/* ==========================================================================
   3READY PROTOTYPING LAB — UNIFIED BRAND & SPEAKER STYLESHEET
   Standard: 3Ready Brand Bible (BRAND_BIBLE.md) & Google Dev Style Guide
   Zero External Dependencies — Pure Native CSS with Dual-Mode Print Architecture
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS & SYSTEM PROPERTIES
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette — Light / Warm Paper Canvas (Default) */
  --ink: #10110F;
  --ink-secondary: #2B2D29;
  --paper: #F3F0E7;
  --paper-deep: #E8E4D9;
  --paper-card: #FFFFFF;
  --white: #FBFAF5;
  --acid: #A8D94A;
  --acid-hover: #98C73E;
  --acid-dark: #587B18;
  --acid-bg: rgba(168, 217, 74, 0.15);
  --slate: #66727A;
  --slate-light: #94A3B8;
  --slate-dark: #334155;
  --line: rgba(16, 17, 15, 0.14);
  --line-strong: rgba(16, 17, 15, 0.35);
  --accent-blue: #2563EB;
  --status-emerald: #10B981;
  --status-amber: #D97706;

  /* Typography Stacks (Native system fallbacks matching brand specs) */
  --font-display: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Space Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Layout & Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Geometry */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(16, 17, 15, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(16, 17, 15, 0.08), 0 2px 4px -1px rgba(16, 17, 15, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(16, 17, 15, 0.10), 0 4px 6px -2px rgba(16, 17, 15, 0.05);
  --shadow-card: 0 2px 0 rgba(16, 17, 15, 0.08);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Tokens */
:root[data-theme="dark"] {
  --ink: #F3F0E7;
  --ink-secondary: #D1D5DB;
  --paper: #09090C;
  --paper-deep: #141419;
  --paper-card: #1A1A22;
  --white: #22222D;
  --acid: #B6EB55;
  --acid-hover: #C5F46E;
  --acid-dark: #A8D94A;
  --acid-bg: rgba(182, 235, 85, 0.12);
  --slate: #94A3B8;
  --slate-light: #CBD5E1;
  --slate-dark: #64748B;
  --line: rgba(243, 240, 231, 0.12);
  --line-strong: rgba(243, 240, 231, 0.28);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-card: 0 2px 0 rgba(255, 255, 255, 0.05);
}

/* --------------------------------------------------------------------------
   2. GLOBAL RESET & BASE RULES
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background-color: var(--paper);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--paper);
  color: var(--ink);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

:focus-visible {
  outline: 2px solid var(--acid-dark);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY UTILITIES
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acid-dark);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--acid);
  border-radius: var(--radius-xs);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
}

.lead-text {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--ink-secondary);
}

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

/* --------------------------------------------------------------------------
   4. LAYOUT CONTAINERS & GRIDS
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container-narrow {
  max-width: 900px;
}

.container-wide {
  max-width: 1360px;
}

.section-block {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--line);
}

.section-header {
  margin-bottom: var(--space-10);
}

.section-header .section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.section-header .section-subtitle {
  font-size: 1.0625rem;
  color: var(--slate);
  max-width: 680px;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   5. NAVIGATION & TOP BAR
   -------------------------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--ink);
  color: var(--acid);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-text .submark {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--slate);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-dark);
  padding: var(--space-2) var(--space-1);
  position: relative;
  transition: color var(--transition-fast);
}

:root[data-theme="dark"] .nav-link {
  color: var(--slate-light);
}

.nav-link:hover {
  color: var(--ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   6. BUTTONS & INTERACTIVE CONTROLS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--ink);
  color: var(--white);
  border: 1px solid var(--ink);
}

.btn-primary:hover {
  background-color: var(--acid-dark);
  border-color: var(--acid-dark);
  color: var(--white);
}

:root[data-theme="dark"] .btn-primary {
  background-color: var(--acid);
  color: #10110F;
  border-color: var(--acid);
}

:root[data-theme="dark"] .btn-primary:hover {
  background-color: var(--acid-hover);
  border-color: var(--acid-hover);
}

.btn-secondary {
  background-color: var(--paper-card);
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

.btn-secondary:hover {
  background-color: var(--paper-deep);
  border-color: var(--ink);
}

.btn-acid {
  background-color: var(--acid);
  color: #10110F;
  border: 1px solid var(--acid);
}

.btn-acid:hover {
  background-color: var(--acid-hover);
}

.btn-sm {
  font-size: 0.8125rem;
  padding: 6px 12px;
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  color: var(--ink);
  background-color: var(--paper-card);
}

.btn-icon:hover {
  background-color: var(--paper-deep);
  border-color: var(--line-strong);
}

/* --------------------------------------------------------------------------
   7. HERO & SPEAKER HEADER
   -------------------------------------------------------------------------- */
.speaker-hero {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 2px solid var(--line-strong);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.hero-content .speaker-name {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-top: var(--space-2);
  margin-bottom: var(--space-4);
}

.hero-content .speaker-headline {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink-secondary);
  margin-bottom: var(--space-6);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
  padding: var(--space-4);
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-val {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.1;
}

.metric-val .unit {
  font-size: 0.875rem;
  color: var(--acid-dark);
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-1);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-visual {
  position: relative;
}

.headshot-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--line-strong);
  background-color: var(--paper-deep);
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.headshot-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  text-align: center;
}

.headshot-placeholder svg {
  width: 64px;
  height: 64px;
  color: var(--slate);
  margin-bottom: var(--space-3);
}

.headshot-meta {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-3) var(--space-4);
  background: rgba(16, 17, 15, 0.85);
  backdrop-filter: blur(8px);
  color: var(--white);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.headshot-meta .meta-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   8. TIERED BIOGRAPHIES & COPY TOOLBAR
   -------------------------------------------------------------------------- */
.bio-box-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.bio-tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--line);
  background-color: var(--paper-deep);
}

.bio-tab-btn {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  text-align: center;
  color: var(--slate);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  background: transparent;
}

.bio-tab-btn:hover {
  color: var(--ink);
  background-color: rgba(16, 17, 15, 0.03);
}

.bio-tab-btn.active {
  color: var(--ink);
  background-color: var(--paper-card);
  border-bottom-color: var(--acid-dark);
}

:root[data-theme="dark"] .bio-tab-btn.active {
  border-bottom-color: var(--acid);
}

.bio-panel {
  display: none;
  padding: var(--space-8);
}

.bio-panel.active {
  display: block;
  animation: fadeIn 200ms ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.bio-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px dashed var(--line);
}

.bio-word-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--slate);
}

.bio-body-text {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink-secondary);
}

.bio-body-text p + p {
  margin-top: var(--space-4);
}

.press-assets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.asset-download-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.asset-download-card .asset-title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: var(--space-1);
}

.asset-download-card .asset-specs {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--slate);
  margin-bottom: var(--space-3);
}

/* --------------------------------------------------------------------------
   9. CREDENTIALS MATRIX & VERIFIED ENGAGEMENTS
   -------------------------------------------------------------------------- */
.credentials-table-wrapper {
  background-color: var(--paper-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

.credentials-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.credentials-table th {
  background-color: var(--paper-deep);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-dark);
  padding: var(--space-3) var(--space-4);
  border-bottom: 2px solid var(--line-strong);
}

:root[data-theme="dark"] .credentials-table th {
  color: var(--slate-light);
}

.credentials-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.credentials-table tr:last-child td {
  border-bottom: none;
}

.credentials-table tr:hover td {
  background-color: rgba(168, 217, 74, 0.05);
}

.badge-institution {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background-color: var(--paper-deep);
  color: var(--ink);
  border: 1px solid var(--line);
  margin-bottom: var(--space-1);
}

.badge-role {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background-color: var(--acid-bg);
  color: var(--acid-dark);
}

:root[data-theme="dark"] .badge-role {
  color: var(--acid);
}

/* --------------------------------------------------------------------------
   10. SIGNATURE TALK BLUEPRINTS
   -------------------------------------------------------------------------- */
.talks-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.talk-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.talk-card:hover {
  transform: translateY(-2px);
  border-color: var(--ink);
}

.talk-card-header {
  margin-bottom: var(--space-4);
}

.talk-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.talk-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--acid-dark);
}

.talk-format {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  color: var(--slate);
}

.talk-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: var(--space-2);
}

.talk-abstract {
  font-size: 0.9375rem;
  color: var(--ink-secondary);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.talk-outcomes-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate);
  margin-bottom: var(--space-2);
}

.talk-outcomes-list {
  list-style: none;
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
}

.talk-outcomes-list li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
  line-height: 1.45;
}

.talk-outcomes-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--acid-dark);
  font-weight: 700;
}

.talk-demo-box {
  background-color: var(--paper-deep);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  font-size: 0.8125rem;
  border-left: 3px solid var(--acid);
}

.talk-demo-box strong {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--ink);
  display: block;
  margin-bottom: 2px;
}

/* --------------------------------------------------------------------------
   11. ORGANIZER TECHNICAL RIDER & STAGE SPECS
   -------------------------------------------------------------------------- */
.rider-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.rider-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.rider-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.rider-card-icon {
  width: 28px;
  height: 28px;
  color: var(--acid-dark);
}

:root[data-theme="dark"] .rider-card-icon {
  color: var(--acid);
}

.rider-card-title {
  font-size: 1.125rem;
  font-weight: 800;
}

.rider-spec-list {
  list-style: none;
  font-size: 0.875rem;
}

.rider-spec-list li {
  margin-bottom: var(--space-3);
  line-height: 1.45;
}

.rider-spec-list li strong {
  color: var(--ink);
  display: block;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.rider-spec-list li span {
  color: var(--ink-secondary);
}

/* --------------------------------------------------------------------------
   12. INBOUND ROUTING & CONTACT INTERFACE
   -------------------------------------------------------------------------- */
.inbound-booking-box {
  background-color: var(--paper-card);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.inbound-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-8);
}

.inbound-protocol-list {
  list-style: none;
  margin-top: var(--space-4);
}

.inbound-protocol-list li {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: 0.9375rem;
}

.inbound-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-xs);
  background-color: var(--ink);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

:root[data-theme="dark"] .inbound-step-num {
  background-color: var(--acid);
  color: #10110F;
}

.contact-card {
  background-color: var(--paper-deep);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  border: 1px solid var(--line);
}

.contact-email-link {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
  display: block;
  margin-top: var(--space-2);
  margin-bottom: var(--space-4);
  word-break: break-all;
}

.contact-email-link:hover {
  color: var(--acid-dark);
}

.subject-line-hint {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background-color: var(--paper-card);
  padding: var(--space-3);
  border-radius: var(--radius-xs);
  border: 1px dashed var(--line-strong);
  color: var(--ink);
  margin-bottom: var(--space-4);
}

/* --------------------------------------------------------------------------
   13. TOAST NOTIFICATIONS & FEEDBACK
   -------------------------------------------------------------------------- */
.toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--ink);
  color: var(--white);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--acid);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
  pointer-events: none;
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   14. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--paper-deep);
  border-top: 1px solid var(--line);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate);
}

/* --------------------------------------------------------------------------
   15. RESPONSIVE BREAKPOINTS (SCREEN)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .talks-grid {
    grid-template-columns: 1fr;
  }
  .rider-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  .press-assets-grid {
    grid-template-columns: 1fr;
  }
  .rider-grid {
    grid-template-columns: 1fr;
  }
  .inbound-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   16. PRINT SPECIFICATIONS (A4 DUAL-MODE ARCHITECTURE)
   Strict compliance: zero dark ink waste, A4 exact pagination, clean point typography
   -------------------------------------------------------------------------- */
@page {
  size: A4 portrait;
  margin: 12mm 14mm 14mm 14mm;
}

@media print {
  /* 1. Force High-Contrast Ink-on-White */
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #10110F !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  html, body {
    background-color: #FFFFFF !important;
    color: #10110F !important;
    font-size: 9pt !important;
    line-height: 1.35 !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }

  /* 2. Container Adjustments */
  .container,
  .container-narrow,
  .container-wide,
  .one-sheet-container {
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
  }

  .section-block {
    padding-top: 10pt !important;
    padding-bottom: 10pt !important;
    border-bottom: 0.75pt solid #10110F !important;
  }

  /* 3. Structural Page Break Control */
  .no-break,
  .talk-card,
  .credential-item,
  .rider-card,
  .asset-download-card,
  .credentials-table tr,
  .inbound-booking-box {
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }

  .page-break-before {
    page-break-before: always !important;
    break-before: page !important;
  }

  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid !important;
    break-after: avoid !important;
    orphans: 3;
    widows: 3;
  }

  /* 4. Typography Scaling for Print */
  h1, .speaker-hero .speaker-name {
    font-size: 20pt !important;
    line-height: 1.05 !important;
  }

  h2, .section-header .section-title {
    font-size: 13pt !important;
    margin-top: 8pt !important;
    margin-bottom: 4pt !important;
    border-bottom: 1pt solid #10110F !important;
    padding-bottom: 2pt !important;
  }

  h3, .talk-title, .rider-card-title {
    font-size: 10.5pt !important;
    margin-bottom: 2pt !important;
  }

  p, li, td, th {
    font-size: 8.5pt !important;
    line-height: 1.3 !important;
  }

  .eyebrow {
    font-size: 7.5pt !important;
    color: #10110F !important;
  }

  .mono-tag, .metric-label, .headshot-meta .meta-tag {
    font-size: 7pt !important;
  }

  /* 5. Hide Screen-Only & Interactive Elements */
  .no-print,
  .site-nav,
  .theme-toggle,
  .btn,
  .toast-notification,
  .bio-tabs-nav,
  .hero-cta-group,
  .site-footer,
  button {
    display: none !important;
  }

  /* 6. Reveal Print-Only Elements */
  .print-only {
    display: block !important;
  }

  /* Force all bio panels to display sequentially in print */
  .bio-panel {
    display: block !important;
    padding: 6pt 0 !important;
    border-bottom: 0.5pt dashed #94A3B8 !important;
  }

  .bio-panel:last-child {
    border-bottom: none !important;
  }

  /* 7. Grid & Table Layout in Print */
  .hero-grid {
    display: grid !important;
    grid-template-columns: 3fr 1fr !important;
    gap: 12pt !important;
  }

  .hero-metrics {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 6pt !important;
    padding: 4pt !important;
    border: 0.5pt solid #10110F !important;
    margin: 6pt 0 !important;
  }

  .talks-grid {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8pt !important;
  }

  .talk-card {
    border: 0.75pt solid #10110F !important;
    padding: 8pt !important;
  }

  .rider-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 8pt !important;
  }

  .rider-card {
    border: 0.5pt solid #10110F !important;
    padding: 6pt !important;
  }

  .credentials-table {
    border: 0.5pt solid #10110F !important;
    font-size: 8pt !important;
  }

  .credentials-table th,
  .credentials-table td {
    padding: 4pt 6pt !important;
    border: 0.5pt solid #10110F !important;
  }

  /* 8. URL Annotation on Printable Links */
  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-family: var(--font-mono);
    font-size: 7pt;
    color: #4A5568 !important;
  }

  a[href^="#"]:after,
  a.no-url-print:after {
    content: "" !important;
  }
}