@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root,
[data-theme="light"] {
  --color-primary: #2563eb;
  --color-primary-light: #dbeafe;
  --color-accent: #6366f1;
  --color-surface: #ffffff;
  --color-surface-muted: #f8fafc;
  --color-muted: #64748b;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-dark: #0f172a;
  --color-border: #e2e8f0;
  --color-border-subtle: rgba(226, 232, 240, 0.8);
  --color-nav-bg: rgba(255, 255, 255, 0.95);
  --color-nav-border: #f3f4f6;
  --color-body-bg: radial-gradient(ellipse at top, #ffffff 0%, #e8e8e8 55%, #d4d4d4 100%);
  --color-icon-bg: #f1f5f9;
  --color-table-head: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  --color-table-row-hover: #f8fafc;
  --color-card-border: #ffffff;
  --color-photo-stack-bg: linear-gradient(145deg, #e2e8f0 0%, #f8fafc 100%);
  --color-form-bg: rgba(255, 255, 255, 0.7);
  --color-form-focus-bg: #ffffff;
  --color-cta-bg: #111827;
  --color-cta-hover: #2563eb;
  --color-hamburger: #1f2937;
  --color-footer-bg: #1e293b;
  --color-footer-bottom: #0f172a;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-card-hover: 0 12px 40px rgba(15, 23, 42, 0.14);
  --shadow-nav-scrolled: 0 8px 32px rgba(15, 23, 42, 0.12);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-theme: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

[data-theme="dark"] {
  --color-primary: #60a5fa;
  --color-primary-light: #1e3a5f;
  --color-accent: #818cf8;
  --color-surface: #1e293b;
  --color-surface-muted: #334155;
  --color-muted: #94a3b8;
  --color-text: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-dark: #f1f5f9;
  --color-border: #334155;
  --color-border-subtle: rgba(51, 65, 85, 0.8);
  --color-nav-bg: rgba(15, 23, 42, 0.95);
  --color-nav-border: #334155;
  --color-body-bg: radial-gradient(ellipse at top, #0f172a 0%, #1e293b 55%, #0f172a 100%);
  --color-icon-bg: #334155;
  --color-table-head: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  --color-table-row-hover: #334155;
  --color-card-border: #475569;
  --color-photo-stack-bg: linear-gradient(145deg, #334155 0%, #1e293b 100%);
  --color-form-bg: rgba(30, 41, 59, 0.8);
  --color-form-focus-bg: #1e293b;
  --color-cta-bg: #3b82f6;
  --color-cta-hover: #2563eb;
  --color-hamburger: #e2e8f0;
  --color-footer-bg: #0f172a;
  --color-footer-bottom: #020617;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-nav-scrolled: 0 8px 32px rgba(0, 0, 0, 0.4);
}

html {
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  color: var(--color-text);
  transition: var(--transition-theme);
}

.page-body {
  background: var(--color-body-bg);
  min-height: 100vh;
  transition: var(--transition-theme);
}

.page-body--flex {
  display: flex;
  flex-direction: column;
}

/* ── Site nav ── */
.site-nav {
  background: var(--color-nav-bg);
  border-color: var(--color-nav-border);
  transition: var(--transition-theme), margin 0.5s ease, border-radius 0.5s ease;
}

.hamburger-line {
  background-color: var(--color-hamburger);
  transition: var(--transition-theme), transform 0.3s ease, opacity 0.3s ease;
}

.nav-cta {
  background: var(--color-cta-bg);
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-card);
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

@media (min-width: 1024px) {
  .nav-cta {
    padding: 0.625rem 1.5rem;
    font-size: 1rem;
  }
}

.nav-cta:hover {
  background: var(--color-cta-hover);
  box-shadow: var(--shadow-card-hover);
}

.nav-cta:active {
  transform: scale(0.95);
}

.mobile-menu-link {
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

.mobile-menu-link:hover {
  color: var(--color-primary);
}

.mobile-menu-link--active {
  color: var(--color-primary);
  font-weight: 700;
}

.mobile-menu-divider {
  border-color: var(--color-nav-border);
}

.icon-badge {
  background: var(--color-primary-light);
  color: var(--color-primary);
  transition: var(--transition-theme);
}

.contact-card-themed {
  background: var(--color-form-bg);
  border-color: var(--color-border-subtle);
  backdrop-filter: blur(16px);
  transition: var(--transition-theme);
}

/* ── Theme toggle switch ── */
.theme-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.theme-switch-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.theme-switch-track {
  display: flex;
  align-items: center;
  width: 3.25rem;
  height: 1.75rem;
  background: var(--color-icon-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 9999px;
  padding: 0.125rem;
  transition: var(--transition-theme);
}

.theme-switch-input:focus-visible + .theme-switch-track {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.theme-switch-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.375rem;
  height: 1.375rem;
  background: var(--color-surface);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transform: translateX(0);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), background var(--transition-theme);
}

.theme-switch-input:checked + .theme-switch-track {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.theme-switch-input:checked + .theme-switch-track .theme-switch-thumb {
  transform: translateX(1.5rem);
  background: var(--color-primary);
}

.theme-switch-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 0.75rem;
  height: 0.75rem;
  color: var(--color-muted);
  transition: opacity 0.2s ease, color var(--transition-theme);
  pointer-events: none;
  z-index: 2;
}

.theme-switch-icon--sun {
  left: 0.4375rem;
}

.theme-switch-icon--moon {
  right: 0.4375rem;
}

.theme-switch-input:not(:checked) ~ .theme-switch-icon--sun {
  color: #f59e0b;
  opacity: 1;
}

.theme-switch-input:not(:checked) ~ .theme-switch-icon--moon {
  opacity: 0.35;
}

.theme-switch-input:checked ~ .theme-switch-icon--sun {
  opacity: 0.35;
}

.theme-switch-input:checked ~ .theme-switch-icon--moon {
  color: #e2e8f0;
  opacity: 1;
}

.theme-switch--sm .theme-switch-track {
  width: 2.75rem;
  height: 1.5rem;
}

.theme-switch--sm .theme-switch-thumb {
  width: 1.125rem;
  height: 1.125rem;
}

.theme-switch--sm .theme-switch-input:checked + .theme-switch-track .theme-switch-thumb {
  transform: translateX(1.25rem);
}

/* ── Nav scroll shrink ── */
#nav-container.nav-scrolled {
  margin-top: 0.5rem;
  box-shadow: var(--shadow-nav-scrolled);
}

/* ── Hero — scroll-driven floating devices ── */
.nav-spacer {
  height: 4.25rem;
}

@media (min-width: 640px) {
  .nav-spacer {
    height: 6rem;
  }
}

.hero-devices {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: auto;
  padding: 0.25rem 1rem 1.75rem;
  overflow: visible;
  background: transparent;
}

.hero-devices-stage {
  position: relative;
  width: min(100%, 52rem);
  height: clamp(11rem, 36vh, 18rem);
  perspective: 1200px;
  transform-style: preserve-3d;
  background: transparent;
}

@media (min-width: 640px) {
  .hero-devices {
    align-items: center;
    min-height: clamp(18rem, 58vh, 32rem);
    padding: 1rem 1rem 2rem;
  }

  .hero-devices-stage {
    height: clamp(14rem, 48vh, 26rem);
  }
}

@media (min-width: 1024px) {
  .hero-devices {
    min-height: clamp(22rem, 72vh, 36rem);
    padding: 1.5rem 1rem 2.5rem;
  }
}

.hero-device {
  position: absolute;
  will-change: transform;
  background: transparent;
}

.hero-device--laptop {
  left: 4%;
  bottom: 0;
  width: min(74%, 38rem);
  z-index: 1;
  transform-origin: 50% 85%;
}

.hero-device--phone {
  left: 58%;
  bottom: 12%;
  width: min(24%, 11rem);
  z-index: 3;
  transform-origin: 50% 90%;
}

.hero-device img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
  user-select: none;
  background: transparent;
}

[data-theme="dark"] .hero-device {
  filter: none;
}

[data-theme="dark"] .hero-device img {
  filter: none;
}

@media (min-width: 640px) {
  .hero-device--phone {
    left: 56%;
    bottom: 14%;
    width: min(22%, 12.5rem);
  }
}

@media (min-width: 1024px) {
  .hero-devices-stage {
    width: min(100%, 58rem);
    height: clamp(18rem, 54vh, 30rem);
  }

  .hero-device--laptop {
    width: min(70%, 40rem);
    left: 6%;
  }

  .hero-device--phone {
    left: 54%;
    bottom: 16%;
    width: min(20%, 13.5rem);
  }
}

html.a11y-reduce-motion .hero-device {
  transition: none;
}

/* ── Hero (legacy static image) ── */
.hero-wrapper {
  animation: heroFadeIn 1s ease-out both;
}

.hero-image {
  width: 100%;
  max-width: 56rem;
  height: auto;
  object-fit: contain;
  border: none;
  box-shadow: none;
  border-radius: 0;
}

.hero-image,
.site-logo {
  transition: filter 0.35s ease;
}

[data-theme="dark"] .hero-image,
[data-theme="dark"] .site-logo {
  filter: invert(1) hue-rotate(180deg);
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(32px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ── Section headings ── */
.section-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-dark);
}

.section-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.125rem);
  color: var(--color-muted);
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

/* ── Feature cards ── */
.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-theme), border-color var(--transition-theme);
  border: 1px solid var(--color-border-subtle);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.feature-card-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
}

.feature-card-header--reliability {
  background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
  color: #1d4ed8;
}

[data-theme="dark"] .feature-card-header--reliability {
  background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
  color: #93c5fd;
}

.feature-card-header--design {
  background: linear-gradient(135deg, #ede9fe 0%, #f5f3ff 100%);
  color: #6d28d9;
}

[data-theme="dark"] .feature-card-header--design {
  background: linear-gradient(135deg, #3b0764 0%, #1e293b 100%);
  color: #c4b5fd;
}

.feature-card-header--functionality {
  background: linear-gradient(135deg, #d1fae5 0%, #ecfdf5 100%);
  color: #047857;
}

[data-theme="dark"] .feature-card-header--functionality {
  background: linear-gradient(135deg, #064e3b 0%, #1e293b 100%);
  color: #6ee7b7;
}

.feature-card-body {
  padding: 1.5rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  padding: 0.625rem 0;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  border-bottom: 1px dashed var(--color-border);
  transition: color var(--transition-theme), border-color var(--transition-theme);
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list .check-icon {
  flex-shrink: 0;
  margin-top: 0.125rem;
  color: var(--color-primary);
}

/* ── Security table ── */
.security-table-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: var(--transition-theme);
}

.security-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  transition: background var(--transition-theme);
}

.security-table thead {
  background: var(--color-table-head);
}

.security-table th {
  padding: 1rem 1.5rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  transition: color var(--transition-theme);
}

.security-table td {
  padding: 1rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  transition: color var(--transition-theme), border-color var(--transition-theme);
}

.security-table td:first-child {
  font-weight: 600;
  color: var(--color-dark);
}

.security-table .cell-with-icon {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.security-table tbody tr {
  transition: background var(--transition-base);
}

.security-table tbody tr:hover {
  background: var(--color-table-row-hover);
}

/* Mobile: card layout */
.security-cards {
  display: none;
}

@media (max-width: 640px) {
  .security-table-wrap {
    display: none;
  }

  .security-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .security-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), background var(--transition-theme), border-color var(--transition-theme);
  }

  .security-card:hover {
    transform: translateY(-2px);
  }

  .security-card-title {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
  }

  .security-card-desc {
    font-size: 0.875rem;
    color: var(--color-muted);
    padding-left: 2rem;
  }
}

/* ── Process steps ── */
.process-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
  }
}

.process-step {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1rem;
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-theme), border-color var(--transition-theme);
  position: relative;
}

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

.process-step:hover .process-icon-wrap {
  transform: scale(1.08);
  background: var(--color-primary-light);
}

.process-icon-wrap {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  border-radius: 1rem;
  background: var(--color-icon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base), background var(--transition-base);
}

.process-step h5 {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-dark);
  margin-bottom: 0.375rem;
}

.process-step p {
  font-size: 0.75rem;
  color: var(--color-muted);
  line-height: 1.5;
}

@media (min-width: 1024px) {
  .process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 2.75rem;
    right: -0.625rem;
    width: 0.5rem;
    height: 2px;
    background: var(--color-border);
    z-index: 1;
  }
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

html:not(.js-ready) .reveal {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.15s; }
.reveal-delay-5 { transition-delay: 0.25s; }
.reveal-delay-6 { transition-delay: 0.35s; }

/* ── Footer ── */
.footer-link {
  transition: color var(--transition-base), transform var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.footer-link:hover {
  color: white;
  transform: translateX(2px);
}

/* ── Contact form (talkToUs) ── */
.contact-card {
  animation: contactFadeIn 0.8s ease-out both;
}

@keyframes contactFadeIn {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.form-field {
  position: relative;
}

.form-field-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
  transition: color var(--transition-theme);
}

.form-field:has(textarea) .form-field-icon {
  top: 1.25rem;
  transform: none;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.75rem;
  background: var(--color-form-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 1rem;
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-theme);
}

.form-input::placeholder {
  color: var(--color-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background: var(--color-form-focus-bg);
}

[data-theme="dark"] .form-input:focus {
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.form-input--textarea {
  padding-top: 0.875rem;
  resize: vertical;
  min-height: 7rem;
}

.submit-btn {
  background: linear-gradient(135deg, var(--color-cta-bg) 0%, var(--color-surface-muted) 100%);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

[data-theme="light"] .submit-btn {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

[data-theme="dark"] .submit-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.submit-btn:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-1px);
}

[data-theme="light"] .submit-btn:hover {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

[data-theme="dark"] .submit-btn:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.submit-btn:active {
  transform: scale(0.98);
}

/* ── Nav link underline animation ── */
.nav-link {
  position: relative;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--transition-base);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link--active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-link--active::after {
  width: 100%;
}

/* ── Who Are We — photo card stack ── */
.about-section {
  padding: 3rem 0 4rem;
}

@media (min-width: 768px) {
  .about-section {
    padding: 4rem 0 5rem;
  }
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: minmax(280px, 42%) 1fr;
    gap: 3.5rem 4rem;
    padding: 0 1.5rem;
  }
}

.photo-stack {
  position: relative;
  width: 100%;
  max-width: 18rem;
  height: 18rem;
  margin: 0 auto;
  cursor: pointer;
}

@media (min-width: 480px) {
  .photo-stack {
    height: 20rem;
    max-width: 20rem;
  }
}

@media (min-width: 768px) {
  .photo-stack {
    margin: 0;
    max-width: 100%;
    height: 22rem;
  }
}

.photo-stack-card {
  --offset-x: 0px;
  --offset-y: 0px;
  --rotate: 0deg;
  position: absolute;
  width: min(72%, 14rem);
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
  border: 3px solid var(--color-card-border);
  background: var(--color-photo-stack-bg);
  left: var(--offset-x);
  top: var(--offset-y);
  z-index: var(--z, 1);
  transform: rotate(var(--rotate));
  transition: transform 0.45s cubic-bezier(0.34, 1.2, 0.64, 1),
              left 0.45s cubic-bezier(0.34, 1.2, 0.64, 1),
              top 0.45s cubic-bezier(0.34, 1.2, 0.64, 1),
              box-shadow var(--transition-base);
}

.photo-stack-card:nth-child(1) {
  --offset-x: 5%;
  --offset-y: 2rem;
  --rotate: -6deg;
  --z: 1;
}

.photo-stack-card:nth-child(2) {
  --offset-x: 38%;
  --offset-y: 0;
  --rotate: 5deg;
  --z: 2;
}

.photo-stack:hover .photo-stack-card:nth-child(1),
.photo-stack:focus-within .photo-stack-card:nth-child(1) {
  --offset-x: 0%;
  --offset-y: 2.5rem;
  --rotate: -9deg;
}

.photo-stack:hover .photo-stack-card:nth-child(2),
.photo-stack:focus-within .photo-stack-card:nth-child(2) {
  --offset-x: 45%;
  --offset-y: -1rem;
  --rotate: 8deg;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.2);
}

.photo-stack-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

.photo-stack:hover .photo-stack-card:hover img {
  transform: scale(1.05);
}

.photo-stack-caption {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

@media (min-width: 768px) {
  .photo-stack-caption {
    text-align: left;
  }
}

.owner-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
  transition: var(--transition-theme);
}

.owner-name {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  line-height: 1.15;
  margin-bottom: 0.375rem;
}

.owner-role {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.owner-bio {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.75;
  transition: color var(--transition-theme);
}

.owner-bio p + p {
  margin-top: 1rem;
}

.owner-highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

@media (min-width: 480px) {
  .owner-highlights {
    grid-template-columns: repeat(2, 1fr);
  }
}

.owner-highlight {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 0.875rem 1rem;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-theme), border-color var(--transition-theme);
}

.owner-highlight:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.owner-highlight-icon {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.625rem;
  background: var(--color-icon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: background var(--transition-theme);
}

.owner-highlight span {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark);
  line-height: 1.4;
}

.mission-section {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 1rem 4rem;
  text-align: center;
}

@media (min-width: 768px) {
  .mission-section {
    padding: 0 1.5rem 5rem;
  }
}

.mission-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 2rem 1.5rem;
  transition: var(--transition-theme);
}

@media (min-width: 640px) {
  .mission-card {
    padding: 2.5rem 3rem;
  }
}

.mission-quote {
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  font-weight: 500;
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-style: italic;
  transition: color var(--transition-theme);
}

.mission-quote::before {
  content: '\201C';
  color: var(--color-primary);
  font-size: 2rem;
  line-height: 0;
  vertical-align: -0.35rem;
  margin-right: 0.125rem;
  font-style: normal;
}

/* ── Footer ── */
.site-footer {
  background: var(--color-footer-bg);
  transition: background var(--transition-theme);
}

.site-footer-bottom {
  background: var(--color-footer-bottom);
  transition: background var(--transition-theme);
}

/* ── Themed text utilities ── */
.form-label-themed {
  color: var(--color-text-secondary);
  transition: color var(--transition-theme);
}

.text-themed-title {
  color: var(--color-text);
  transition: color var(--transition-theme);
}

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

.link-themed {
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

.link-themed:hover {
  color: var(--color-primary);
}

/* ── Projects ── */
.projects-section {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

@media (min-width: 768px) {
  .projects-section {
    padding: 0 1.5rem 5rem;
  }
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-theme), border-color var(--transition-theme);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.project-card-thumb-link {
  display: block;
  text-decoration: none;
}

.project-card-thumb {
  aspect-ratio: 16 / 10;
  background: var(--color-icon-bg);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.25rem;
}

.project-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.45s ease;
}

.project-card:hover .project-card-thumb img {
  transform: scale(1.04);
}

.project-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.project-card-tags,
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.project-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  transition: var(--transition-theme);
}

.project-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  line-height: 1.25;
}

.project-card-title a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-base);
}

.project-card-title a:hover {
  color: var(--color-primary);
}

.project-card-summary {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.project-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  transition: gap var(--transition-base), color var(--transition-base);
}

.project-card-link:hover {
  gap: 0.625rem;
}

.project-detail-section {
  max-width: 56rem;
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

@media (min-width: 768px) {
  .project-detail-section {
    padding: 0 1.5rem 5rem;
  }
}

.project-header {
  margin-bottom: 2.5rem;
}

.project-back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-decoration: none;
}

.project-header-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .project-header-main {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
  }
}

.project-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.project-description {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 40rem;
}

.project-visit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-shrink: 0;
  text-decoration: none;
  white-space: nowrap;
}

.project-screenshots {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .project-screenshots {
    gap: 2.5rem;
  }
}

.project-screenshot-frame {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition-theme);
}

.project-screenshot-bar {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface-muted);
  border-bottom: 1px solid var(--color-border);
}

.project-screenshot-bar span {
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  background: var(--color-border);
}

.project-screenshot-bar span:first-child {
  background: #f87171;
}

.project-screenshot-bar span:nth-child(2) {
  background: #fbbf24;
}

.project-screenshot-bar span:nth-child(3) {
  background: #34d399;
}

.project-screenshot-body {
  aspect-ratio: 16 / 10;
  background: var(--color-icon-bg);
  overflow: hidden;
}

.project-screenshot-body img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-screenshot-caption {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-muted);
}

.project-screenshot-mockup {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: transparent;
}

.project-screenshot-mockup img {
  width: 100%;
  height: auto;
  display: block;
}

.project-screenshot--mockup {
  max-width: 56rem;
  margin-inline: auto;
}

.project-img--fallback {
  display: none;
}

.project-screenshot-body:has(.project-img--fallback),
.project-card-thumb:has(.project-img--fallback) {
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-screenshot-body:has(.project-img--fallback)::after,
.project-card-thumb:has(.project-img--fallback)::after {
  content: '';
  width: 3rem;
  height: 3rem;
  background: var(--color-muted);
  opacity: 0.25;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Crect width='18' height='18' x='3' y='3' rx='2' ry='2'/%3E%3Ccircle cx='9' cy='9' r='2'/%3E%3Cpath d='m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21'/%3E%3C/svg%3E") center / contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Crect width='18' height='18' x='3' y='3' rx='2' ry='2'/%3E%3Ccircle cx='9' cy='9' r='2'/%3E%3Cpath d='m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21'/%3E%3C/svg%3E") center / contain no-repeat;
}

.project-not-found {
  text-align: center;
  padding: 3rem 1rem;
}

.project-not-found-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 2.5rem 1.5rem;
  max-width: 28rem;
  margin: 0 auto;
}

.is-hidden {
  display: none !important;
}

.projects-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
}

.project-detail-section--spaced {
  padding-top: 0.5rem;
}

@media (min-width: 640px) {
  .project-detail-section--spaced {
    padding-top: 1rem;
  }
}

/* ── Accessibility ── */
.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.625rem 1rem;
  border-radius: 0.75rem;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

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

a:focus-visible,
button:focus-visible,
.nav-link:focus-visible,
.nav-cta:focus-visible,
.mobile-menu-link:focus-visible,
.footer-link:focus-visible,
.project-card-link:focus-visible,
.project-card-thumb-link:focus-visible,
.project-back:focus-visible,
.link-themed:focus-visible,
.submit-btn:focus-visible,
.mobile-menu-toggle:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.nav-link[aria-current="page"],
.mobile-menu-link[aria-current="page"] {
  color: var(--color-primary);
  font-weight: 700;
}

#mobile-menu[aria-hidden="true"] {
  visibility: hidden;
}

#mobile-menu[aria-hidden="false"] {
  visibility: visible;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  html.js-ready .reveal:not(.visible) {
    opacity: 1;
    transform: none;
  }
}

/* ── Accessibility widget ── */
.a11y-widget {
  position: fixed;
  right: 1.25rem;
  bottom: 1.5rem;
  top: auto;
  transform: none;
  z-index: 9999;
}

.a11y-widget-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border: 2px solid #ffffff;
  border-radius: 9999px;
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.55);
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.a11y-widget-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 36px rgba(37, 99, 235, 0.65);
}

.a11y-widget-icon {
  width: 1.75rem;
  height: 1.75rem;
}

.a11y-panel {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.75rem);
  top: auto;
  transform: none;
  width: min(18rem, calc(100vw - 2.5rem));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card-hover);
  overflow: hidden;
}

.a11y-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-muted);
}

.a11y-panel-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text);
}

.a11y-panel-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--color-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.a11y-panel-close:hover {
  background: var(--color-icon-bg);
  color: var(--color-text);
}

.a11y-panel-body {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding: 1rem;
}

.a11y-option-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.a11y-btn-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.375rem;
}

.a11y-option-btn,
.a11y-toggle-btn,
.a11y-reset-btn {
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.a11y-option-btn {
  padding: 0.5rem 0.625rem;
}

.a11y-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.75rem 0.875rem;
  text-align: right;
}

.a11y-reset-btn {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.75rem;
  background: var(--color-icon-bg);
  color: var(--color-primary);
}

.a11y-option-btn:hover,
.a11y-toggle-btn:hover,
.a11y-reset-btn:hover {
  border-color: var(--color-primary);
}

.a11y-option-btn.is-active,
.a11y-toggle-btn.is-active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.a11y-widget-toggle:focus-visible,
.a11y-panel-close:focus-visible,
.a11y-option-btn:focus-visible,
.a11y-toggle-btn:focus-visible,
.a11y-reset-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

html.a11y-text-110 {
  font-size: 110%;
}

html.a11y-text-125 {
  font-size: 125%;
}

html.a11y-text-150 {
  font-size: 150%;
}

html.a11y-readable body {
  letter-spacing: 0.035em;
  line-height: 1.75;
}

html.a11y-highlight-links a {
  text-decoration: underline !important;
  text-decoration-thickness: 2px !important;
  text-underline-offset: 3px;
}

html.a11y-high-contrast[data-theme="light"] {
  --color-text: #000000;
  --color-text-secondary: #1a1a1a;
  --color-body-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-muted: #f0f0f0;
  --color-border: #000000;
  --color-primary: #0000cc;
  --color-muted: #333333;
}

html.a11y-high-contrast[data-theme="dark"] {
  --color-text: #ffffff;
  --color-text-secondary: #f0f0f0;
  --color-body-bg: #000000;
  --color-surface: #111111;
  --color-surface-muted: #1a1a1a;
  --color-border: #ffffff;
  --color-primary: #66b3ff;
  --color-muted: #cccccc;
}

html.a11y-reduce-motion *,
html.a11y-reduce-motion *::before,
html.a11y-reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

html.a11y-reduce-motion .reveal,
html.a11y-reduce-motion html.js-ready .reveal:not(.visible) {
  opacity: 1 !important;
  transform: none !important;
}