/* =========================================================================
   LLU Plastic Surgery Research Consortium
   Design system: Regent Red / Cormorant Garamond — matches PLSurgeon.com,
   ResetYourClock.com, and the rest of the Gupta practice brand family.
   ========================================================================= */

/* ---------- Design tokens ---------- */
:root,
[data-theme='light'] {
  /* Brand palette */
  --regent-red: #a30234;
  --regent-red-light: #da384f;
  --regent-red-dark: #7b1832;
  --platinum-gray: #54585a;
  --soft-gray: #666666;
  --beige: #f7f5f3;
  --beige-2: #f0ece7;
  --ink: #2b2b2b;

  /* Semantic surfaces */
  --color-bg: #ffffff;
  --color-surface: var(--beige);
  --color-surface-2: var(--beige-2);
  --color-surface-offset: #ffffff;
  --color-divider: #e4ddd5;
  --color-border: #ddd4ca;

  /* Text */
  --color-text: var(--ink);
  --color-text-muted: var(--soft-gray);
  --color-text-faint: #96938e;
  --color-text-inverse: #fdf9f6;

  /* Primary accent */
  --color-primary: var(--regent-red);
  --color-primary-hover: var(--regent-red-dark);
  --color-primary-active: #5c1226;
  --color-primary-highlight: #f3dbe1;

  /* Status */
  --color-success: #3f7a4d;
  --color-success-highlight: #dcece0;
  --color-warning: #a4671c;
  --color-warning-highlight: #f1e2cc;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px rgba(43, 20, 26, 0.08);
  --shadow-md: 0 8px 24px rgba(43, 20, 26, 0.1);
  --shadow-lg: 0 20px 48px rgba(43, 20, 26, 0.16);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Work Sans', Arial, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #1a1315;
  --color-surface: #201619;
  --color-surface-2: #261a1e;
  --color-surface-offset: #2b1d21;
  --color-divider: #3a262b;
  --color-border: #452c32;

  --color-text: #f2e9e6;
  --color-text-muted: #c6b3ae;
  --color-text-faint: #8f7a76;
  --color-text-inverse: #2b2b2b;

  --color-primary: #e05572;
  --color-primary-hover: #ee7d94;
  --color-primary-active: #f4a1b1;
  --color-primary-highlight: #4a2530;

  --color-success: #6fbf83;
  --color-success-highlight: #223c29;
  --color-warning: #d9a256;
  --color-warning-highlight: #3f321e;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.55);
}

/* ---------- Type scale ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  --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;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.15;
  color: var(--color-text);
  font-weight: 600;
}

p,
li,
figcaption {
  text-wrap: pretty;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

::selection {
  background: var(--color-primary-highlight);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

a,
button,
[role='button'],
input,
textarea,
select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.wrap-narrow {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.wrap-prose {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}
.section-tight {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}
.section-surface {
  background: var(--color-surface);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 1px;
  background: var(--color-primary);
}

h1.display,
.h-display {
  font-size: var(--text-3xl);
  font-weight: 500;
  letter-spacing: -0.01em;
}
h2.section-title,
.h-section {
  font-size: var(--text-2xl);
  font-weight: 500;
}
h3.card-title,
.h-card {
  font-size: var(--text-lg);
  font-weight: 600;
}

.lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 42ch;
}

.text-muted {
  color: var(--color-text-muted);
}

.grid {
  display: grid;
  gap: var(--space-8);
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 860px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 0.5rem 0;
}
.btn-ghost:hover {
  color: var(--color-primary-hover);
}
.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: var(--text-xs);
}
.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-divider);
  background: color-mix(in srgb, var(--color-bg) 96%, transparent);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}
.brand svg {
  width: 2.25rem;
  height: 2.25rem;
  color: var(--color-primary);
  flex-shrink: 0;
}
.brand-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1.2;
}
.brand-text small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}
.nav-links a {
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-interactive);
}
.nav-links a:hover::after,
.nav-links a.is-active::after {
  width: 100%;
}
.nav-links a.is-active {
  color: var(--color-primary);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.nav-portal-mobile {
  display: none;
}
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}
.theme-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-primary);
}
.nav-toggle {
  display: none;
  width: 2.25rem;
  height: 2.25rem;
  align-items: center;
  justify-content: center;
}
@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    inset: 4.25rem 0 0 0;
    height: calc(100vh - 4.25rem);
    z-index: 40;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-10) var(--space-6);
    gap: var(--space-6);
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-interactive), transform var(--transition-interactive);
  }
  .nav-links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .nav-links a {
    font-size: var(--text-lg);
    font-family: var(--font-display);
  }
  .nav-toggle {
    display: flex;
  }
  .nav-cta a.btn {
    display: none;
  }
  .nav-portal-mobile {
    display: inline-block !important;
    color: var(--color-primary) !important;
  }
  .brand-text {
    font-size: 0.75rem;
  }
  .nav-cta {
    gap: var(--space-2);
  }
  .nav-cta button.btn-sm {
    padding: 0.4rem 0.7rem;
    font-size: 0.65rem;
    white-space: nowrap;
  }
  .theme-toggle,
  .nav-toggle {
    width: 1.9rem;
    height: 1.9rem;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-surface), var(--color-bg));
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    padding-block: var(--space-16);
  }
}
.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-10);
  flex-wrap: wrap;
}
.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-10);
  flex-wrap: wrap;
}
.hero-media {
  position: relative;
}
.hero-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/5;
  object-fit: cover;
  width: 100%;
}
.hero-media-tag {
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  box-shadow: var(--shadow-md);
  font-size: var(--text-xs);
  max-width: 15rem;
}
.hero-media-tag strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
}
.card-icon svg {
  width: 1.4rem;
  height: 1.4rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--color-primary-highlight);
  color: var(--color-primary-hover);
}

/* ---------- Timeline / steps ---------- */
.steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.step {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: var(--space-5);
}
.step-num {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
}

/* ---------- Meeting agenda ---------- */
.agenda-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.agenda-row:first-child {
  border-top: none;
}
.agenda-time {
  font-family: var(--font-display);
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--color-divider);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-6);
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  gap: var(--space-4);
}
.faq-q svg {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-primary);
  transition: transform var(--transition-interactive);
}
.faq-item.is-open .faq-q svg {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 260ms cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--color-text-muted);
}
.faq-a-inner {
  padding-bottom: var(--space-6);
  max-width: 68ch;
}
.faq-item.is-open .faq-a {
  max-height: 40rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: #e8e2de;
  padding-block: var(--space-16) var(--space-10);
}
[data-theme='dark'] .site-footer {
  background: #100b0d;
}
.site-footer a {
  color: #e8e2de;
}
.site-footer a:hover {
  color: #fff;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-10);
}
@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.footer-grid h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #b7aca6;
  margin-bottom: var(--space-4);
  font-weight: 600;
}
.footer-grid ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-sm);
  list-style: none;
}
.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: #a89d97;
}

/* ---------- Forms ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.field label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}
.field input,
.field textarea,
.field select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-sm);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}

/* ---------- Portal (password gate + tracker) ---------- */
.portal-lock {
  max-width: 26rem;
  margin: 0 auto;
  text-align: center;
}
.portal-lock-icon {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}
.portal-error {
  color: #b23b3b;
  font-size: var(--text-sm);
  margin-top: var(--space-3);
  display: none;
}
.portal-error.is-visible {
  display: block;
}

.tracker-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.tracker-board {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.tracker-card {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.tracker-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.tracker-card-head h3 {
  font-size: var(--text-lg);
}
.tracker-meta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}
.tracker-actions {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}
.icon-btn {
  width: 2.1rem;
  height: 2.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.icon-btn:hover {
  background: var(--color-surface-2);
  color: var(--color-primary);
}
.icon-btn svg {
  width: 1.05rem;
  height: 1.05rem;
}

.phase-track {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.phase-chip {
  flex: 1;
  min-width: 5.5rem;
  text-align: center;
  padding: 0.45rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--color-surface-2);
  color: var(--color-text-faint);
  border: 1px solid var(--color-divider);
}
.phase-chip.is-done {
  background: var(--color-primary-highlight);
  color: var(--color-primary-hover);
  border-color: transparent;
}
.phase-chip.is-current {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: transparent;
}

.tracker-next {
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
}
.tracker-next strong {
  display: block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
  font-weight: 600;
}
.tracker-footline {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 12, 14, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  z-index: 100;
}
.modal-backdrop.is-open {
  display: flex;
}
.modal {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  max-width: 34rem;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}
.modal-head h3 {
  font-size: var(--text-lg);
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 520px) {
  .field-row {
    grid-template-columns: 1fr;
  }
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-muted);
}

.spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--color-divider);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: var(--space-10) auto;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.toast {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  background: var(--ink);
  color: #fff;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  z-index: 200;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-interactive), transform var(--transition-interactive);
  pointer-events: none;
}
.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Utility ---------- */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.text-center { text-align: center; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.hidden { display: none !important; }

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Research Consortium Members page ---------- */
.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-6);
}
.member-card {
  position: relative;
  text-align: center;
  padding: var(--space-8) var(--space-6);
}
.member-avatar,
.member-avatar-placeholder {
  width: 6.5rem;
  height: 6.5rem;
  border-radius: 50%;
  margin: 0 auto var(--space-5);
  box-shadow: var(--shadow-sm);
}
.member-avatar {
  object-fit: cover;
}
.member-avatar-placeholder {
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.member-avatar-placeholder svg {
  width: 2.25rem;
  height: 2.25rem;
}
.member-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
}
.member-status {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-top: var(--space-1);
}
.member-actions {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  gap: var(--space-2);
}
.member-mine-badge {
  display: inline-flex;
  margin-top: var(--space-3);
}
.member-empty {
  grid-column: 1 / -1;
}

.photo-upload {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.photo-upload-preview,
.photo-upload-placeholder {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  flex-shrink: 0;
}
.photo-upload-preview {
  object-fit: cover;
}
.photo-upload-placeholder {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}
.photo-upload-placeholder svg {
  width: 1.75rem;
  height: 1.75rem;
}

.owner-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.owner-bar.is-owner-mode {
  color: var(--color-primary);
}
.owner-link {
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.owner-link:hover {
  color: var(--color-primary);
}