/* ==========================================================================
   M365 Academy — design system & site styles
   ========================================================================== */

:root {
  /* Brand palette (Fluent-inspired, not Microsoft's registered marks) */
  --color-primary: #2554c7;
  --color-primary-dark: #17356f;
  --color-primary-light: #4f7fe0;
  --color-secondary: #6d3ce9;
  --color-azure: #0ea5e9;
  --color-m365: #2554c7;

  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fb;
  --color-bg-dark: #10192f;
  --color-surface: #ffffff;
  --color-border: #e3e7f0;

  --color-text: #191d2b;
  --color-text-muted: #5b6272;
  --color-text-on-dark: #eef1fa;
  --color-text-on-dark-muted: #a9b1c9;

  --gradient-hero: linear-gradient(135deg, #10192f 0%, #17356f 35%, #2554c7 70%, #6d3ce9 100%);
  --gradient-accent: linear-gradient(135deg, #2554c7, #6d3ce9);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(16, 25, 47, 0.06), 0 1px 1px rgba(16, 25, 47, 0.04);
  --shadow-md: 0 8px 24px rgba(16, 25, 47, 0.10);
  --shadow-lg: 0 20px 48px rgba(16, 25, 47, 0.16);

  --container-width: 1180px;
}

/* ---- Reset --------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  text-decoration: underline;
}

ul {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  margin: 0 0 0.5em;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
}

button {
  font-family: inherit;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 1rem;
}

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

/* ---- Layout --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: clamp(3rem, 6vw, 5.5rem);
}

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

.section-bg-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.section-header {
  max-width: 680px;
  margin-bottom: 2.5rem;
}

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

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
}

.section-bg-dark .eyebrow {
  color: #b9a4ff;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.section-bg-dark .section-header p {
  color: var(--color-text-on-dark-muted);
}

/* ---- Buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.5);
  color: inherit;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

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

.btn-light:hover {
  background: #eef1fa;
}

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

.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

/* ---- Site header / nav ------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.55rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-text);
}

.brand:hover {
  text-decoration: none;
}

.brand-logo {
  height: 68px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  color: var(--color-text);
}

.nav-toggle svg {
  width: 28px;
  height: 28px;
}

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem 1.5rem;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-cta .btn-outline-desktop {
    display: none;
  }
}

/* ---- Hero ---------------------------------------------------------------- */
.hero {
  background: var(--gradient-hero);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.12), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(255, 255, 255, 0.10), transparent 40%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  margin-bottom: 0.6em;
}

.hero .lede {
  font-size: 1.15rem;
  color: rgba(238, 241, 250, 0.92);
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: rgba(238, 241, 250, 0.9);
  font-weight: 600;
}

.hero-badge svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.hero-visual {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(6px);
}

.hero-visual-card {
  background: rgba(16, 25, 47, 0.55);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.hero-visual-card:last-child {
  margin-bottom: 0;
}

.hero-visual-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: var(--gradient-accent);
}

.hero-visual-icon svg {
  width: 22px;
  height: 22px;
  color: #fff;
}

.hero-visual-text strong {
  display: block;
  font-size: 0.95rem;
}

.hero-visual-text span {
  font-size: 0.82rem;
  color: rgba(238, 241, 250, 0.75);
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
}

/* ---- Trust bar ------------------------------------------------------------ */
.trust-bar {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.trust-bar-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.5rem;
  align-items: center;
  justify-content: center;
  padding-block: 1.5rem;
  text-align: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.trust-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ---- Cards grid ------------------------------------------------------------ */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (max-width: 960px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--gradient-accent);
  margin-bottom: 1.1rem;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

.feature-card h3 {
  font-size: 1.08rem;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ---- Course cards ----------------------------------------------------------- */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.25rem;
}

.filter-tab {
  border: 1px solid var(--color-border);
  background: #fff;
  padding: 0.55rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.15s ease;
}

.filter-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-tab.is-active {
  background: var(--gradient-accent);
  border-color: transparent;
  color: #fff;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

@media (max-width: 760px) {
  .course-grid {
    grid-template-columns: 1fr;
  }
}

.course-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.course-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-m365 {
  background: rgba(37, 84, 199, 0.12);
  color: var(--color-primary);
}

.badge-azure {
  background: rgba(14, 165, 233, 0.12);
  color: #0369a1;
}

.badge-mct {
  background: rgba(109, 60, 233, 0.14);
  color: var(--color-secondary);
}

.course-code {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 700;
}

.course-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.35rem;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.9rem;
}

.course-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.course-meta svg {
  width: 16px;
  height: 16px;
}

.course-card p.course-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.course-card details {
  margin-top: 0.5rem;
  margin-bottom: 1.1rem;
}

.course-card summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
  list-style: none;
}

.course-card summary::-webkit-details-marker {
  display: none;
}

.course-card summary::after {
  content: "▾";
  margin-left: 0.4rem;
  display: inline-block;
  transition: transform 0.15s ease;
}

.course-card details[open] summary::after {
  transform: rotate(180deg);
}

.course-card .syllabus {
  margin-top: 0.75rem;
  padding-left: 1.1rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.course-card .syllabus li {
  margin-bottom: 0.4rem;
}

.course-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* ---- Path / track diagram --------------------------------------------------- */
.tracks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem;
}

@media (max-width: 760px) {
  .tracks {
    grid-template-columns: 1fr;
  }
}

.track-card {
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: #fff;
}

.track-card.m365 {
  background: linear-gradient(135deg, #17356f, #2554c7);
}

.track-card.azure {
  background: linear-gradient(135deg, #0c4a6e, #0ea5e9);
}

.track-card h3 {
  font-size: 1.3rem;
}

.track-steps {
  list-style: none;
  margin-top: 1.25rem;
}

.track-steps li {
  display: flex;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.92rem;
}

.track-steps li:first-child {
  border-top: none;
}

.track-steps .step-num {
  font-weight: 800;
  opacity: 0.7;
}

/* ---- CTA banner -------------------------------------------------------------- */
.cta-banner {
  background: var(--gradient-hero);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3.5rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-banner h2 {
  margin-bottom: 0.4rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.cta-banner p {
  color: rgba(238, 241, 250, 0.85);
  margin-bottom: 0;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.checklist {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.checklist li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.96rem;
  color: var(--color-text-muted);
}

.checklist svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* ---- Date / cohort announcement banner ----------------------------------------- */
.date-banner {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
}

.date-banner-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.date-banner-left .icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.date-banner-left .icon-circle svg {
  width: 24px;
  height: 24px;
}

.date-banner-left .date-text .label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.date-banner-left .date-text .value {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary-dark);
}

.date-banner-right {
  text-align: right;
}

.date-banner-right strong {
  display: block;
  font-size: 0.95rem;
}

.date-banner-right span {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

@media (max-width: 640px) {
  .date-banner-right {
    text-align: left;
  }
}

/* ---- Note card ------------------------------------------------------------------ */
.note-card {
  border: 1px dashed var(--color-border);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

/* ---- Testimonials ---------------------------------------------------------------- */
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.testimonial-mark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.75rem;
  line-height: 1;
  color: var(--color-secondary);
  opacity: 0.35;
  margin-bottom: 0.25rem;
}

.testimonial-quote {
  color: var(--color-text);
  font-size: 0.98rem;
  flex: 1;
  margin-bottom: 1.25rem;
}

.testimonial-meta {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  font-weight: 700;
  border-top: 1px solid var(--color-border);
  padding-top: 0.85rem;
}

.testimonial-featured {
  background: var(--gradient-hero);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3rem);
  margin-bottom: 2.5rem;
}

.testimonial-featured .testimonial-mark {
  color: #fff;
  opacity: 0.5;
}

.testimonial-featured .testimonial-quote {
  color: rgba(238, 241, 250, 0.95);
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.testimonial-featured .testimonial-meta {
  color: rgba(238, 241, 250, 0.75);
  border-top-color: rgba(255, 255, 255, 0.2);
}

/* ---- Forms --------------------------------------------------------------------- */
.form-grid {
  display: grid;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.4rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.96rem;
  background: #fff;
  color: var(--color-text);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--color-primary);
}

.field textarea {
  resize: vertical;
  min-height: 130px;
}

.field-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
}

.field-error {
  font-size: 0.82rem;
  color: #c02b3c;
  margin-top: 0.3rem;
  display: none;
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: #c02b3c;
}

.field.has-error .field-error {
  display: block;
}

/* Honeypot: hidden from sighted users and keyboard tab order, but present in the DOM for bots that auto-fill fields */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  display: none;
}

.form-status.is-visible {
  display: block;
}

.form-status.success {
  background: rgba(22, 163, 74, 0.12);
  color: #15803d;
}

.form-status.error {
  background: rgba(220, 38, 38, 0.1);
  color: #b91c1c;
}

/* ---- Contact info cards --------------------------------------------------------- */
.contact-info-list {
  display: grid;
  gap: 1rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.contact-info-item .feature-icon {
  margin-bottom: 0;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.contact-info-item h3 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.contact-info-item p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

/* ---- Footer ------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark-muted);
}

.footer-inner {
  padding-block: 3.5rem 2rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

@media (max-width: 860px) {
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

.footer-brand p {
  margin-top: 0.9rem;
  font-size: 0.92rem;
  max-width: 32ch;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.footer-col a {
  color: var(--color-text-on-dark-muted);
  font-size: 0.92rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-block: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: grid;
  place-items: center;
  color: #fff;
}

.social-links svg {
  width: 17px;
  height: 17px;
}

/* ---- Page header (inner pages) ------------------------------------------------------ */
.page-header {
  background: var(--gradient-hero);
  color: #fff;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}

.page-header .eyebrow {
  color: #d9cbff;
}

.page-header h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  max-width: 40ch;
}

.page-header p {
  color: rgba(238, 241, 250, 0.9);
  max-width: 60ch;
  font-size: 1.05rem;
  margin-bottom: 0;
}

.breadcrumb {
  font-size: 0.85rem;
  color: rgba(238, 241, 250, 0.75);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: rgba(238, 241, 250, 0.75);
}

/* ---- 404 -------------------------------------------------------------------------- */
.error-page {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding-block: 4rem;
}

.error-page .code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}

/* ---- About page bio ----------------------------------------------------------------- */
.bio-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 760px) {
  .bio-layout {
    grid-template-columns: 1fr;
  }
}

.bio-photo {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: var(--gradient-accent);
  display: grid;
  place-items: center;
  color: #fff;
  padding: 12px;
  box-shadow: var(--shadow-md);
}

.bio-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 6px);
  display: block;
}

.credential-list {
  list-style: none;
  display: grid;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.credential-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.credential-list svg {
  width: 20px;
  height: 20px;
  color: var(--color-secondary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* ---- Copilot chat widget ----------------------------------------------------------- */
#copilot-widget {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 1000;
}

.copilot-launcher {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-lg);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.copilot-launcher:hover {
  transform: translateY(-2px);
}

.copilot-launcher svg {
  width: 26px;
  height: 26px;
  grid-area: 1 / 1;
}

.copilot-launcher-icon-close {
  display: none;
}

.copilot-launcher[aria-expanded="true"] .copilot-launcher-icon-open {
  display: none;
}

.copilot-launcher[aria-expanded="true"] .copilot-launcher-icon-close {
  display: block;
}

.copilot-panel {
  display: flex;
  flex-direction: column;
  position: absolute;
  right: 0;
  bottom: calc(100% + 1rem);
  width: min(380px, calc(100vw - 3rem));
  height: min(600px, calc(100vh - 8rem));
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.copilot-panel[hidden] {
  display: none;
}

.copilot-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--gradient-hero);
  color: #fff;
  flex-shrink: 0;
}

.copilot-panel-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 0.98rem;
}

.copilot-panel-title svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.copilot-close-btn {
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 0.25rem;
  display: grid;
  place-items: center;
  border-radius: 6px;
  opacity: 0.85;
}

.copilot-close-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.14);
}

.copilot-close-btn svg {
  width: 18px;
  height: 18px;
}

.copilot-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--color-bg-alt);
}

.copilot-intro {
  margin: 0;
  padding: 0.9rem 1.1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.copilot-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.copilot-message {
  display: flex;
}

.copilot-message-user {
  justify-content: flex-end;
}

.copilot-message-bot {
  justify-content: flex-start;
}

.copilot-bubble {
  max-width: 82%;
  padding: 0.55rem 0.85rem;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
}

.copilot-message-user .copilot-bubble {
  background: var(--gradient-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.copilot-message-bot .copilot-bubble {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: 4px;
}

.copilot-bubble.is-error {
  color: #b91c1c;
  border-color: #fecaca;
}

.copilot-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.7rem 0.9rem;
}

.copilot-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
  opacity: 0.5;
  animation: copilot-typing-bounce 1.2s infinite ease-in-out;
}

.copilot-typing span:nth-child(2) {
  animation-delay: 0.15s;
}

.copilot-typing span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes copilot-typing-bounce {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.5;
  }
  30% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

.copilot-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  flex-shrink: 0;
}

.copilot-input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.copilot-input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.copilot-input:disabled {
  opacity: 0.6;
}

.copilot-send-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: var(--gradient-accent);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.copilot-send-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.copilot-send-btn svg {
  width: 17px;
  height: 17px;
}

@media (max-width: 480px) {
  #copilot-widget {
    right: 1rem;
    bottom: 1rem;
  }

  .copilot-panel {
    width: calc(100vw - 2rem);
    height: min(70vh, 600px);
  }
}