:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #f4f7fc;
  --surface-soft: #fbfcff;
  --border: #d6deea;
  --line-soft: #e7edf6;
  --text: #17202f;
  --muted: #657186;

  --navy: #16263f;
  --navy-strong: #0f1b30;
  --navy-soft: #e8eef8;
  --blue: #255fcb;
  --blue-soft: #dce9ff;

  --gold: #c99b2f;
  --gold-soft: #fff5d9;
  --silver: #8b98ab;
  --silver-soft: #eef2f7;
  --bronze: #9a6035;
  --bronze-soft: #f8e9df;

  --success: #148245;
  --success-soft: #ddf8e8;
  --warning: #c96b16;
  --warning-soft: #fff0dd;
  --danger: #c43333;
  --danger-soft: #fde6e6;

  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);

  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;

  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 56px;

  --font-xs: 11px;
  --font-sm: 12px;
  --font-md: 14px;
  --font-lg: 16px;
  --font-xl: 20px;
  --font-2xl: 28px;

  --line: 1.5;
  --header-height: 82px;
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: var(--line);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
}

img {
  display: block;
  max-width: 100%;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.l-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.l-container {
  width: min(1440px, calc(100% - 32px));
  margin-inline: auto;
}

.l-stack {
  display: grid;
  gap: var(--space-4);
}

.l-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.l-main {
  display: grid;
  gap: var(--space-5);
}

.l-main--admin {
  grid-template-columns: 340px minmax(0, 1fr);
  align-items: start;
}

.c-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.c-header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: 10px;
}

.c-brand {
  display: grid;
  gap: 4px;
}

.c-brand__eyebrow {
  font-size: var(--font-sm);
  color: var(--muted);
  font-weight: 800;
}

.c-brand__title {
  margin: 0;
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.c-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  color: var(--muted);
  font-size: var(--font-sm);
}

.c-page-section {
  padding: var(--space-5) 0 var(--space-7);
}

.c-card,
.c-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.c-card--hero {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border-color: #d7e2f0;
}

.c-card--inner {
  box-shadow: none;
  border-radius: var(--radius-lg);
}

.c-card__body,
.c-panel__body {
  padding: var(--space-5);
}

.c-panel__head {
  padding: var(--space-5) var(--space-5) 0;
}

.c-card__title {
  margin-bottom: 6px;
  font-size: var(--font-xl);
  font-weight: 900;
  color: var(--navy);
}

.c-card__sub {
  margin-bottom: 0;
  color: var(--muted);
  font-size: var(--font-md);
}

.c-subsection {
  display: grid;
  gap: 14px;
  padding-top: 2px;
}

.c-subsection__title {
  margin: 0;
  font-size: 17px;
  font-weight: 900;
  color: var(--navy);
}

.c-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  box-shadow: var(--shadow-sm);
}

.c-button:hover {
  transform: translateY(-1px);
}

.c-button--primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

.c-button--success {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

.c-button--ghost {
  background: transparent;
  box-shadow: none;
}

.c-chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  font-size: var(--font-sm);
  font-weight: 900;
}

.c-chip.is-live {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: #ffd6af;
}

.c-chip.is-done {
  background: var(--success-soft);
  color: var(--success);
  border-color: #c8efda;
}

.c-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  color: var(--muted);
  font-size: var(--font-md);
}

.c-info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.c-info-grid--hero .c-info-box {
  background: rgba(255,255,255,0.92);
}

.c-info-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
}

.c-info-box__label {
  color: var(--muted);
  font-size: var(--font-sm);
  margin-bottom: 4px;
}

.c-info-box__value {
  font-size: var(--font-lg);
  font-weight: 900;
  color: var(--navy);
}

.c-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.c-toolbar__actions {
  justify-content: flex-end;
}

.c-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.c-tab {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-weight: 800;
  cursor: pointer;
}

.c-tab.is-active {
  background: var(--navy-soft);
  color: var(--navy);
  border-color: #bfd0eb;
}

.c-input,
.c-select,
.c-textarea {
  width: 100%;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}

.c-textarea {
  min-height: 120px;
  padding-block: 12px;
  resize: vertical;
}

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

.c-field--full {
  grid-column: 1 / -1;
}

.c-field__label {
  font-size: var(--font-sm);
  color: var(--muted);
  font-weight: 800;
}

.c-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

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

.c-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.c-radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
}

.c-bracket-hint {
  color: var(--muted);
  font-size: var(--font-sm);
  font-weight: 800;
}

.c-bracket-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.c-bracket {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(290px, 290px);
  gap: var(--space-6);
  align-items: start;
  min-width: max-content;
  padding: var(--space-2) 2px;
}

.c-bracket__round {
  display: grid;
  gap: var(--space-4);
}

.c-bracket__round-title {
  margin: 0;
  font-size: var(--font-sm);
  color: var(--muted);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: sticky;
  top: calc(var(--header-height) + 12px);
  background: var(--surface);
  padding-bottom: 8px;
  z-index: 1;
}

.c-match {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 12px;
  display: grid;
  gap: 12px;
}

.c-match--judo {
  border-left: 5px solid #d9e4f2;
}

.c-match--champion {
  border-left-color: var(--gold);
  background: linear-gradient(180deg, #ffffff 0%, #fffdf5 100%);
}

.c-match__head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: var(--font-sm);
}

.c-match__status {
  font-weight: 900;
}

.c-match__status--muted {
  color: var(--muted);
}

.c-match.is-done {
  border-color: #d2e4da;
}

.c-match.is-done .c-match__status {
  color: var(--success);
}

.c-match.is-live {
  border-color: #f5d7b8;
}

.c-match.is-live .c-match__status {
  color: var(--warning);
}

.c-match__rows {
  display: grid;
  gap: 8px;
}

.c-player {
  display: grid;
  gap: 3px;
  padding: 12px;
  border-radius: 12px;
  background: var(--surface-alt);
  border: 1px solid transparent;
}

.c-player.is-winner {
  background: var(--blue-soft);
  border-color: #bfd2fb;
}

.c-player__name {
  font-weight: 900;
  color: var(--navy);
}

.c-player__meta {
  font-size: var(--font-sm);
  color: var(--muted);
}

.c-result {
  display: grid;
  gap: 6px;
  padding-top: 4px;
  border-top: 1px dashed var(--line-soft);
}

.c-result__line {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 8px;
  align-items: start;
}

.c-result__label {
  font-size: var(--font-sm);
  color: var(--muted);
  font-weight: 800;
}

.c-result__value {
  font-size: var(--font-md);
  font-weight: 800;
}

.c-match--offset-1 { margin-top: 60px; }
.c-match--offset-2 { margin-top: 152px; }
.c-match--offset-3 { margin-top: 280px; }

.c-ranking-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.c-ranking-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: #fff;
}

.c-ranking-card.is-gold {
  background: var(--gold-soft);
  border-color: #ead59b;
}

.c-ranking-card.is-silver {
  background: var(--silver-soft);
  border-color: #d7dde8;
}

.c-ranking-card.is-bronze {
  background: var(--bronze-soft);
  border-color: #e6c7b1;
}

.c-ranking-card__place {
  font-size: var(--font-sm);
  color: var(--muted);
  font-weight: 900;
}

.c-ranking-card__name {
  font-size: var(--font-lg);
  font-weight: 900;
  color: var(--navy);
}

.c-ranking-card__meta {
  color: var(--muted);
  font-size: var(--font-sm);
}

.c-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 16px);
}

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

.c-list-item {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #fff;
}

.c-list-item.is-selected {
  border-color: #b9cbef;
  background: #f7fbff;
}

.c-list-item__title {
  font-weight: 900;
  color: var(--navy);
}

.c-list-item__meta {
  color: var(--muted);
  font-size: var(--font-sm);
}

.c-admin-match {
  display: grid;
  gap: var(--space-4);
}

.c-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.c-preview-item {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-alt);
}

.c-preview-item__label {
  font-size: var(--font-sm);
  color: var(--muted);
  margin-bottom: 4px;
}

.c-preview-item__value {
  font-weight: 800;
}

.c-mini-ranking {
  display: grid;
  gap: 10px;
}

.c-mini-ranking__item {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--surface-alt);
}

.c-mobile-bar {
  display: none;
}

.c-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: #fff;
}

.c-footer__inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  color: var(--muted);
  font-size: var(--font-sm);
}

.u-mobile-only {
  display: none !important;
}

.u-desktop-only {
  display: initial !important;
}

@media (max-width: 1150px) {
  .l-main--admin {
    grid-template-columns: 1fr;
  }

  .c-sidebar {
    position: static;
  }

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

@media (max-width: 768px) {
  :root { --header-height: 68px; }

  .l-container {
    width: min(100% - 20px, 100%);
  }

  .c-header__inner {
    min-height: var(--header-height);
    align-items: flex-start;
  }

  .c-card__body,
  .c-panel__body {
    padding: 16px;
  }

  .c-panel__head {
    padding: 16px 16px 0;
  }

  .c-toolbar {
    align-items: stretch;
  }

  .c-toolbar__actions {
    width: 100%;
    justify-content: stretch;
  }

  .c-toolbar__actions .c-select,
  .c-toolbar__actions .c-input {
    width: 100%;
  }

  .c-info-grid,
  .c-form-grid,
  .c-preview-grid,
  .c-ranking-grid {
    grid-template-columns: 1fr;
  }

  .c-bracket {
    grid-auto-columns: minmax(250px, 250px);
    gap: 18px;
  }

  .c-bracket__round-title {
    top: calc(var(--header-height) + 8px);
  }

  .c-match--offset-1,
  .c-match--offset-2,
  .c-match--offset-3 {
    margin-top: 0;
  }

  .u-desktop-only {
    display: none !important;
  }

  .u-mobile-only {
    display: initial !important;
  }

  .c-mobile-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    position: sticky;
    bottom: 12px;
    z-index: 30;
  }

  .c-mobile-bar .c-button {
    min-height: 48px;
    border-radius: 14px;
  }
}

@media (max-width: 520px) {
  .c-brand__title {
    font-size: 20px;
  }

  .c-breadcrumb,
  .c-meta,
  .c-radio-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .c-footer__inner {
    min-height: auto;
    padding: 16px 0;
  }
}