:root {
  --font-family-base: "Inter", "Segoe UI", sans-serif;
  --font-size-body: 1rem;
  --font-size-small: 0.875rem;
  --font-size-large: 1.125rem;
  --font-size-title: clamp(2rem, 3vw, 2.6rem);
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-surface-elevated: #f8fbff;
  --color-text-primary: #172033;
  --color-text-secondary: #56627a;
  --color-border: #d7dfeb;
  --color-accent: #2563eb;
  --color-accent-strong: #1d4ed8;
  --color-success: #2f9e61;
  --color-danger: #d34b5f;
  --color-muted: #6b7280;
  --color-starchips: #f59e0b;
  --color-completion-bg: linear-gradient(135deg, #dbeafe, #eff6ff);
  --color-dashboard-bg: linear-gradient(180deg, #f8fbff, #eef4fb);
  --color-hover-popover-bg: rgba(255, 255, 255, 0.95);
  --color-click-popover-bg: #ffffff;
  --color-link: #1d4ed8;

  --spacing-2xs: 0.25rem;
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  --border-radius-sm: 0.5rem;
  --border-radius-md: 0.85rem;
  --border-radius-lg: 1.25rem;
  --border-radius-pill: 999px;

  --shadow-card: 0 14px 34px rgba(15, 23, 42, 0.08);
  --shadow-popover: 0 18px 44px rgba(15, 23, 42, 0.18);
  --shadow-topbar: 0 6px 18px rgba(15, 23, 42, 0.06);

  --content-max-width: 960px;
  --card-cell-size: 2.2rem;
  --card-grid-gap: 0.35rem;
  --transition-fast: 160ms ease;
}

html,
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: var(--font-size-body);
}

html,
body,
#outlet {
  min-height: 100%;
}

#outlet,
vaadin-app-layout,
vaadin-app-layout::part(content) {
  background: var(--color-bg);
  color: var(--color-text-primary);
}

body.dark-mode,
:root.dark-mode {
  --color-bg: #101826;
  --color-surface: #162132;
  --color-surface-elevated: #1c2940;
  --color-text-primary: #edf2ff;
  --color-text-secondary: #aeb9cf;
  --color-border: #2b3a55;
  --color-accent: #60a5fa;
  --color-accent-strong: #93c5fd;
  --color-success: #4cc37b;
  --color-danger: #ff6b7b;
  --color-muted: #7f8aa3;
  --color-starchips: #ffbf47;
  --color-completion-bg: linear-gradient(135deg, #1e3a5f, #19304f);
  --color-dashboard-bg: linear-gradient(180deg, #182438, #152033);
  --color-hover-popover-bg: rgba(25, 37, 57, 0.95);
  --color-click-popover-bg: #1a2740;
  --color-link: #93c5fd;
  --shadow-card: 0 18px 36px rgba(0, 0, 0, 0.28);
  --shadow-popover: 0 22px 48px rgba(0, 0, 0, 0.42);
  --shadow-topbar: 0 10px 22px rgba(0, 0, 0, 0.25);
}

a {
  color: var(--color-link);
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
label,
li,
div {
  color: inherit;
}

/* Top Bar & Navigation */
.top-bar {
  box-sizing: border-box;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-topbar);
}

.top-bar__nav,
.top-bar__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.top-bar__nav a {
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
}

.theme-toggle,
.top-bar__login {
  border-radius: var(--border-radius-pill);
}

/* Layout & Container */
.page-container {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.content-section {
  width: 100%;
}

.section-label {
  display: inline-block;
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.team-card,
.card-grid-section,
.profile-view__field {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.team-card {
  padding: var(--spacing-lg);
}

.team-card__title,
.team-view__title,
.player-view__title {
  margin-bottom: var(--spacing-sm);
}

.content-section h3,
.team-card h3,
.player-view h3 {
  color: var(--color-text-primary);
}

.activity-list,
.player-view__updates {
  margin: var(--spacing-sm) 0 0;
  padding-left: 1.2rem;
  color: var(--color-text-primary);
}

/* Dashboard Stats Bar */
.dashboard-stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin: var(--spacing-sm) 0 var(--spacing-md);
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-dashboard-bg);
}

/* Stat Chips */
.stat-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-pill);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
}

/* Completion Banner */
.completion-banner {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid color-mix(in srgb, var(--color-accent) 20%, var(--color-border));
  border-radius: var(--border-radius-md);
  background: var(--color-completion-bg);
  color: var(--color-text-primary);
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-bold);
}

.completion-banner vaadin-icon {
  color: var(--color-starchips);
}

/* Card Grid */
.card-grid-section {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: var(--card-grid-gap);
  max-width: 520px;
  margin-top: var(--spacing-sm);
}

/* Card Cells */
.card-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--card-cell-size);
  border-radius: var(--border-radius-sm);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  user-select: none;
  transition: transform var(--transition-fast), filter var(--transition-fast), box-shadow var(--transition-fast);
}

.card-cell:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.card-cell--unobtainable {
  background: var(--color-muted);
}

.card-cell--acquired {
  background: var(--color-success);
}

.card-cell--unacquired {
  background: var(--color-danger);
}

/* Card Popover (client-side) */
.card-popover {
  position: fixed;
  inset: auto auto auto auto;
  margin: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-popover);
  max-width: min(20rem, calc(100vw - 2rem));
}

.card-popover::backdrop {
  background: transparent;
}

.card-popover--hover {
  background: var(--color-hover-popover-bg);
  font-size: 0.82rem;
  opacity: 0.96;
  pointer-events: none;
}

.card-popover--click {
  background: var(--color-click-popover-bg);
  font-size: var(--font-size-small);
}

.card-popover__line + .card-popover__line {
  margin-top: var(--spacing-2xs);
}

/* Player View */
.player-view__team-link {
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

/* Profile View */
.profile-view {
  gap: var(--spacing-sm);
  padding: var(--spacing-xl) var(--spacing-lg);
}

.profile-view__field {
  width: min(100%, 28rem);
  padding: var(--spacing-md);
}

.profile-view__link {
  margin-top: var(--spacing-xs);
}

.profile-view__button {
  margin-top: var(--spacing-sm);
}

/* Utility Classes */
.u-hidden {
  display: none;
}

.external-link,
.admin-action-row {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Dark Mode Overrides */
body.dark-mode .card-cell {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

body.dark-mode .team-card,
body.dark-mode .card-grid-section,
body.dark-mode .profile-view__field {
  background: var(--color-surface);
}

@media (max-width: 720px) {
  .page-container {
    padding: var(--spacing-md);
  }

  .top-bar {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .card-grid {
    max-width: 100%;
  }
}