/* ============================================================
   Congreso de Salud Mental — Public Design System
   Apple-inspired premium editorial design
   ============================================================ */

/* 1. Custom Properties
   ============================================================ */
:root {
  /* Brand — Congress Navy */
  --brand-primary:      #1a3050;
  --brand-primary-dark: #122338;
  --brand-accent:       #0067c5;
  --brand-accent-dark:  #0058a8;
  --brand-accent-rgb:   0, 103, 197;

  /* Surfaces */
  --color-bg:           #f5f5f7;
  --color-surface:      #ffffff;
  --color-surface-alt:  #fbfbfd;
  --color-surface-dark: #1a3050;

  /* Text */
  --color-text:          #1d1d1f;
  --color-text-secondary:#6e6e73;
  --color-text-tertiary: #a1a1a6;
  --color-text-inverse:  #ffffff;

  /* Borders */
  --color-border:        rgba(0,0,0,.08);
  --color-border-strong: rgba(0,0,0,.14);

  /* Status */
  --color-success:      #28a745;
  --color-success-bg:   #d4edda;
  --color-warning:      #e67e22;
  --color-warning-bg:   #fef3cd;
  --color-danger:       #dc3545;
  --color-danger-bg:    #f8d7da;
  --color-info-bg:      #d1ecf1;

  /* Typography */
  --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
                 "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Type scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  /* Weights */
  --font-light:    300;
  --font-regular:  400;
  --font-medium:   500;
  --font-semibold: 600;
  --font-bold:     700;

  /* Leading */
  --leading-tight:  1.1;
  --leading-snug:   1.2;
  --leading-normal: 1.55;
  --leading-relaxed:1.7;

  /* Tracking */
  --tracking-tight: -0.03em;
  --tracking-snug:  -0.02em;
  --tracking-normal: 0em;
  --tracking-wide:   0.04em;

  /* Radii */
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-2xl:  40px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:  0 2px 8px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.06);
  --shadow-xl:  0 16px 64px rgba(0,0,0,.12), 0 8px 16px rgba(0,0,0,.08);
  --shadow-card: var(--shadow-sm);
  --shadow-card-hover: var(--shadow-lg);

  /* Easing */
  --ease-out:    cubic-bezier(.22,1,.36,1);
  --ease-in-out: cubic-bezier(.4,0,.2,1);

  /* Durations */
  --dur-fast:   150ms;
  --dur-base:   250ms;
  --dur-slow:   400ms;
  --dur-slower: 600ms;

  /* Section spacing */
  --section-py: clamp(3.5rem, 7vw, 7rem);
  --section-py-sm: clamp(2rem, 4.5vw, 4.5rem);

  /* Container */
  --content-max:  1200px;
  --content-wide: 1400px;
  --content-text:  720px;
  --container-px: clamp(1.25rem, 5vw, 3rem);

  /* Navigation */
  --nav-h:      60px;
  --nav-bg:     rgba(255,255,255,.88);
  --nav-blur:   20px;
  --nav-border: rgba(0,0,0,.1);
}

/* 2. Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-system);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

/* 3. Layout Utilities
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

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

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

/* 4. Navigation
   ============================================================ */
.pub-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: 1px solid var(--nav-border);
  transition: background var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}

.pub-nav.scrolled {
  background: rgba(255,255,255,.96);
  box-shadow: 0 1px 0 var(--nav-border), var(--shadow-xs);
}

.pub-nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.pub-nav__brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-shrink: 0;
  max-width: 260px;
}

.pub-nav__logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}

.pub-nav__name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.pub-nav__links {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
}

.pub-nav__links a {
  display: inline-block;
  padding: .4rem .8rem;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: color var(--dur-fast), background var(--dur-fast);
}

.pub-nav__links a:hover {
  color: var(--color-text);
  background: rgba(0,0,0,.04);
}

.pub-nav__links a.active {
  color: var(--brand-accent);
  font-weight: var(--font-semibold);
}

.pub-nav__cta {
  display: inline-flex;
  align-items: center;
  padding: .45rem 1.1rem;
  background: var(--brand-accent);
  color: #fff !important;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  transition: background var(--dur-fast), transform var(--dur-fast);
  flex-shrink: 0;
}

.pub-nav__cta:hover {
  background: var(--brand-accent-dark) !important;
  transform: translateY(-1px);
}

/* Hamburger */
.pub-nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast);
  flex-shrink: 0;
}

.pub-nav__burger:hover { background: rgba(0,0,0,.05); }

.pub-nav__burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-base);
}

.pub-nav__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.pub-nav__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.pub-nav__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu */
.pub-nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem var(--container-px) 1.5rem;
  z-index: 99;
  box-shadow: var(--shadow-lg);
}

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

.pub-nav__mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.pub-nav__mobile a {
  display: block;
  padding: .75rem 1rem;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--dur-fast);
}

.pub-nav__mobile a:hover { background: rgba(0,0,0,.04); }

.pub-nav__mobile .cta-mobile {
  display: block;
  margin-top: 1rem;
  padding: .9rem;
  background: var(--brand-accent);
  color: #fff !important;
  font-weight: var(--font-semibold);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: var(--text-base);
}

/* Spacer for fixed nav */
.nav-spacer { height: var(--nav-h); }

/* 5. Hero
   ============================================================ */
.pub-hero {
  min-height: min(100vh, 900px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, #0f2034 0%, #1a3050 40%, #1e4a7a 100%);
  padding: var(--section-py) var(--container-px);
}

.pub-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0,103,197,.25) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(30,74,122,.3) 0%, transparent 50%);
  pointer-events: none;
}

.pub-hero__content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
}

.pub-hero__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.pub-hero__logo-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  background: rgba(255,255,255,.93);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  padding: .35rem .75rem;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  transition: background var(--dur-base) var(--ease-out),
              box-shadow  var(--dur-base) var(--ease-out);
}

.pub-hero__logo-item:hover {
  background: #fff;
  box-shadow: 0 3px 10px rgba(0,0,0,.12);
}

.pub-hero__edition {
  display: inline-block;
  padding: .35rem .9rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,.8);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.pub-hero__title {
  font-size: clamp(2.1rem, 4.5vw + 1rem, 4.2rem);
  font-weight: 680;
  color: #fff;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin-bottom: 1rem;
}

.pub-hero__slogan {
  font-size: clamp(var(--text-lg), 2vw, var(--text-2xl));
  font-weight: var(--font-light);
  color: rgba(255,255,255,.82);
  margin-bottom: 2rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-relaxed);
}

.pub-hero__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.pub-hero__meta-item {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: var(--text-base);
  color: rgba(255,255,255,.82);
  font-weight: var(--font-medium);
}

.pub-hero__meta-icon {
  width: 16px;
  height: 16px;
  opacity: .65;
  flex-shrink: 0;
}

.pub-hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.pub-hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  color: rgba(255,255,255,.4);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* 6. Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .8rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    background var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
  line-height: 1;
  white-space: nowrap;
}

.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.98); }

.btn-primary {
  background: var(--brand-accent);
  color: #fff;
}
.btn-primary:hover { background: var(--brand-accent-dark); box-shadow: 0 4px 16px rgba(var(--brand-accent-rgb),.35); }

.btn-secondary {
  background: rgba(255,255,255,.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover { background: rgba(255,255,255,.25); }

.btn-outline {
  background: transparent;
  color: var(--brand-accent);
  border: 1.5px solid var(--brand-accent);
}
.btn-outline:hover { background: var(--brand-accent); color: #fff; }

.btn-ghost {
  background: rgba(0,0,0,.04);
  color: var(--color-text-secondary);
}
.btn-ghost:hover { background: rgba(0,0,0,.08); color: var(--color-text); }

.btn-dark {
  background: var(--brand-primary);
  color: #fff;
}
.btn-dark:hover { background: var(--brand-primary-dark); }

.btn-sm {
  padding: .55rem 1.1rem;
  font-size: var(--text-sm);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: var(--text-lg);
}

.btn-full { width: 100%; }

.btn:disabled, .btn[disabled] {
  opacity: .5;
  cursor: not-allowed;
  transform: none;
}

/* 7. Sections
   ============================================================ */
.pub-section {
  padding: var(--section-py) 0;
}

.pub-section--sm {
  padding: var(--section-py-sm) 0;
}

.pub-section--white {
  background: var(--color-surface);
}

.pub-section--alt {
  background: var(--color-bg);
}

.pub-section--dark {
  background: var(--brand-primary);
  color: #fff;
}

.pub-section--dark .section-eyebrow { color: rgba(255,255,255,.6); }
.pub-section--dark .section-title   { color: #fff; }
.pub-section--dark .section-body    { color: rgba(255,255,255,.75); }

.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: .75rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw + .5rem, 3rem);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--color-text);
  margin-bottom: 1rem;
}

.section-body {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: var(--content-text);
}

.section-header {
  margin-bottom: clamp(2.5rem, 4vw, 4rem);
}

.section-header--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-header--center .section-body {
  margin: 0 auto;
}

/* 8. Cards
   ============================================================ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.card__body {
  padding: 1.5rem;
}

.card__body--lg {
  padding: 2rem;
}

/* 9. Stats Strip
   ============================================================ */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.stat-item {
  background: var(--color-surface);
  padding: 2rem 1.5rem;
  text-align: center;
}

.stat-value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--brand-primary);
  line-height: 1;
  display: block;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: .35rem;
  font-weight: var(--font-medium);
}

/* 10. Speakers
   ============================================================ */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.speaker-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.speaker-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.speaker-card:hover .speaker-photo { transform: scale(1.04); }

.speaker-photo-wrap {
  aspect-ratio: 3/4;
  overflow: hidden;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}

.speaker-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}

.speaker-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a3050 0%, #2d5a8e 100%);
}

.speaker-placeholder-initial {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-bold);
  color: rgba(255,255,255,.5);
  letter-spacing: -.02em;
}

.speaker-info {
  padding: 1.25rem 1.5rem 1.5rem;
}

.speaker-name {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  letter-spacing: var(--tracking-snug);
  margin-bottom: .25rem;
}

.speaker-role {
  font-size: var(--text-sm);
  color: var(--brand-accent);
  font-weight: var(--font-medium);
  margin-bottom: .2rem;
}

.speaker-inst {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.speaker-bio {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-top: .75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 11. Program
   ============================================================ */
.program-day-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1px;
  border-bottom: 1px solid var(--color-border);
}

.program-day-tab {
  display: inline-block;
  padding: .55rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all var(--dur-fast);
  background: none;
}

.program-day-tab:hover {
  color: var(--brand-accent);
  background: rgba(0,103,197,.06);
}

.program-day-tab.active {
  color: var(--brand-accent);
  background: rgba(0,103,197,.08);
  border-color: rgba(0,103,197,.2);
}

.program-day-block {
  display: none;
}

.program-day-block.active {
  display: block;
}

.program-timeline {
  position: relative;
  padding-left: 1.5rem;
}

.program-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.program-item {
  position: relative;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1.25rem;
  padding-bottom: 1.5rem;
}

.program-item::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-accent);
  border: 2px solid var(--color-surface);
  box-shadow: 0 0 0 2px var(--brand-accent);
}

.program-time {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--brand-accent);
  padding-top: .1rem;
  flex-shrink: 0;
}

.program-content {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border);
}

.program-type-badge {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  background: rgba(0,103,197,.1);
  color: var(--brand-accent);
  margin-bottom: .5rem;
}

.program-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: .35rem;
}

.program-meta {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.program-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: .5rem;
  line-height: var(--leading-relaxed);
}

/* 12. Courses
   ============================================================ */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.course-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.course-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.course-image-wrap {
  height: 180px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--brand-primary) 0%, #2d5a8e 100%);
  position: relative;
  flex-shrink: 0;
}

.course-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  opacity: .5;
}

.course-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.course-key {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.course-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  letter-spacing: var(--tracking-snug);
  line-height: var(--leading-snug);
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.course-meta-item {
  display: flex;
  align-items: center;
  gap: .3rem;
}

.course-capacity {
  margin-top: auto;
}

.capacity-bar {
  height: 4px;
  background: rgba(0,0,0,.06);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: .35rem;
}

.capacity-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--brand-accent);
  transition: width .3s var(--ease-out);
}

.capacity-fill--full  { background: var(--color-danger); }
.capacity-fill--few   { background: var(--color-warning); }

.capacity-label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.status-open     { background: var(--color-success-bg); color: #166534; }
.status-few      { background: var(--color-warning-bg); color: #92400e; }
.status-full     { background: var(--color-danger-bg);  color: #991b1b; }
.status-upcoming { background: rgba(0,0,0,.06);          color: var(--color-text-secondary); }
.status-closed   { background: rgba(0,0,0,.06);          color: var(--color-text-secondary); }
.status-cancelled{ background: rgba(0,0,0,.06);          color: var(--color-text-secondary); }

/* 13. Registration Forms
   ============================================================ */
.reg-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.reg-wrap--wide {
  max-width: 840px;
}

/* Progress */
.reg-progress {
  display: flex;
  align-items: center;
  margin-bottom: 2.5rem;
}

.reg-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  min-width: 60px;
}

.reg-step-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,.06);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  transition: background var(--dur-base), color var(--dur-base);
  border: 2px solid transparent;
}

.reg-step.active .reg-step-circle {
  background: var(--brand-accent);
  color: #fff;
  box-shadow: 0 0 0 3px rgba(var(--brand-accent-rgb),.2);
}

.reg-step.done .reg-step-circle {
  background: var(--color-success);
  color: #fff;
  border-color: transparent;
}

.reg-step-label {
  font-size: .6875rem;
  color: var(--color-text-tertiary);
  text-align: center;
  font-weight: var(--font-medium);
  white-space: nowrap;
}

.reg-step.active .reg-step-label {
  color: var(--brand-accent);
  font-weight: var(--font-semibold);
}

.reg-step.done .reg-step-label {
  color: var(--color-success);
}

.reg-step-line {
  flex: 1;
  height: 1.5px;
  background: rgba(0,0,0,.08);
  margin: 0 .25rem;
  margin-bottom: 1.5rem;
  transition: background var(--dur-base);
}

.reg-step-line.done {
  background: var(--color-success);
}

/* Form card */
.reg-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.reg-card__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-snug);
  color: var(--color-text);
  margin-bottom: .5rem;
}

.reg-card__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

/* Form elements */
.form-section-title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: .6rem;
  margin: 1.75rem 0 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-row--3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: .5rem;
}

.form-group label .req {
  color: var(--color-danger);
  margin-left: .15rem;
}

.form-control {
  width: 100%;
  height: 52px;
  padding: 0 1rem;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(var(--brand-accent-rgb),.15);
}

.form-control--error {
  border-color: var(--color-danger) !important;
}

.form-control--error:focus {
  box-shadow: 0 0 0 3px rgba(220,53,69,.15);
}

textarea.form-control {
  height: auto;
  padding-top: .85rem;
  padding-bottom: .85rem;
  resize: vertical;
  min-height: 120px;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236e6e73' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .9rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: .35rem;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
  margin-top: .35rem;
  display: flex;
  align-items: center;
  gap: .25rem;
}

/* Alert boxes */
.alert {
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.alert ul { margin: .5rem 0 0 1.25rem; }
.alert li { margin-bottom: .2rem; }

.alert-error   { background: var(--color-danger-bg); color: #721c24; border: 1px solid #f5c6cb; }
.alert-success { background: var(--color-success-bg); color: #155724; border: 1px solid #c3e6cb; }
.alert-warning { background: var(--color-warning-bg); color: #856404; border: 1px solid #ffeeba; }
.alert-info    { background: var(--color-info-bg); color: #0c5460; border: 1px solid #bee5eb; }

/* Checkbox & checkmark */
.check-label {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  cursor: pointer;
  margin-bottom: 1rem;
}

.check-label input[type=checkbox] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: .1rem;
  accent-color: var(--brand-accent);
  cursor: pointer;
}

.check-label-text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
}

/* Form buttons row */
.form-btns {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  align-items: center;
}

.form-btns .btn-submit {
  flex: 1;
}

.form-btns .btn-back {
  flex-shrink: 0;
  padding: .8rem 1.25rem;
  background: rgba(0,0,0,.04);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background var(--dur-fast);
}

.form-btns .btn-back:hover {
  background: rgba(0,0,0,.08);
  color: var(--color-text);
}

/* Course selection */
.course-select-item {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  margin-bottom: .75rem;
  cursor: pointer;
  transition: border-color var(--dur-fast), background var(--dur-fast);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  position: relative;
}

.course-select-item:hover {
  border-color: rgba(var(--brand-accent-rgb),.4);
  background: rgba(var(--brand-accent-rgb),.02);
}

.course-select-item.selected {
  border-color: var(--brand-accent);
  background: rgba(var(--brand-accent-rgb),.05);
}

.course-select-item.full {
  opacity: .55;
  cursor: not-allowed;
  background: rgba(0,0,0,.02);
}

.course-select-item.conflict {
  border-color: var(--color-warning);
  background: rgba(230,126,34,.05);
}

.course-checkbox {
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: 6px;
  flex-shrink: 0;
  margin-top: .1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-fast), border-color var(--dur-fast);
}

.course-select-item.selected .course-checkbox {
  background: var(--brand-accent);
  border-color: var(--brand-accent);
  color: #fff;
}

.course-select-body { flex: 1; }

.course-select-title {
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: .3rem;
  font-size: var(--text-base);
}

.course-select-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  align-items: center;
}

/* Summary boxes */
.summary-box {
  background: rgba(0,0,0,.025);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.summary-box-title {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: .9rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: var(--text-sm);
  padding: .3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.summary-row:last-child { border-bottom: none; }
.summary-row .s-label { color: var(--color-text-secondary); }
.summary-row .s-value { color: var(--color-text); font-weight: var(--font-medium); text-align: right; }

/* Privacy box */
.privacy-box {
  background: rgba(0,0,0,.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  max-height: 200px;
  overflow-y: auto;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: 1.25rem;
}

/* 14. Recovery & Confirmation
   ============================================================ */
.centered-card-wrap {
  max-width: 520px;
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.centered-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(2rem, 5vw, 3rem);
  text-align: center;
}

.centered-card .icon-display {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(var(--brand-accent-rgb),.1);
  color: var(--brand-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.75rem;
}

.icon-success { background: var(--color-success-bg); color: var(--color-success); }
.icon-closed  { background: rgba(0,0,0,.05); color: var(--color-text-secondary); }

.folio-display {
  display: inline-block;
  background: rgba(var(--brand-accent-rgb),.08);
  border: 1.5px dashed rgba(var(--brand-accent-rgb),.3);
  border-radius: var(--radius-lg);
  padding: .9rem 2rem;
  margin: 1.5rem 0;
}

.folio-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: .35rem;
}

.folio-value {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--font-bold);
  letter-spacing: .05em;
  color: var(--brand-primary);
}

/* 15. Congress List / Selector
   ============================================================ */
.congress-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.congress-list-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.congress-list-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateX(4px);
}

.congress-list-card h2 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  letter-spacing: var(--tracking-snug);
  margin-bottom: .25rem;
}

.congress-list-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* 16. Portal
   ============================================================ */
.portal-wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.portal-hero {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #2d5a8e 100%);
  border-radius: var(--radius-xl);
  padding: 2rem 2rem 2rem;
  color: #fff;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}

.portal-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(255,255,255,.05) 0%, transparent 60%);
  pointer-events: none;
}

.portal-folio {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-md);
  padding: .4rem 1rem;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: .05em;
  margin: .75rem 0 .5rem;
}

.portal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.portal-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
}

.portal-card-title {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

/* 17. Footer
   ============================================================ */
.pub-footer {
  background: var(--brand-primary);
  color: rgba(255,255,255,.7);
  padding: 4rem 0 2rem;
}

.pub-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.pub-footer__brand {
  max-width: 320px;
}

.pub-footer__name {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: #fff;
  margin-bottom: .5rem;
  letter-spacing: var(--tracking-snug);
}

.pub-footer__tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  opacity: .65;
  margin-bottom: 1.25rem;
}

.pub-footer__social {
  display: flex;
  gap: .75rem;
}

.pub-footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.75);
  font-size: var(--text-sm);
  transition: background var(--dur-fast), color var(--dur-fast);
  text-decoration: none;
}

.pub-footer__social a:hover {
  background: rgba(255,255,255,.2);
  color: #fff;
}

.pub-footer__col-title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: rgba(255,255,255,.45);
  margin-bottom: 1rem;
}

.pub-footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.pub-footer__links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,.65);
  transition: color var(--dur-fast);
  text-decoration: none;
}

.pub-footer__links a:hover { color: #fff; }

.pub-footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: var(--text-sm);
  margin-bottom: .6rem;
}

.pub-footer__contact-item a {
  color: rgba(255,255,255,.65);
  transition: color var(--dur-fast);
}

.pub-footer__contact-item a:hover { color: #fff; }

.pub-footer__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 1.75rem 0;
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 1rem;
}

.pub-footer__logo-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  padding: .5rem 1.1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
  transition: background var(--dur-base) var(--ease-out),
              box-shadow  var(--dur-base) var(--ease-out);
}

.pub-footer__logo-item:hover {
  background: #fff;
  box-shadow: 0 3px 10px rgba(0,0,0,.18);
}

.pub-footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: var(--text-xs);
}

/* 18. Animations & Intersection Observer
   ============================================================ */
.anim-fade {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--dur-slower) var(--ease-out),
    transform var(--dur-slower) var(--ease-out);
}

.anim-fade.visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-fade--delay-1 { transition-delay: 80ms; }
.anim-fade--delay-2 { transition-delay: 160ms; }
.anim-fade--delay-3 { transition-delay: 240ms; }
.anim-fade--delay-4 { transition-delay: 320ms; }

/* 19. Utilities
   ============================================================ */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-secondary { color: var(--color-text-secondary); }
.text-accent    { color: var(--brand-accent); }
.font-bold      { font-weight: var(--font-bold); }
.d-none  { display: none; }
.d-flex  { display: flex; }
.d-grid  { display: grid; }
.gap-1   { gap: .5rem; }
.gap-2   { gap: 1rem; }
.gap-3   { gap: 1.5rem; }
.mt-1    { margin-top: .5rem; }
.mt-2    { margin-top: 1rem; }
.mt-3    { margin-top: 1.5rem; }
.mb-2    { margin-bottom: 1rem; }
.w-full  { width: 100%; }

/* Divider */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 2rem 0;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 5rem 2rem 6rem;
  color: var(--color-text-secondary);
}

.empty-state__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  margin: 0 auto 1.75rem;
  border-radius: var(--radius-xl);
  background: rgba(0,0,0,.04);
  color: var(--color-text-tertiary);
}

.empty-state__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  letter-spacing: var(--tracking-snug);
  margin: 0 0 .6rem;
}

.empty-state__desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 360px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* legacy single-p empty states */
.empty-state > p {
  font-size: var(--text-lg);
  max-width: 400px;
  margin: 0 auto;
}

/* Recover link */
.recover-link {
  text-align: center;
  margin-top: 1.5rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.recover-link a {
  color: var(--brand-accent);
  font-weight: var(--font-medium);
}

.recover-link a:hover { text-decoration: underline; }

/* Hero secondary button */
.btn-hero-secondary {
  background: transparent;
  color: rgba(255,255,255,.9);
  border: 1.5px solid rgba(255,255,255,.35);
}
.btn-hero-secondary:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.6);
  color: #fff;
}
.btn-hero-secondary svg {
  transition: transform var(--dur-fast) var(--ease-out);
}
.btn-hero-secondary:hover svg {
  transform: translateX(3px);
}

/* Section nav cards */
.pub-section-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform  var(--dur-base) var(--ease-out),
    border-color var(--dur-base);
  text-decoration: none;
  color: inherit;
}
.pub-section-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(0,103,197,.15);
}
.pub-section-card__cta {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  margin-top: 1.1rem;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--brand-accent);
}
.pub-section-card__cta svg {
  transition: transform var(--dur-fast) var(--ease-out);
}
.pub-section-card:hover .pub-section-card__cta svg {
  transform: translateX(3px);
}

/* Venue editorial card */
.pub-venue-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 2.25rem;
  border: 1px solid var(--color-border);
}
.pub-venue-card__icon {
  margin-bottom: 1.25rem;
}
.pub-venue-card__link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1.25rem;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--brand-accent);
  text-decoration: none;
  border-bottom: 1.5px solid transparent;
  padding-bottom: 1px;
  transition: border-color var(--dur-fast);
}
.pub-venue-card__link:hover {
  border-color: var(--brand-accent);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #1e4a7a 100%);
  padding: var(--section-py) 0;
  text-align: center;
  color: #fff;
}

.cta-section .section-eyebrow { color: rgba(255,255,255,.6); }
.cta-section .section-title   { color: #fff; }

/* Page header (inner pages) */
.pub-page-header {
  padding: var(--section-py-sm) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}

.pub-page-header__eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: .5rem;
}

.pub-page-header__title {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

.pub-page-header__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-top: .5rem;
}

/* 20. Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .pub-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .pub-footer__brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: clamp(2.25rem, 5vw, 4rem);
    --section-py-sm: clamp(1.75rem, 4vw, 3rem);
  }

  /* Why attend + Venue 2-col grids */
  .pub-two-col-grid {
    grid-template-columns: 1fr !important;
    gap: 2.5rem !important;
  }

  .pub-nav__links,
  .pub-nav__cta {
    display: none;
  }

  .pub-nav__burger {
    display: flex;
  }

  .speakers-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .program-item {
    grid-template-columns: 1fr;
    gap: .5rem;
  }

  .program-item::before { display: none; }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .portal-grid {
    grid-template-columns: 1fr;
  }

  .pub-footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .pub-footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 540px) {
  .form-row,
  .form-row--3 {
    grid-template-columns: 1fr;
  }

  .pub-hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .pub-hero__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .form-btns {
    flex-direction: column;
  }

  .form-btns .btn-submit,
  .form-btns .btn-back {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .reg-step-label {
    display: none;
  }

  .centered-card-wrap {
    padding: 1.5rem 0 3rem;
  }

  .congress-list-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .congress-list-card .btn { width: 100%; }
}

@media (max-width: 375px) {
  .pub-hero__edition { display: none; }
  .pub-hero__meta { gap: .75rem; }
}

/* 21. Extended Components
   ============================================================ */

/* Button extras */
.btn-success {
  background: var(--color-success);
  color: #fff;
}
.btn-success:hover { background: #218838; box-shadow: 0 4px 16px rgba(40,167,69,.35); }

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Form extras */
.form-btns--split {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.form-btns--split .btn:first-child { flex-shrink: 0; }
.form-btns--split .btn:last-child  { flex: 1; justify-content: center; }

.form-section-label {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: .5rem;
  margin: 1.75rem 0 1.1rem;
}

.input-error { border-color: var(--color-danger) !important; }

.error-msg {
  font-size: var(--text-xs);
  color: var(--color-danger);
  margin-top: .35rem;
}

/* Summary blocks */
.summary-block {
  background: rgba(0,0,0,.025);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.1rem;
}

.summary-block__title {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: .75rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: var(--text-sm);
  padding: .3rem 0;
  border-bottom: 1px solid var(--color-border);
  gap: 1rem;
}
.summary-row:last-child { border-bottom: none; }
.summary-row__label { color: var(--color-text-secondary); flex-shrink: 0; }
.summary-row__value { color: var(--color-text); font-weight: var(--font-medium); text-align: right; }

/* Page header compact */
.pub-page-header--sm {
  padding-top: calc(var(--nav-h) + 2rem);
  padding-bottom: 2rem;
}

/* Registration: success / step 5 */
.reg-success-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(2rem, 6vw, 3.5rem);
  text-align: center;
}

.reg-success-icon { font-size: 3.5rem; margin-bottom: 1rem; line-height: 1; }

.reg-success-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-success);
  letter-spacing: var(--tracking-snug);
  margin-bottom: .5rem;
}

.reg-folio-box {
  display: inline-block;
  background: rgba(var(--brand-accent-rgb),.07);
  border: 1.5px dashed rgba(var(--brand-accent-rgb),.3);
  border-radius: var(--radius-lg);
  padding: 1rem 2.25rem;
  margin: 1.75rem 0;
  text-align: center;
}

.reg-folio-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: .3rem;
}

.reg-folio-value {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: var(--font-bold);
  letter-spacing: .05em;
  color: var(--brand-primary);
}

.reg-qr-block {
  text-align: center;
  margin: 1.5rem 0;
}

.reg-actions {
  display: flex;
  gap: .75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* Portal header */
.portal-header {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #2d5a8e 100%);
  border-radius: var(--radius-xl);
  padding: 2rem 2.25rem;
  color: #fff;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}

.portal-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(255,255,255,.06) 0%, transparent 60%);
  pointer-events: none;
}

.portal-header__eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wider, .06em);
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin-bottom: .4rem;
}

.portal-header__name {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: #fff;
  letter-spacing: var(--tracking-snug);
  margin: 0 0 .15rem;
}

.portal-header__congress {
  font-size: var(--text-sm);
  color: rgba(255,255,255,.7);
  margin: 0;
}

.portal-folio {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-md);
  padding: .35rem .9rem;
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  letter-spacing: .05em;
  color: #fff;
}

/* Course select check indicator */
.course-select-check {
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: 6px;
  flex-shrink: 0;
  margin-top: .1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-fast), border-color var(--dur-fast);
  color: transparent;
}

.course-select-item.selected .course-select-check {
  background: var(--brand-accent);
  border-color: var(--brand-accent);
  color: #fff;
}

.course-select-badge {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
}

.course-select-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

/* Alert box baseline (if not already applied) */
.alert-error {
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}
.alert-success {
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}
.alert-warning {
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* Responsive extras */
@media (max-width: 540px) {
  .form-btns--split {
    flex-direction: column;
  }
  .form-btns--split .btn {
    width: 100%;
    justify-content: center;
  }
  .reg-actions {
    flex-direction: column;
    align-items: center;
  }
  .reg-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .portal-grid {
    grid-template-columns: 1fr;
  }
}

/* 22. Accessibility
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* 22. Reduced Motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .anim-fade {
    opacity: 1;
    transform: none;
  }
}