/*
 * ── Design System Tokens ──────────────────────────────
 *
 * TYPE SCALE (rem, base 16px)
 *   --text-xs    0.75rem   12px   Labels, badges, fine print
 *   --text-sm    0.85rem   ~14px  Secondary text, notes, captions
 *   --text-base  1rem      16px   Body text (default)
 *   --text-lg    1.15rem   ~18px  Subheadings, emphasized text
 *   --text-xl    1.3rem    ~21px  Section headings
 *   --text-2xl   1.6rem    ~26px  Page headings
 *   --text-3xl   2rem      32px   Hero headings
 *
 * LINE HEIGHT
 *   --leading-tight    1.15   Headings
 *   --leading-normal   1.5    Body text
 *   --leading-relaxed  1.65   Long-form content
 *
 * SPACING SCALE (4px base grid)
 *   --space-1    0.25rem   4px
 *   --space-2    0.5rem    8px
 *   --space-3    0.75rem   12px
 *   --space-4    1rem      16px
 *   --space-5    1.25rem   20px
 *   --space-6    1.5rem    24px
 *   --space-8    2rem      32px
 *   --space-10   2.5rem    40px
 *   --space-12   3rem      48px
 *   --space-16   4rem      64px
 *
 * RADIUS
 *   --radius-xs    6px    Small chips, badges
 *   --radius-sm    10px   Inputs, buttons
 *   --radius-md    12px   Cards, dropdowns
 *   --radius-lg    14px   Panels, modals
 *   --radius-pill  9999px Toggle switches, pills
 *
 * BREAKPOINTS (reference only — CSS can't use vars in @media)
 *   sm   640px    Mobile landscape / small tablet
 *   md   768px    Tablet portrait
 *   lg   1024px   Desktop / tablet landscape
 *   xl   1280px   Wide desktop
 *
 * COLOR TOKENS — see :root and [data-theme="dark"] blocks below
 *   Text:    --text (primary), --text-secondary (muted), --text-tertiary (faint), --text-disabled
 *            Legacy aliases: --muted = --text-secondary, --text-mid = --text-tertiary, --text-faint = --text-disabled
 *   Surface: --bg, --panel-bg, --surface-elevated, --surface-dim
 *   Border:  --border, --input-bg, --input-border
 *   Status:  --success, --danger, --warning, --info (with -bg, -border variants)
 *   Interactive: --accent-hover, --accent-active, --danger-hover, --surface-hover
 */

/* ── Light mode (default) ────────────────────────────── */
:root {
  color-scheme: light dark;
  font-family: 'Manrope', sans-serif;
  --font-family: 'Manrope', sans-serif;

  /* Type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.85rem;
  --text-base: 1rem;
  --text-lg: 1.15rem;
  --text-xl: 1.3rem;
  --text-2xl: 1.6rem;
  --text-3xl: 2rem;
  --leading-tight: 1.15;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  /* Spacing scale (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Radius – sharp, modern corners */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 14px;
  --radius-pill: 9999px;

  /* Breakpoints (for reference — CSS can't use vars in media queries) */
  /* --bp-sm: 640px; --bp-md: 768px; --bp-lg: 1024px; --bp-xl: 1280px; */

  /* Timing */
  --duration-fast: 120ms;
  --duration-normal: 200ms;
  --duration-slow: 350ms;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);

  /* Backgrounds */
  --bg: linear-gradient(135deg, #e7e7e7 0%, #e7e7e7 20%, #f6d4e8 60%, #ffffff 100%);
  --card-color: rgba(255, 255, 255, 0.9);
  --panel-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(248, 239, 247, 0.9));
  --panel-border: rgba(236, 72, 153, 0.16);
  --panel-shadow: 0 2px 12px rgba(212, 217, 236, 0.28);

  /* Text */
  --text: #0f172a;
  --muted: #475569;

  /* Accent – pink */
  --accent: #f39bc7;
  --accent-strong: #db2777;
  --accent-gradient: linear-gradient(135deg, #8a0045a3 0%, #f39bc7 10%, #ec4899 65%, #8a0045 100%);
  --accent-gradient-soft: linear-gradient(135deg, rgba(244, 114, 182, 0.35), rgba(190, 24, 93, 0.12));
  --accent-gradient-faint: linear-gradient(135deg, rgba(244, 114, 182, 0.22), rgba(190, 24, 93, 0.06));

  /* Ghost / Chip */
  --ghost-bg: var(--accent-gradient-faint);
  --ghost-border: rgba(236, 72, 153, 0.22);
  --shadow: 0 2px 12px rgba(212, 217, 236, 0.28);
  --chip-bg: var(--accent-gradient-faint);

  /* Surfaces */
  --surface: #ffffff;
  --surface-dim: rgba(255, 255, 255, 0.72);
  --surface-elevated: rgba(255, 255, 255, 0.92);
  --border: rgba(31, 41, 55, 0.08);
  --border-accent: rgba(236, 72, 153, 0.18);
  --input-bg: rgba(255, 255, 255, 0.9);
  --input-border: rgba(236, 72, 153, 0.18);
  --overlay: rgba(255, 255, 255, 0.75);
  --glow: rgba(236, 72, 153, 0.12);
  --glow-strong: rgba(236, 72, 153, 0.32);
  --text-secondary: var(--muted);
  --text-tertiary: rgba(31, 41, 55, 0.72);
  --text-disabled: rgba(31, 41, 55, 0.40);
  --text-on-surface: rgba(31, 41, 55, 0.92);
  --text-faint: var(--text-disabled);
  --text-mid: var(--text-tertiary);
  --line: rgba(31, 41, 55, 0.12);

  /* Semantic status */
  --success: #047857;
  --success-bg: rgba(4, 120, 87, 0.10);
  --success-border: rgba(4, 120, 87, 0.25);
  --danger: #b91c1c;
  --danger-bg: rgba(185, 28, 28, 0.08);
  --danger-border: rgba(185, 28, 28, 0.25);
  --warning: #b45309;
  --warning-bg: rgba(180, 83, 9, 0.08);
  --warning-border: rgba(180, 83, 9, 0.25);
  --info: #1d4ed8;
  --info-bg: rgba(29, 78, 216, 0.08);
  --info-border: rgba(29, 78, 216, 0.25);

  /* Interactive hover/active */
  --accent-hover: #be185d;
  --accent-active: #9d174d;
  --danger-hover: #991b1b;
  --surface-hover: rgba(0, 0, 0, 0.04);
}

/* ── Dark mode ───────────────────────────────────────── */
/* ── Dark mode tokens ────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0c0c18;
    --card-color: rgba(255, 255, 255, 0.035);
    --panel-bg: rgba(255, 255, 255, 0.04);
    --panel-border: rgba(255, 255, 255, 0.07);
    --panel-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.04);
    --text: #f1f5f9;
    --muted: #94a3b8;
    --accent: #f472b6;
    --accent-strong: #ec4899;
    --accent-gradient: linear-gradient(135deg, #be185d 0%, #ec4899 50%, #db2777 100%);
    --accent-gradient-soft: linear-gradient(135deg, rgba(236, 72, 153, 0.22), rgba(190, 24, 93, 0.08));
    --accent-gradient-faint: linear-gradient(135deg, rgba(236, 72, 153, 0.10), rgba(190, 24, 93, 0.04));
    --ghost-bg: rgba(255, 255, 255, 0.04);
    --ghost-border: rgba(255, 255, 255, 0.08);
    --shadow: 0 1px 4px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.04);
    --chip-bg: rgba(236, 72, 153, 0.08);
    --surface: rgba(255, 255, 255, 0.05);
    --surface-dim: rgba(255, 255, 255, 0.025);
    --surface-elevated: rgba(255, 255, 255, 0.045);
    --border: rgba(255, 255, 255, 0.07);
    --border-accent: rgba(255, 255, 255, 0.10);
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-border: rgba(255, 255, 255, 0.10);
    --overlay: rgba(0, 0, 0, 0.6);
    --glow: rgba(236, 72, 153, 0.06);
    --glow-strong: rgba(236, 72, 153, 0.18);
    --text-secondary: var(--muted);
    --text-tertiary: rgba(255, 255, 255, 0.60);
    --text-disabled: rgba(255, 255, 255, 0.40);
    --text-on-surface: rgba(255, 255, 255, 0.92);
    --text-faint: var(--text-disabled);
    --text-mid: var(--text-tertiary);
    --line: rgba(255, 255, 255, 0.07);
    --success: #34d399;
    --success-bg: rgba(52, 211, 153, 0.10);
    --success-border: rgba(52, 211, 153, 0.25);
    --danger: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.10);
    --danger-border: rgba(248, 113, 113, 0.25);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.10);
    --warning-border: rgba(251, 191, 36, 0.25);
    --info: #60a5fa;
    --info-bg: rgba(96, 165, 250, 0.10);
    --info-border: rgba(96, 165, 250, 0.25);
    --accent-hover: #f472b6;
    --accent-active: #ec4899;
    --danger-hover: #fca5a5;
    --surface-hover: rgba(255, 255, 255, 0.06);
  }
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c0c18;
  --card-color: rgba(255, 255, 255, 0.035);
  --panel-bg: rgba(255, 255, 255, 0.04);
  --panel-border: rgba(255, 255, 255, 0.07);
  --panel-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #f472b6;
  --accent-strong: #ec4899;
  --accent-gradient: linear-gradient(135deg, #be185d 0%, #ec4899 50%, #db2777 100%);
  --accent-gradient-soft: linear-gradient(135deg, rgba(236, 72, 153, 0.22), rgba(190, 24, 93, 0.08));
  --accent-gradient-faint: linear-gradient(135deg, rgba(236, 72, 153, 0.10), rgba(190, 24, 93, 0.04));
  --ghost-bg: rgba(255, 255, 255, 0.04);
  --ghost-border: rgba(255, 255, 255, 0.08);
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --chip-bg: rgba(236, 72, 153, 0.08);
  --surface: rgba(255, 255, 255, 0.05);
  --surface-dim: rgba(255, 255, 255, 0.025);
  --surface-elevated: rgba(255, 255, 255, 0.045);
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(255, 255, 255, 0.10);
  --input-bg: rgba(255, 255, 255, 0.05);
  --input-border: rgba(255, 255, 255, 0.10);
  --overlay: rgba(0, 0, 0, 0.6);
  --glow: rgba(236, 72, 153, 0.06);
  --glow-strong: rgba(236, 72, 153, 0.18);
  --text-secondary: var(--muted);
  --text-tertiary: rgba(255, 255, 255, 0.60);
  --text-disabled: rgba(255, 255, 255, 0.40);
  --text-on-surface: rgba(255, 255, 255, 0.92);
  --text-faint: var(--text-disabled);
  --text-mid: var(--text-tertiary);
  --line: rgba(255, 255, 255, 0.07);
  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.10);
  --success-border: rgba(52, 211, 153, 0.25);
  --danger: #f87171;
  --danger-bg: rgba(248, 113, 113, 0.10);
  --danger-border: rgba(248, 113, 113, 0.25);
  --warning: #fbbf24;
  --warning-bg: rgba(251, 191, 36, 0.10);
  --warning-border: rgba(251, 191, 36, 0.25);
  --info: #60a5fa;
  --info-bg: rgba(96, 165, 250, 0.10);
  --info-border: rgba(96, 165, 250, 0.25);
  --accent-hover: #f472b6;
  --accent-active: #ec4899;
  --danger-hover: #fca5a5;
  --surface-hover: rgba(255, 255, 255, 0.06);
}

/* ── Reset ───────────────────────────────────────────── */
* {
  box-sizing: border-box;
}

select {
  color: var(--text);
  background: var(--input-bg);
}

:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
}

:where(input, textarea, select):focus-visible {
  box-shadow: 0 0 0 4px var(--glow);
}

/* ── Icon font ───────────────────────────────────────── */
.material-symbols-rounded {
  font-family: 'Material Symbols Rounded';
  font-variation-settings: 'FILL' 0, 'wght' 500, 'GRAD' 0, 'opsz' 20;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1em;
  height: 1.1em;
  font-size: 0;
  line-height: 1;
}

.material-symbols-rounded::before {
  content: attr(data-icon);
  font-size: 1.05rem;
  line-height: 1;
  opacity: 0;
}

.icons-ready .material-symbols-rounded::before {
  opacity: 1;
}

.nav-link,
.btn,
.avatar-link {
  gap: 0.4rem;
}

.nav-link .material-symbols-rounded,
.btn .material-symbols-rounded,
.avatar-link .material-symbols-rounded {
  font-size: 1.05rem;
}

/* ── Brand bar ───────────────────────────────────────── */
.portal-brand {
  max-width: var(--brand-width, 1080px);
  margin: 0 auto;
  padding: var(--brand-padding, 2.5rem 1.5rem 0);
  margin-bottom: var(--brand-gap, 0);
  display: flex;
  justify-content: var(--brand-justify, flex-start);
  align-items: center;
}

.portal-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: var(--logo-padding, 0.55rem 0.9rem);
  border-radius: var(--radius-md);
  background: var(--logo-bg, var(--surface-elevated));
  border: 1px solid var(--logo-border, var(--border-accent));
  box-shadow: var(--logo-shadow, var(--shadow));
  text-decoration: none;
  transition: transform 160ms ease;
}

.portal-logo:hover {
  transform: translateY(-1px);
}

.portal-logo img {
  height: var(--logo-height, 30px);
  width: auto;
  display: block;
}

.portal-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.portal-header-title {
  display: none;
}

/* ── Nav links ───────────────────────────────────────── */
.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
  background: var(--surface-elevated);
  box-shadow: none;
  transition: transform 160ms ease, background 160ms ease;
}

.nav-link:hover {
  transform: translateY(-1px);
}

.nav-link--primary {
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  box-shadow: 0 4px 14px var(--glow-strong);
}

.nav-link--ghost {
  background: var(--ghost-bg);
  border-color: var(--ghost-border);
  color: var(--text);
}

.theme-toggle {
  padding: 0.45rem 0.65rem;
}

.theme-toggle .material-symbols-rounded::before {
  font-size: 1.15rem;
}

/* ── Avatar menu ─────────────────────────────────────── */
.avatar-menu {
  position: relative;
}

.avatar-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  box-shadow: none;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  min-width: 0;
}

.avatar-trigger:hover {
  transform: translateY(-1px);
}

.avatar-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.avatar-label {
  font-size: 0.9rem;
}

.avatar-caret {
  color: var(--muted);
}

.avatar-dropdown {
  position: absolute;
  right: 0;
  margin-top: 0.5rem;
  background: #1a1a2e;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  padding: 0.4rem;
  min-width: 100%;
  display: none;
  flex-direction: column;
  z-index: 10;
}

.avatar-dropdown.open {
  display: flex;
}

.avatar-link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.4rem;
  padding: 0.6rem 0.75rem;
  border-radius: 0.65rem;
  border: none;
  background: transparent;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  overflow-wrap: anywhere;
}

.avatar-link:hover {
  background: var(--ghost-bg);
}

.avatar-link--ghost {
  text-align: left;
}

.avatar-dropdown__divider {
  height: 1px;
  background: var(--line);
  margin: 0.3rem 0;
}

.avatar-dropdown__label {
  padding: 0.4rem 0.75rem 0.2rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  font-weight: 600;
}

/* ── Footer ──────────────────────────────────────────── */
.site-footer {
  width: 100%;
  margin-top: 3rem;
  padding: 2.5rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer__inner {
  max-width: var(--brand-width, 1080px);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  border-top: 1px solid var(--panel-border);
  padding-top: 1.5rem;
}

.site-footer__brand {
  font-weight: 600;
  color: var(--text);
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.site-footer__nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

.site-footer__nav a:hover {
  color: var(--text);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .portal-brand {
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
  }

  .portal-nav {
    width: 100%;
    margin-left: 0;
    justify-content: center;
  }

  .avatar-trigger {
    padding: 0.4rem 0.7rem;
  }

  .avatar-label {
    max-width: 10rem;
  }
}

/* ── Mobile touch targets ────────────────────────────── */
@media (max-width: 768px) {
  .btn {
    min-height: 44px;
  }

  .nav-link {
    min-height: 44px;
    padding: 0.55rem 1rem;
  }

  .avatar-link {
    min-height: 44px;
    padding: 0.7rem 0.75rem;
  }

  .app-modal__dialog {
    max-width: 96vw;
    max-height: 92vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-top: auto;
    align-self: flex-end;
  }

  .app-modal {
    align-items: flex-end;
  }

  .toast-container {
    left: var(--space-3);
    right: var(--space-3);
    bottom: var(--space-3);
  }

  .toast {
    max-width: none;
  }
}

/* ── Bottom sheet (mobile action menus) ──────────────── */
@media (max-width: 640px) {
  .avatar-dropdown {
    position: fixed;
    inset: auto 0 0 0;
    right: 0;
    margin-top: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-width: none;
    padding: var(--space-4) var(--space-4) var(--space-6);
    box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.2);
    z-index: 50;
  }

  .avatar-dropdown::before {
    content: '';
    display: block;
    width: 36px;
    height: 4px;
    border-radius: 9999px;
    background: var(--line);
    margin: 0 auto var(--space-3);
  }
}

/* ── Animation utilities ─────────────────────────────── */
.fade-in {
  animation: ui-fade-in var(--duration-slow) var(--ease-out) both;
}

.slide-up {
  animation: ui-slide-up 600ms var(--ease-out) both;
}

.stagger-children > * {
  animation: ui-slide-up 600ms var(--ease-out) both;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 120ms; }
.stagger-children > *:nth-child(3) { animation-delay: 240ms; }
.stagger-children > *:nth-child(4) { animation-delay: 360ms; }
.stagger-children > *:nth-child(5) { animation-delay: 480ms; }
.stagger-children > *:nth-child(6) { animation-delay: 600ms; }
.stagger-children > *:nth-child(7) { animation-delay: 720ms; }
.stagger-children > *:nth-child(8) { animation-delay: 840ms; }
.stagger-children > *:nth-child(9) { animation-delay: 960ms; }
.stagger-children > *:nth-child(10) { animation-delay: 1080ms; }
.stagger-children > *:nth-child(11) { animation-delay: 1200ms; }
.stagger-children > *:nth-child(12) { animation-delay: 1320ms; }
.stagger-children > *:nth-child(13) { animation-delay: 1440ms; }
.stagger-children > *:nth-child(14) { animation-delay: 1560ms; }
.stagger-children > *:nth-child(15) { animation-delay: 1680ms; }
.stagger-children > *:nth-child(16) { animation-delay: 1800ms; }
.stagger-children > *:nth-child(17) { animation-delay: 1920ms; }
.stagger-children > *:nth-child(18) { animation-delay: 2040ms; }
.stagger-children > *:nth-child(19) { animation-delay: 2160ms; }
.stagger-children > *:nth-child(20) { animation-delay: 2280ms; }

@keyframes ui-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes ui-slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ui-shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

@keyframes ui-check-draw {
  to { stroke-dashoffset: 0; }
}

/* Success / error feedback classes */
.shake {
  animation: ui-shake 300ms ease;
}

.flash-success {
  animation: ui-flash-success 600ms var(--ease-out) both;
}

.flash-error {
  animation: ui-flash-error 600ms var(--ease-out) both;
}

@keyframes ui-flash-success {
  0% { box-shadow: 0 0 0 0 var(--success); }
  30% { box-shadow: 0 0 0 4px var(--success-bg); }
  100% { box-shadow: none; }
}

@keyframes ui-flash-error {
  0% { box-shadow: 0 0 0 0 var(--danger); }
  30% { box-shadow: 0 0 0 4px var(--danger-bg); }
  100% { box-shadow: none; }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .slide-up,
  .stagger-children > * {
    animation: none !important;
  }
}

/* ── Button interaction feedback ─────────────────────── */
.btn:active:not([disabled]) {
  transform: scale(0.97);
  transition-duration: var(--duration-fast);
}

.nav-link:active,
.avatar-trigger:active,
.avatar-link:active {
  transform: scale(0.97);
  transition-duration: var(--duration-fast);
}

/* ── Skeleton loaders ────────────────────────────────── */
.skeleton {
  background: var(--surface-dim);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--surface-elevated) 50%,
    transparent 100%
  );
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-line {
  height: 0.85rem;
  width: 100%;
  border-radius: var(--radius-xs);
}

.skeleton-line--short {
  width: 60%;
}

.skeleton-line--xs {
  width: 35%;
}

.skeleton-stat {
  height: 5rem;
  border-radius: var(--radius-md);
}

.skeleton-card {
  height: 8rem;
  border-radius: var(--radius-md);
}

.skeleton-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  flex-shrink: 0;
}

@keyframes skeleton-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton::after {
    animation: none;
  }
}

/* ── Toast notifications ─────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-3);
  z-index: 9999;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  color: var(--text);
  font-size: var(--text-sm);
  font-weight: 600;
  max-width: 380px;
  animation: toast-in var(--duration-slow) var(--ease-out) both;
  backdrop-filter: blur(12px);
}

.toast--success {
  border-color: var(--success-border);
  background: var(--success-bg);
  color: var(--success);
}

.toast__check {
  flex-shrink: 0;
}

.toast--error {
  border-color: var(--danger-border);
  background: var(--danger-bg);
  color: var(--danger);
}

.toast--warning {
  border-color: var(--warning-border);
  background: var(--warning-bg);
  color: var(--warning);
}

.toast--info {
  border-color: var(--info-border);
  background: var(--info-bg);
  color: var(--info);
}

.toast.is-exiting {
  animation: toast-out var(--duration-normal) var(--ease-in-out) both;
}

.toast__dismiss {
  margin-left: auto;
  padding: 0;
  border: none;
  background: none;
  color: inherit;
  opacity: 0.5;
  cursor: pointer;
  font-size: var(--text-lg);
  line-height: 1;
}

.toast__dismiss:hover {
  opacity: 1;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(8px) scale(0.96); }
}

@media (max-width: 480px) {
  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }

  .toast {
    max-width: none;
  }
}

/* ── Copy tooltip ────────────────────────────────────── */
.copy-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-strong);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  pointer-events: none;
  animation: copy-tooltip-fade 1.2s ease forwards;
  z-index: 50;
}

@keyframes copy-tooltip-fade {
  0% { opacity: 0; transform: translateX(-50%) translateY(4px); }
  15% { opacity: 1; transform: translateX(-50%) translateY(0); }
  70% { opacity: 1; }
  100% { opacity: 0; }
}

/* ── Pull-to-refresh ─────────────────────────────────── */
.pull-to-refresh-indicator {
  height: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: height 200ms ease, opacity 200ms ease;
  color: var(--muted);
}

.pull-to-refresh-indicator.is-ready {
  color: var(--accent-strong);
}

.pull-to-refresh-indicator.is-refreshing {
  height: 40px !important;
  opacity: 1 !important;
}

.pull-to-refresh-indicator.is-refreshing .material-symbols-rounded {
  animation: ptr-spin 800ms linear infinite;
}

@keyframes ptr-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ── Scrollbar ───────────────────────────────────────── */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}