fef3c7; color: #92400e; }
.badge--open        { background: #dbeafe; color: #1e40af; }
.badge--considering { background: #ede9fe; color: #5b21b6; }
.badge--responded   { background: #d1fae5; color: #065f46; }
.badge--closed      { background: #e5e7eb; color: #374151; }
.badge--draft       { background: #f3f4f6; color: #6b7280; }

/* ==== Progress ==== */
.progress {
  width: 100%; height: 8px; background: #e5e7eb; border-radius: 999px; overflow: hidden;
}
.progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  border-radius: 999px;
}
.progress--accent .progress__bar {
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent-dark) 100%);
}
.progress-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--c-text-soft); margin-bottom: 6px;
}
.progress-meta strong { color: var(--c-primary-dark); font-size: 16px; }

/* ==== Roadmap ==== */
.roadmap {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  border-radius: var(--radius-lg); padding: 44px 28px; color: #fff;
  text-align: center; position: relative; overflow: hidden;
}
.roadmap::before {
  content: ''; position: absolute; right: 24px; top: 24px; font-size: 48px;
  opacity: .2;
}
.roadmap h2 {
  margin: 0; font-size: 28px; font-weight: 900;
  font-family: 'Hiragino Mincho ProN', 'Yu Mincho', YuMincho, serif;
}
.roadmap h2 small {
  display: block; font-size: 11px; letter-spacing: .24em; margin-top: 6px;
  opacity: .8; font-weight: 400;
}
.roadmap-steps {
  margin-top: 32px; display: grid; gap: 14px;
  grid-template-columns: repeat(4, 1fr);
}
.step {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-md); padding: 18px;
}
.step__num {
  font-family: 'Hiragino Mincho ProN', serif;
  font-size: 32px; font-weight: 900; opacity: .6;
}
.step__title { font-weight: 800; margin-top: 4px; }
.step__desc  { font-size: 12px; opacity: .8; margin-top: 6px; }
@media (max-width: 768px) { .roadmap-steps { grid-template-columns: 1fr 1fr; } }

/* ==== Filter Bar ==== */
.filter-bar {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  background: #fff; padding: 14px 16px; border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); margin-bottom: 22px;
}
.filter-bar select, .filter-bar input {
  appearance: none; padding: 8px 12px; border-radius: 10px;
  border: 1px solid var(--c-border); background: #fff;
  font-size: 13px; font-family: inherit;
}
.filter-bar label {
  font-size: 12px; color: var(--c-text-soft); font-weight: 600; margin-right: 4px;
}

/* ==== Proposal Detail ==== */
.detail-hero {
  background: #fff; border-radius: var(--radius-lg); padding: 28px;
  box-shadow: var(--shadow-sm); border: 1px solid #f1f5f9;
}
.detail-hero h1 {
  font-size: 26px; font-weight: 900; margin: 6px 0 16px; color: var(--c-primary-dark);
}
.detail-section {
  background: #fff; border-radius: var(--radius-md); padding: 24px;
  box-shadow: var(--shadow-sm); border: 1px solid #f1f5f9; margin-top: 20px;
}
.detail-section h3 {
  margin: 0 0 12px; font-size: 16px; color: var(--c-primary-dark);
  border-left: 4px solid var(--c-accent); padding-left: 10px;
}

/* ==== Status Timeline ==== */
.timeline {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 16px 0 24px;
}
.timeline__step {
  text-align: center; padding: 8px 4px; border-radius: 10px;
  background: #f1f5f9; color: var(--c-text-soft); font-size: 12px; font-weight: 600;
  position: relative;
}
.timeline__step.is-active { background: var(--c-primary); color: #fff; }
.timeline__step.is-passed { background: #dbeafe; color: var(--c-primary-dark); }
@media (max-width: 640px) { .timeline { font-size: 10px; } }

/* ==== Comments ==== */
.comment {
  padding: 14px 0; border-bottom: 1px solid #f1f5f9;
}
.comment:last-child { border-bottom: 0; }
.comment__head {
  display: flex; gap: 10px; align-items: center; margin-bottom: 6px;
  font-size: 13px;
}
.comment__avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-light), var(--c-primary));
  color: #fff; display: grid; place-items: center; font-weight: 700;
}
.comment__name { font-weight: 700; }
.comment__time { color: var(--c-text-soft); font-size: 11px; }
.comment__body { color: var(--c-text); font-size: 14px; white-space: pre-wrap; }

/* ==== Gov response ==== */
.gov-response {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfeff 100%);
  border: 1px solid #a7f3d0; border-radius: var(--radius-md); padding: 24px;
  margin-top: 20px;
}
.gov-response__category {
  display: inline-flex; padding: 4px 14px; border-radius: 999px;
  background: var(--c-success); color: #fff; font-weight: 700; font-size: 12px;
  letter-spacing: .04em;
}
.gov-response__body { white-space: pre-wrap; margin-top: 12px; line-height: 1.8; }

/* ==== Footer ==== */
.site-footer {
  margin-top: 72px; background: #fff; border-top: 1px solid var(--c-border);
}
.footer-inner {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px;
  padding: 40px 0;
}
.footer-inner h4 {
  margin: 0 0 14px; font-size: 12px; color: var(--c-accent-dark); letter-spacing: .12em;
}
.footer-inner ul { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.footer-inner ul li { margin-bottom: 8px; }
.footer-inner ul a { color: var(--c-text); }
.footer-copy {
  text-align: center; padding: 18px; font-size: 11px; color: var(--c-text-soft);
  border-top: 1px solid var(--c-border);
}
@media (max-width: 768px) { .footer-inner { grid-template-columns: 1fr; gap: 24px; } }

/* ==== Misc ==== */
.muted { color: var(--c-text-soft); }
.empty { padding: 40px; text-align: center; color: var(--c-text-soft); }
.flash {
  padding: 12px 16px; border-radius: 10px; margin-bottom: 16px;
  background: #ecfeff; color: #155e75; border: 1px solid #a5f3fc;
}
.flash--error { background: #fee2e2; color: #991b1b; border-color: #fecaca; }