/*
 * DuoShift Design System – Tokens
 * Phase 1: CSS Custom Properties (Design Tokens)
 *
 * Usage: import AFTER reset, BEFORE component styles.
 * All values reference these tokens – never use raw hex/px in components.
 *
 * "Every match, a new partner."
 */

/* ─── Fonts (loaded via <link> in layout.html for parallel loading) ──────── */

/* ─── Root Tokens ─────────────────────────────────────────────────────────── */
:root {

  /* Backgrounds */
  --ds-bg-base:     #0F1117;   /* Page background – near-black, not pure #000 */
  --ds-bg-surface:  #1A1D27;   /* Cards, panels, sidebars */
  --ds-bg-elevated: #22263A;   /* Hover states, active elements */
  --ds-bg-overlay:  #2D3149;   /* Dropdowns, modals */

  /* Borders */
  --ds-border:        #2D3149;
  --ds-border-subtle: #1E2235;

  /* Text */
  --ds-text-primary:   #F1F5F9;  /* Slate 100 – warm-white, not pure #fff */
  --ds-text-secondary: #94A3B8;  /* Slate 400 */
  --ds-text-muted:     #475569;  /* Slate 600 – hints, instructions */
  --ds-text-inverse:   #0F1117;  /* For text on accent backgrounds */

  /* Brand Accent – Emerald */
  --ds-accent:        #6EE7B7;                    /* Emerald 300 */
  --ds-accent-dim:    #34D399;                    /* Emerald 400 – hover */
  --ds-accent-dark:   #059669;                    /* Emerald 600 – pressed */
  --ds-accent-bg:     rgba(110, 231, 183, 0.10);  /* Subtle tint */
  --ds-accent-ring:   rgba(110, 231, 183, 0.20);  /* Focus ring */
  --ds-accent-border: rgba(110, 231, 183, 0.35);  /* Stronger border (FAB, nav hover) */

  /* Identity / "Me" – Cyan (distinct from wins, distinct from gold rank 1) */
  --ds-user:      #22D3EE;                    /* Cyan 400 */
  --ds-user-bg:   rgba(34, 211, 238, 0.10);   /* Cyan tint */
  --ds-user-ring: rgba(34, 211, 238, 0.25);   /* Focus / border ring */

  /* Semantic – Win */
  --ds-win:     #34D399;                   /* Emerald 400 */
  --ds-win-bg:  rgba(52, 211, 153, 0.12);

  /* Semantic – Loss */
  --ds-loss:    #F87171;                    /* Red 400 */
  --ds-loss-bg: rgba(248, 113, 113, 0.10);

  /* Semantic – Draw */
  --ds-draw:    #FBBF24;                  /* Amber 400 */
  --ds-draw-bg: rgba(251, 191, 36, 0.10);

  /* Semantic – Pending */
  --ds-pending:    #94A3B8;
  --ds-pending-bg: rgba(148, 163, 184, 0.08);

  /* Typography – Families */
  --ds-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ds-font-mono: 'JetBrains Mono', 'Fira Mono', 'Cascadia Code', monospace;

  /* Typography – Scale (Minor Third ×1.25) */
  --ds-text-xs:   0.75rem;    /* 12px – captions, labels */
  --ds-text-sm:   0.875rem;   /* 14px – secondary text, match numbers */
  --ds-text-base: 1rem;       /* 16px – body default */
  --ds-text-lg:   1.25rem;    /* 20px – player names in cards */
  --ds-text-xl:   1.5rem;     /* 24px – section headings */
  --ds-text-2xl:  2rem;       /* 32px – page titles */
  --ds-text-3xl:  3rem;       /* 48px – hero headline */

  /* Typography – Weights */
  --ds-weight-normal:   400;
  --ds-weight-medium:   500;
  --ds-weight-semibold: 600;
  --ds-weight-bold:     700;

  /* Typography – Line Heights */
  --ds-leading-tight:  1.2;
  --ds-leading-snug:   1.375;
  --ds-leading-normal: 1.5;
  --ds-leading-relaxed: 1.625;

  /* Typography – Letter Spacing */
  --ds-tracking-tight:  -0.02em;   /* Large headings */
  --ds-tracking-normal:  0em;
  --ds-tracking-wide:    0.04em;   /* Uppercase labels */
  --ds-tracking-widest:  0.08em;   /* Micro labels (e.g. "GAME 3") */

  /* Spacing – 8px Grid */
  --ds-space-0:  0;
  --ds-space-1:  0.25rem;   /*  4px */
  --ds-space-2:  0.5rem;    /*  8px */
  --ds-space-3:  0.75rem;   /* 12px */
  --ds-space-4:  1rem;      /* 16px */
  --ds-space-5:  1.25rem;   /* 20px */
  --ds-space-6:  1.5rem;    /* 24px */
  --ds-space-8:  2rem;      /* 32px */
  --ds-space-10: 2.5rem;    /* 40px */
  --ds-space-12: 3rem;      /* 48px */
  --ds-space-16: 4rem;      /* 64px */
  --ds-space-20: 5rem;      /* 80px */
  --ds-space-24: 6rem;      /* 96px */
  --ds-space-30: 7.5rem;

  /* Touch Targets – WCAG 2.5.5 */
  --ds-touch-min: 2.75rem;  /* 44px – minimum */
  --ds-touch-comfortable: 3rem; /* 48px – comfortable */

  /* Border Radius – Sharp & Clean philosophy */
  --ds-radius-sm:   4px;    /* Status badges, small chips */
  --ds-radius-md:   8px;    /* Input fields */
  --ds-radius-lg:   12px;   /* Cards, panels */
  --ds-radius-xl:   16px;   /* Large containers */
  --ds-radius-full: 9999px; /* Pills only */

  /* Shadows – Depth without neon glow */
  --ds-shadow-sm:     0 1px 2px rgba(0, 0, 0, 0.40);
  --ds-shadow-md:     0 2px 8px rgba(0, 0, 0, 0.50);
  --ds-shadow-lg:     0 4px 24px rgba(0, 0, 0, 0.60);
  --ds-shadow-accent: 0 0 0 1px var(--ds-accent-ring);

  /* Transitions */
  --ds-duration-fast:   120ms;
  --ds-duration-base:   200ms;
  --ds-duration-slow:   350ms;
  --ds-ease:            ease;
  --ds-ease-out:        cubic-bezier(0.0, 0.0, 0.2, 1);
  --ds-ease-in-out:     cubic-bezier(0.4, 0.0, 0.2, 1);

  /* Z-Index Stack */
  --ds-z-below:   -1;
  --ds-z-base:     0;
  --ds-z-raised:  10;
  --ds-z-dropdown: 100;
  --ds-z-sticky:   200;
  --ds-z-modal:    300;
  --ds-z-toast:    400;

  /* Layout */
  --ds-content-max:     72rem;   /* 1152px – max content width */
  --ds-content-narrow:  40rem;   /* 640px  – forms, single-column pages */
  --ds-nav-height:      3.5rem;  /* 56px – navbar height */

  /* Component Tokens */
  --ds-card-padding:    var(--ds-space-6);
  --ds-card-bg:         var(--ds-bg-surface);
  --ds-card-border:     var(--ds-border-subtle);
  --ds-card-radius:     var(--ds-radius-lg);
  --ds-card-shadow:     var(--ds-shadow-md);

  --ds-input-height:    var(--ds-touch-comfortable);
  --ds-input-padding-x: var(--ds-space-4);
  --ds-input-bg:        var(--ds-bg-elevated);
  --ds-input-border:    var(--ds-border);
  --ds-input-radius:    var(--ds-radius-md);
  --ds-input-text:      var(--ds-text-primary);
  --ds-input-placeholder: var(--ds-text-muted);

  --ds-btn-height:       var(--ds-touch-comfortable);
  --ds-btn-padding-x:    var(--ds-space-6);
  --ds-btn-radius:       6px;
  --ds-btn-font-weight:  var(--ds-weight-semibold);

  /* Glass / blurred backdrop surfaces – rgba can't reference vars, so tokenized */
  --ds-bg-glass:       rgba(15, 17, 23, 0.90);   /* Sticky nav */
  --ds-bg-glass-heavy: rgba(15, 17, 23, 0.97);   /* Mobile nav, sticky headers */
  --ds-bg-fab:         rgba(22, 26, 38, 0.97);   /* FAB pill */
  --ds-bg-modal-scrim: rgba(0, 0, 0, 0.75);      /* Modal backdrop */
}

/* ─── Base Styles ──────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: clip; /* clip ≠ hidden: kein scroll-container → sticky bleibt funktional */
}

body {
  font-family: var(--ds-font-sans);
  font-size: var(--ds-text-base);
  font-weight: var(--ds-weight-normal);
  line-height: var(--ds-leading-normal);
  color: var(--ds-text-primary);
  background-color: var(--ds-bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100dvh;
  overflow-x: clip;
}

/* ─── Typography Utilities ────────────────────────────────────────────────── */
.ds-h1 {
  font-size: var(--ds-text-3xl);
  font-weight: var(--ds-weight-bold);
  line-height: var(--ds-leading-tight);
  letter-spacing: var(--ds-tracking-tight);
  color: var(--ds-text-primary);
}

.ds-h2 {
  font-size: var(--ds-text-2xl);
  font-weight: var(--ds-weight-bold);
  line-height: var(--ds-leading-tight);
  letter-spacing: var(--ds-tracking-tight);
  color: var(--ds-text-primary);
}

.ds-h3 {
  font-size: var(--ds-text-xl);
  font-weight: var(--ds-weight-semibold);
  line-height: var(--ds-leading-snug);
  color: var(--ds-text-primary);
}

.ds-h4 {
  font-size: var(--ds-text-lg);
  font-weight: var(--ds-weight-semibold);
  line-height: var(--ds-leading-snug);
  color: var(--ds-text-primary);
}

.ds-label {
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-weight-semibold);
  letter-spacing: var(--ds-tracking-widest);
  text-transform: uppercase;
  color: var(--ds-text-muted);
}

.ds-mono {
  font-family: var(--ds-font-mono);
  font-variant-numeric: tabular-nums;
}

/* ─── Navigation ──────────────────────────────────────────────────────────── */
.ds-nav {
  position: sticky;
  top: 0;
  height: var(--ds-nav-height);
  background-color: var(--ds-bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ds-border-subtle);
  display: flex;
  align-items: center;
  padding: 0 var(--ds-space-6);
  z-index: var(--ds-z-sticky);
  gap: var(--ds-space-8);
}

.ds-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--ds-space-2);
  text-decoration: none;
  color: var(--ds-text-primary);
  flex-shrink: 0;
}

.ds-nav__brand-text {
  font-size: var(--ds-text-base);
  font-weight: var(--ds-weight-bold);
  color: var(--ds-text-primary);
  letter-spacing: -0.01em;
}

.ds-nav__brand-text span {
  color: var(--ds-accent);
}

.ds-nav__links {
  display: flex;
  align-items: center;
  gap: var(--ds-space-1);
  list-style: none;
  flex: 1;
}

.ds-nav__link {
  padding: var(--ds-space-2) var(--ds-space-3);
  border-radius: var(--ds-radius-md);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-weight-medium);
  color: var(--ds-text-secondary);
  text-decoration: none;
  transition: color var(--ds-duration-fast) var(--ds-ease),
              background-color var(--ds-duration-fast) var(--ds-ease);
  white-space: nowrap;
}

.ds-nav__link:hover {
  color: var(--ds-text-primary);
  background-color: var(--ds-bg-elevated);
}

.ds-nav__link:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
  color: var(--ds-text-primary);
}

.ds-nav__link--active {
  color: var(--ds-accent);
  background-color: var(--ds-accent-bg);
}

/* ─── Mobile Nav Burger + Panel ───────────────────────────────────────────── */
.ds-nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ds-text-primary);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  border-radius: var(--ds-radius-sm);
  transition: background-color var(--ds-duration-fast) var(--ds-ease);
}

.ds-nav__burger:hover {
  background-color: var(--ds-bg-elevated);
}

.ds-nav__burger:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

.ds-nav__mobile {
  display: none;
  position: fixed;
  top: var(--ds-nav-height);
  left: 0;
  right: 0;
  background: var(--ds-bg-glass-heavy);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ds-border-subtle);
  padding: var(--ds-space-3) var(--ds-space-4) var(--ds-space-4);
  z-index: var(--ds-z-sticky);
}

.ds-nav__mobile--open {
  display: block;
}

.ds-nav__mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-1);
}

.ds-nav__mobile-links .ds-nav__link {
  display: block;
  padding: var(--ds-space-3) var(--ds-space-3);
  font-size: var(--ds-text-base);
}

/* ─── Buttons ─────────────────────────────────────────────────────────────── */
.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  height: var(--ds-btn-height);
  padding: 0 var(--ds-btn-padding-x);
  border-radius: var(--ds-btn-radius);
  font-family: var(--ds-font-sans);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-btn-font-weight);
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--ds-duration-fast) var(--ds-ease),
              color var(--ds-duration-fast) var(--ds-ease),
              border-color var(--ds-duration-fast) var(--ds-ease),
              box-shadow var(--ds-duration-fast) var(--ds-ease);
  user-select: none;
  white-space: nowrap;
}

.ds-btn:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

.ds-btn--primary {
  background-color: var(--ds-accent);
  color: var(--ds-text-inverse);
  border-color: var(--ds-accent);
}

.ds-btn--primary:hover {
  background-color: var(--ds-accent-dim);
  border-color: var(--ds-accent-dim);
}

.ds-btn--primary:active {
  background-color: var(--ds-accent-dark);
}

.ds-btn--ghost {
  background-color: transparent;
  color: var(--ds-text-secondary);
  border-color: var(--ds-border);
}

.ds-btn--ghost:hover {
  background-color: var(--ds-bg-elevated);
  color: var(--ds-text-primary);
  border-color: var(--ds-border);
}

.ds-btn--accent-ghost {
  background-color: var(--ds-accent-bg);
  color: var(--ds-accent);
  border-color: transparent;
}

.ds-btn--accent-ghost:hover {
  background-color: rgba(110, 231, 183, 0.18);
}

.ds-btn--lg {
  height: 3.25rem;
  padding: 0 var(--ds-space-8);
  font-size: var(--ds-text-base);
}

.ds-btn--sm {
  height: 2rem;
  padding: 0 var(--ds-space-3);
  font-size: var(--ds-text-xs);
}

/* ─── Cards ───────────────────────────────────────────────────────────────── */
.ds-card {
  background-color: var(--ds-card-bg);
  border: 1px solid var(--ds-card-border);
  border-radius: var(--ds-card-radius);
  padding: var(--ds-card-padding);
  box-shadow: var(--ds-card-shadow);
}

.ds-card--elevated {
  background-color: var(--ds-bg-elevated);
}

/* ─── Form Inputs ─────────────────────────────────────────────────────────── */
.ds-input {
  display: block;
  width: 100%;
  height: var(--ds-input-height);
  padding: 0 var(--ds-input-padding-x);
  background-color: var(--ds-input-bg);
  border: 1px solid var(--ds-input-border);
  border-radius: var(--ds-input-radius);
  color: var(--ds-input-text);
  font-family: var(--ds-font-sans);
  font-size: var(--ds-text-base);
  line-height: 1;
  transition: border-color var(--ds-duration-fast) var(--ds-ease),
              box-shadow var(--ds-duration-fast) var(--ds-ease);
  -webkit-appearance: none;
  appearance: none;
}

.ds-input::placeholder {
  color: var(--ds-input-placeholder);
}

.ds-input:focus {
  outline: none;
  border-color: var(--ds-accent);
  box-shadow: 0 0 0 3px var(--ds-accent-bg);
}

/* ─── Status Badges ───────────────────────────────────────────────────────── */
.ds-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--ds-space-2);
  border-radius: var(--ds-radius-sm);
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-weight-semibold);
  letter-spacing: var(--ds-tracking-wide);
  text-transform: uppercase;
}

.ds-badge--win {
  background-color: var(--ds-win-bg);
  color: var(--ds-win);
}

.ds-badge--loss {
  background-color: var(--ds-loss-bg);
  color: var(--ds-loss);
}

.ds-badge--draw {
  background-color: var(--ds-draw-bg);
  color: var(--ds-draw);
}

.ds-badge--pending {
  background-color: var(--ds-pending-bg);
  color: var(--ds-pending);
}

/* ─── Player Name Badge (Match Card) ─────────────────────────────────────── */
.ds-player-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--ds-space-2) var(--ds-space-4);
  border-radius: var(--ds-radius-md);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-weight-medium);
  background-color: var(--ds-bg-elevated);
  border: 1px solid var(--ds-border-subtle);
  color: var(--ds-text-primary);
  transition: background-color var(--ds-duration-fast) var(--ds-ease),
              border-color var(--ds-duration-fast) var(--ds-ease),
              color var(--ds-duration-fast) var(--ds-ease);
  min-height: var(--ds-touch-min);
  width: 100%;
}

.ds-player-badge--win {
  background-color: var(--ds-win-bg);
  border-color: rgba(52, 211, 153, 0.30);
  color: var(--ds-win);
}

.ds-player-badge--loss {
  background-color: var(--ds-loss-bg);
  border-color: rgba(248, 113, 113, 0.20);
  color: var(--ds-text-muted);
}

/* ─── Match Card ──────────────────────────────────────────────────────────── */
.ds-match-card {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-subtle);
  border-radius: var(--ds-radius-lg);
  overflow: hidden;
  box-shadow: var(--ds-shadow-sm);
  transition: box-shadow var(--ds-duration-base) var(--ds-ease);
}

.ds-match-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--ds-space-3) var(--ds-space-4);
  border-bottom: 1px solid var(--ds-border-subtle);
}

.ds-match-card__number {
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-weight-semibold);
  letter-spacing: var(--ds-tracking-widest);
  text-transform: uppercase;
  color: var(--ds-text-muted);
}

.ds-match-card__body {
  padding: var(--ds-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
}

.ds-match-card__team {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
  padding: var(--ds-space-3);
  border-radius: var(--ds-radius-md);
  cursor: pointer;
  transition: background-color var(--ds-duration-fast) var(--ds-ease);
  -webkit-tap-highlight-color: transparent;
  border: 1px solid transparent;
}

.ds-match-card__team:hover {
  background-color: var(--ds-bg-elevated);
}

.ds-match-card__team--win {
  background-color: var(--ds-win-bg);
  border-color: rgba(52, 211, 153, 0.20);
}

.ds-match-card__team--loss {
  background-color: rgba(148, 163, 184, 0.05);
  border-color: transparent;
}

.ds-match-card__vs {
  text-align: center;
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-weight-bold);
  letter-spacing: var(--ds-tracking-widest);
  color: var(--ds-text-muted);
  padding: var(--ds-space-1) 0;
}

.ds-match-card--complete {
  border-color: rgba(52, 211, 153, 0.15);
}

/* ─── Leaderboard ─────────────────────────────────────────────────────────── */
.ds-leaderboard {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
}

.ds-leaderboard__row {
  display: flex;
  align-items: center;
  gap: var(--ds-space-3);
  padding: var(--ds-space-3) var(--ds-space-4);
  border-radius: var(--ds-radius-md);
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-subtle);
  contain: layout;
  transition: background-color var(--ds-duration-fast) var(--ds-ease);
}

.ds-leaderboard__row--leader {
  background-color: rgba(251, 191, 36, 0.04);   /* Barely-there warm tint */
  border-color: var(--ds-border-subtle);          /* Normal border – no "champion" box */
  box-shadow: inset 3px 0 0 var(--ds-draw);       /* Gold left stripe = "currently leading" */
}

.ds-leaderboard__rank {
  font-family: var(--ds-font-mono);
  font-size: var(--ds-text-sm);
  color: var(--ds-text-muted);
  width: 1.5rem;
  text-align: center;
  flex-shrink: 0;
}

.ds-leaderboard__rank--gold {
  color: var(--ds-draw);  /* Amber – gold */
}

.ds-leaderboard__name {
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-weight-medium);
  color: var(--ds-text-primary);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ds-leaderboard__score {
  font-family: var(--ds-font-mono);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-weight-semibold);
  color: var(--ds-text-primary);
  flex-shrink: 0;
}

.ds-leaderboard__score--leader {
  color: var(--ds-draw);                         /* Gold – matches rank number */
}

/* ─── Alert / Error ───────────────────────────────────────────────────────── */
.ds-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--ds-space-3);
  padding: var(--ds-space-4);
  border-radius: var(--ds-radius-md);
  border: 1px solid;
  font-size: var(--ds-text-sm);
}

.ds-alert--warning {
  background-color: rgba(251, 191, 36, 0.10);
  border-color: rgba(251, 191, 36, 0.30);
  color: var(--ds-draw);
}

.ds-alert--error {
  background-color: var(--ds-loss-bg);
  border-color: rgba(248, 113, 113, 0.30);
  color: var(--ds-loss);
}

/* ─── Divider ─────────────────────────────────────────────────────────────── */
.ds-divider {
  border: none;
  border-top: 1px solid var(--ds-border-subtle);
  margin: var(--ds-space-6) 0;
}

/* ─── Empty State ─────────────────────────────────────────────────────────── */
.ds-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--ds-space-12) var(--ds-space-8);
  text-align: center;
  gap: var(--ds-space-3);
}

.ds-empty__icon {
  color: var(--ds-text-muted);
  opacity: 0.5;
}

.ds-empty__title {
  font-size: var(--ds-text-base);
  font-weight: var(--ds-weight-medium);
  color: var(--ds-text-secondary);
}

.ds-empty__description {
  font-size: var(--ds-text-sm);
  color: var(--ds-text-muted);
  max-width: 24rem;
  line-height: var(--ds-leading-relaxed);
}

/* ─── Layout Utilities ────────────────────────────────────────────────────── */
.ds-container {
  width: 100%;
  max-width: var(--ds-content-max);
  margin: 0 auto;
  padding: 0 var(--ds-space-6);
}

.ds-container--narrow {
  max-width: var(--ds-content-narrow);
}

.ds-page {
  padding-top: var(--ds-space-8);
  padding-bottom: var(--ds-space-16);
}

/* ─── Alerts Container ────────────────────────────────────────────────────── */
.ds-alerts {
  margin-top: var(--ds-space-4);
}

/* ─── Scroll-to-top Button ────────────────────────────────────────────────── */
.ds-scroll-top {
  position: fixed;
  bottom: var(--ds-space-8);
  right: var(--ds-space-8);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--ds-radius-md);
  background-color: var(--ds-bg-elevated);
  border: 1px solid var(--ds-border);
  color: var(--ds-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--ds-duration-base) var(--ds-ease),
              background-color var(--ds-duration-fast) var(--ds-ease);
  z-index: var(--ds-z-raised);
}

.ds-scroll-top--visible {
  opacity: 1;
}

.ds-scroll-top:hover {
  background-color: var(--ds-bg-overlay);
  color: var(--ds-text-primary);
}

/* ─── Animations ──────────────────────────────────────────────────────────── */
@keyframes ds-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ds-slide-in {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

.ds-animate-fade-in {
  animation: ds-fade-in var(--ds-duration-base) var(--ds-ease-out) both;
}

.ds-animate-slide-in {
  animation: ds-slide-in var(--ds-duration-base) var(--ds-ease-out) both;
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ─── Tournament ID Badge ─────────────────────────────────────────────────── */
.ds-tournament-id {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-2);
  padding: var(--ds-space-1) var(--ds-space-3);
  background-color: var(--ds-bg-elevated);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
}

.ds-tournament-id:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

.ds-tournament-id__label {
  font-size: var(--ds-text-xs);
  color: var(--ds-text-muted);
  font-weight: var(--ds-weight-medium);
}

.ds-tournament-id__value {
  font-family: var(--ds-font-mono);
  font-size: var(--ds-text-sm);
  color: var(--ds-text-primary);
  letter-spacing: 0.05em;
}

/* ─── Copy Button ─────────────────────────────────────────────────────────── */
.ds-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-1);
  padding: var(--ds-space-1) var(--ds-space-3);
  border-radius: var(--ds-radius-sm);
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-weight-medium);
  color: var(--ds-text-muted);
  background: transparent;
  border: 1px solid var(--ds-border);
  cursor: pointer;
  transition: all var(--ds-duration-fast) var(--ds-ease);
}

.ds-copy-btn:hover {
  color: var(--ds-text-primary);
  border-color: var(--ds-border);
  background-color: var(--ds-bg-elevated);
}

.ds-copy-btn:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

.ds-copy-btn--copied {
  color: var(--ds-win);
  border-color: rgba(52, 211, 153, 0.30);
  background-color: var(--ds-win-bg);
}

/* Ghost variant – icon-only, no border at rest (secondary actions like QR) */
.ds-copy-btn--ghost {
  border-color: transparent;
  padding: var(--ds-space-1) var(--ds-space-2);
  color: var(--ds-text-muted);
}
.ds-copy-btn--ghost:hover {
  border-color: var(--ds-border);
  color: var(--ds-text-secondary);
  background-color: var(--ds-bg-elevated);
}

/* ─── Language Switching ─────────────────────────────────────────────────── */
html[data-lang="en"] .lang-de { display: none !important; }
html[data-lang="de"] .lang-en { display: none !important; }

/* Lang toggle button in nav */
.ds-lang-toggle {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 var(--ds-space-2);
  border-radius: var(--ds-radius-sm);
  font-family: var(--ds-font-mono);
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-weight-semibold);
  color: var(--ds-text-muted);
  background: transparent;
  border: 1px solid var(--ds-border);
  cursor: pointer;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  transition: color var(--ds-duration-fast) var(--ds-ease),
              border-color var(--ds-duration-fast) var(--ds-ease),
              background-color var(--ds-duration-fast) var(--ds-ease);
}

.ds-lang-toggle:hover {
  color: var(--ds-accent);
  border-color: var(--ds-accent-border);
  background-color: var(--ds-accent-bg);
}

.ds-lang-toggle:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

/* ─── Theme Toggle ────────────────────────────────────────────────────────── */
.ds-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  width: 28px;
  border-radius: var(--ds-radius-sm);
  color: var(--ds-text-muted);
  background: transparent;
  border: 1px solid var(--ds-border);
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--ds-duration-fast) var(--ds-ease),
              border-color var(--ds-duration-fast) var(--ds-ease),
              background-color var(--ds-duration-fast) var(--ds-ease);
}

.ds-theme-toggle:hover {
  color: var(--ds-accent);
  border-color: var(--ds-accent-border);
  background-color: var(--ds-accent-bg);
}

.ds-theme-toggle:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

/* Sun shown in dark mode (click → go light), moon shown in light mode (click → go dark) */
html[data-theme="dark"]  .ds-theme-icon--moon { display: none; }
html[data-theme="light"] .ds-theme-icon--sun  { display: none; }

/* Logo arc follows the current accent so it reads well in both modes */
#icon-duoshift .ds-logo-arc { stroke: var(--ds-accent); }

/* ─── Light Mode ──────────────────────────────────────────────────────────── */
html[data-theme="light"] {
  /* Backgrounds */
  --ds-bg-base:     #F8FAFC;   /* Slate 50  */
  --ds-bg-surface:  #FFFFFF;
  --ds-bg-elevated: #F1F5F9;   /* Slate 100 */
  --ds-bg-overlay:  #E2E8F0;   /* Slate 200 */

  /* Borders */
  --ds-border:        #CBD5E1;  /* Slate 300 */
  --ds-border-subtle: #E2E8F0;  /* Slate 200 */

  /* Text */
  --ds-text-primary:   #0F172A;  /* Slate 950 */
  --ds-text-secondary: #475569;  /* Slate 600 */
  --ds-text-muted:     #94A3B8;  /* Slate 400 */
  --ds-text-inverse:   #F8FAFC;

  /* Accent – darker for AA contrast on light backgrounds */
  --ds-accent:        #059669;  /* Emerald 600 – 4.5:1 on white */
  --ds-accent-dim:    #047857;  /* Emerald 700 */
  --ds-accent-dark:   #065F46;  /* Emerald 800 */
  --ds-accent-bg:     rgba(5, 150, 105, 0.10);
  --ds-accent-ring:   rgba(5, 150, 105, 0.20);
  --ds-accent-border: rgba(5, 150, 105, 0.35);

  /* Identity / "Me" – Cyan (darker for light bg) */
  --ds-user:      #0891B2;  /* Cyan 600 */
  --ds-user-bg:   rgba(8, 145, 178, 0.10);
  --ds-user-ring: rgba(8, 145, 178, 0.30);

  /* Semantic */
  --ds-win:     #059669;  /* Emerald 600 */
  --ds-win-bg:  rgba(5, 150, 105, 0.12);
  --ds-loss:    #DC2626;  /* Red 600 */
  --ds-loss-bg: rgba(220, 38, 38, 0.10);
  --ds-draw:    #D97706;  /* Amber 600 */
  --ds-draw-bg: rgba(217, 119, 6, 0.12);
  --ds-pending:    #64748B;  /* Slate 500 */
  --ds-pending-bg: rgba(100, 116, 139, 0.10);

  /* Shadows – much softer on light */
  --ds-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --ds-shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10);
  --ds-shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.12);

  /* Glass */
  --ds-bg-glass:       rgba(248, 250, 252, 0.92);
  --ds-bg-glass-heavy: rgba(248, 250, 252, 0.98);
  --ds-bg-fab:         rgba(255, 255, 255, 0.97);
  --ds-bg-modal-scrim: rgba(0, 0, 0, 0.50);
}

/* ─── Identity Icon (shown next to "me" in standings) ─────────────────────── */
.ds-identity-icon {
  display: none;
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  color: var(--ds-user);
  margin-left: var(--ds-space-1);
  vertical-align: middle;
  position: relative;
  top: -1px;
}

.tv-identity-row--me .ds-identity-icon {
  display: inline;
}

/* ─── Mobile Responsive ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .ds-nav {
    padding: 0 var(--ds-space-4);
    gap: var(--ds-space-4);
  }

  /* Burger visible, desktop links hidden */
  .ds-nav__links  { display: none; }
  .ds-nav__burger { display: flex; }

  .ds-container {
    padding: 0 var(--ds-space-4);
  }

  .ds-h1 {
    font-size: var(--ds-text-2xl);
  }

  .ds-h2 {
    font-size: var(--ds-text-xl);
  }

  .ds-page {
    padding-top: var(--ds-space-6);
  }

  .ds-scroll-top {
    bottom: var(--ds-space-6);
    right: var(--ds-space-4);
  }
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.ds-footer {
  border-top: 1px solid var(--ds-border-subtle);
  padding: var(--ds-space-5) 0;
  margin-top: var(--ds-space-10);
}

.ds-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-4);
  flex-wrap: wrap;
}

.ds-footer__copy {
  font-size: var(--ds-text-xs);
  color: var(--ds-text-muted);
}

.ds-footer__links {
  display: flex;
  align-items: center;
  gap: var(--ds-space-4);
  list-style: none;
}

.ds-footer__link {
  font-size: var(--ds-text-xs);
  color: var(--ds-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.ds-footer__link:hover {
  color: var(--ds-text-secondary);
}