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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--weight-regular);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-page);
}

/* ========================================
   Logo
   ======================================== */
.logo {
  display: inline-block;
}

.logo img {
  display: block;
  height: auto;
}

.logo--full img { width: 180px; }
.logo--compact img { width: 120px; }
.logo--icon img { width: 40px; }
.logo--header img { width: 140px; }

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6,
.heading-hero, .heading-2xl, .heading-xl,
.heading-lg, .heading-md, .heading-sm {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.heading-hero { font-size: var(--heading-hero); }
.heading-2xl  { font-size: var(--heading-2xl); }
.heading-xl   { font-size: var(--heading-xl); }
.heading-lg   { font-size: var(--heading-lg); }
.heading-md   { font-size: var(--heading-md); }
.heading-sm   { font-size: var(--heading-sm); }

.text-xl   { font-size: var(--text-xl); }
.text-lg   { font-size: var(--text-lg); }
.text-md   { font-size: var(--text-md); }
.text-base { font-size: var(--text-base); }
.text-sm   { font-size: var(--text-sm); }
.text-xs   { font-size: var(--text-xs); }

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

p {
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  max-width: 65ch;
}

/* ========================================
   Anchor / Links
   ======================================== */
.anchor {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.anchor:hover {
  text-decoration: underline;
  color: var(--color-primary-hover);
}

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

.anchor--muted:hover {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.anchor--nav {
  color: var(--color-text-primary);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  font-size: var(--text-sm);
  text-transform: uppercase;
}

.anchor--nav:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.anchor--external::after {
  content: '\f08e';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.7em;
  margin-left: var(--space-1);
  opacity: 0.6;
}

/* ========================================
   Button
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-primary);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn--sm {
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}

.btn--md {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
}

.btn--lg {
  font-size: var(--text-md);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: var(--shadow-glow);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary-muted);
}

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

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

.btn--danger {
  background-color: var(--color-error);
  color: var(--color-white);
  border-color: var(--color-error);
}

.btn--danger:hover {
  opacity: 0.9;
}

.btn:disabled,
.btn--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--full {
  width: 100%;
}

/* ========================================
   Tag / Badge
   ======================================== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-primary);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tag--sm {
  font-size: var(--text-xs);
  padding: 2px var(--space-2);
}

.tag--md {
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-3);
}

.tag--default {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-secondary);
}

.tag--brand {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
}

.tag--success {
  background-color: rgba(20, 203, 89, 0.15);
  color: var(--color-success);
}

.tag--warning {
  background-color: rgba(255, 194, 0, 0.15);
  color: var(--color-warning);
}

.tag--error {
  background-color: rgba(228, 55, 55, 0.15);
  color: var(--color-error);
}

.tag--outline {
  background-color: transparent;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-secondary);
}

/* ========================================
   Form Field
   ======================================== */
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.form-field + .form-field {
  margin-top: var(--space-4);
}

.form-field__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
}

.form-field__label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-field__input,
.form-field__textarea,
.form-field__select {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-text-primary);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  transition: var(--transition-fast);
  width: 100%;
  outline: none;
}

.form-field__input::placeholder,
.form-field__textarea::placeholder {
  color: var(--color-text-muted);
}

.form-field__input:focus,
.form-field__textarea:focus,
.form-field__select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.form-field__input--error,
.form-field__textarea--error {
  border-color: var(--color-error);
}

.form-field__input--error:focus,
.form-field__textarea--error:focus {
  box-shadow: 0 0 0 3px rgba(228, 55, 55, 0.15);
}

.form-field__textarea {
  min-height: 120px;
  resize: vertical;
}

.form-field__help {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form-field__error {
  font-size: var(--text-sm);
  color: var(--color-error);
}

.form-field__input:disabled,
.form-field__textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--color-bg-elevated);
}

/* ========================================
   Custom Select (rich dropdown)
   ======================================== */
.custom-select {
  position: relative;
}

.custom-select__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-text-primary);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: var(--transition-fast);
  width: 100%;
}

.custom-select__trigger:hover {
  border-color: var(--color-border-strong);
}

.custom-select--open .custom-select__trigger {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.custom-select__trigger-text {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

.custom-select__icon {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  transition: var(--transition-fast);
}

.custom-select--open .custom-select__icon {
  transform: rotate(180deg);
}

.custom-select__dropdown {
  position: absolute;
  top: calc(100% + var(--space-1));
  left: 0;
  right: 0;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: 50;
  overflow: hidden;
  display: none;
}

.custom-select--open .custom-select__dropdown {
  display: block;
}

.custom-select__option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.custom-select__option:hover {
  background-color: var(--color-primary-muted);
}

.custom-select__option--selected {
  background-color: var(--color-primary-muted);
}

.custom-select__option-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: var(--text-sm);
}

.custom-select__option-content {
  flex: 1;
  min-width: 0;
}

.custom-select__option-label {
  font-weight: var(--weight-medium);
}

.custom-select__option-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 1px;
}

.custom-select__option-check {
  color: var(--color-primary);
  font-size: var(--text-sm);
  opacity: 0;
}

.custom-select__option--selected .custom-select__option-check {
  opacity: 1;
}

/* Native select fallback (simple forms) */
.select-wrapper {
  position: relative;
}

.select-wrapper .form-field__select {
  appearance: none;
  padding-right: var(--space-10);
  cursor: pointer;
}

.select-wrapper::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

/* ========================================
   Checkbox
   ======================================== */
.checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  cursor: pointer;
}

.checkbox__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox__box {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  margin-top: 2px;
}

.checkbox__input:checked + .checkbox__box {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox__input:checked + .checkbox__box .fa-check {
  display: block;
  color: var(--color-text-inverse);
  font-size: 11px;
}

.checkbox__box .fa-check {
  display: none;
}

.checkbox__input:focus + .checkbox__box {
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.checkbox__label {
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.checkbox__description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ========================================
   Radio Group
   ======================================== */
.radio-group__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.radio-group__options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.radio {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  cursor: pointer;
}

.radio__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio__circle {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  background-color: var(--color-bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  margin-top: 2px;
}

.radio__input:checked + .radio__circle {
  border-color: var(--color-primary);
}

.radio__input:checked + .radio__circle::after {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
}

.radio__input:focus + .radio__circle {
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.radio__label {
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

/* ========================================
   File Upload
   ======================================== */
.file-upload {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-elevated);
  padding: var(--space-8);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.file-upload:hover,
.file-upload--dragover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-muted);
}

.file-upload__icon {
  font-size: var(--heading-md);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.file-upload:hover .file-upload__icon,
.file-upload--dragover .file-upload__icon {
  color: var(--color-primary);
}

.file-upload__text {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.file-upload__hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.file-upload__selected {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-sm);
  margin-top: var(--space-3);
}

.file-upload__filename {
  flex: 1;
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.file-upload__size {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.file-upload__remove {
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
  background: none;
  border: none;
  font-size: var(--text-base);
}

.file-upload__remove:hover {
  color: var(--color-error);
}

/* ========================================
   Cards — Shared base
   ======================================== */
.card {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-5);
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--heading-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.card__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

/* Pillar Card */
.pillar-card {
  text-align: center;
  padding: var(--space-6);
}

.pillar-card__icon {
  font-size: var(--heading-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

/* Feature Card */
.feature-card {
  padding: var(--space-6);
}

.feature-card__icon {
  font-size: var(--heading-md);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

/* Vertical Card */
.vertical-card {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: flex-end;
  background-color: var(--color-bg-elevated);
  overflow: hidden;
}

/* Dark gradient overlay (default) */
.vertical-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0.1));
  z-index: 1;
  transition: opacity var(--duration-base) var(--ease-standard);
}

/* Brand gradient overlay (hover) — sits on top, fades in */
.vertical-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-brand-alt);
  opacity: 0;
  z-index: 1;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.vertical-card:hover::after {
  opacity: 0.85;
}

.vertical-card .card__body {
  position: relative;
  z-index: 2;
  width: 100%;
}

/* Blog Post Card */
.blog-card__image {
  width: 100%;
  height: 200px;
  background-color: var(--color-bg-elevated);
  object-fit: cover;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

/* Role Card */
.role-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-border);
}

.role-card__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.role-card__meta {
  display: flex;
  gap: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.role-card__meta i {
  margin-right: var(--space-1);
}

.role-card__arrow {
  color: var(--color-text-muted);
  font-size: var(--text-md);
  transition: var(--transition-fast);
}

.role-card:hover .role-card__arrow {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* Lab Project Card */
.lab-card__image {
  width: 100%;
  height: 180px;
  background-color: var(--color-bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--heading-lg);
}

/* ========================================
   Hero Banner
   ======================================== */
.hero {
  padding: var(--space-24) 0 var(--space-16);
  text-align: center;
}

.hero--left {
  text-align: left;
}

.hero__headline {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.hero__headline--hero { font-size: var(--heading-hero); }
.hero__headline--standard { font-size: var(--heading-xl); }

.hero__subtitle {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 60ch;
}

.hero--center .hero__subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* Hero — Video Background */
.hero--video {
  position: relative;
  overflow: hidden;
}

.hero__video-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__video-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(9, 9, 9, 0.15) 0%,
    rgba(9, 9, 9, 0.05) 40%,
    rgba(9, 9, 9, 0.4) 100%
  );
  z-index: 1;
}

.hero--video .hero__headline,
.hero--video .hero__subtitle,
.hero--video .btn {
  position: relative;
  z-index: 2;
}

/* ========================================
   Section Heading
   ======================================== */
.section-heading {
  margin-bottom: var(--space-8);
}

.section-heading--center {
  text-align: center;
}

.section-heading__title {
  font-family: var(--font-heading);
  font-size: var(--heading-lg);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.section-heading__subtitle {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

/* ========================================
   Stat Display
   ======================================== */
.stat {
  text-align: center;
}

.stat__value {
  font-family: var(--font-heading);
  font-size: var(--heading-xl);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  line-height: var(--leading-tight);
}

.stat__label {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

/* ========================================
   CTA Block
   ======================================== */
.cta-block {
  text-align: center;
  padding: var(--space-16) var(--space-8);
  border-radius: var(--radius-lg);
}

.cta-block--default {
  background-color: var(--color-bg-elevated);
}

.cta-block--gradient {
  background: var(--gradient-brand);
}

.cta-block__headline {
  font-family: var(--font-heading);
  font-size: var(--heading-md);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.cta-block__body {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 50ch;
  margin-left: auto;
  margin-right: auto;
}

.cta-block--gradient .cta-block__body {
  color: rgba(255, 255, 255, 0.85);
}

/* ========================================
   Icon List
   ======================================== */
.icon-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.icon-list__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.icon-list__item i {
  color: var(--color-primary);
  width: 1.25em;
  text-align: center;
}

/* ========================================
   Partner Logo Strip
   ======================================== */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-8) 0;
}

.partner-logos__item {
  height: 52px;
  opacity: 0.6;
  filter: grayscale(1) brightness(2);
  transition: var(--transition-base);
}

.partner-logos__item:hover {
  opacity: 1;
  filter: none;
}

/* ========================================
   Accordion
   ======================================== */
.accordion {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion__item {
  border-bottom: 1px solid var(--color-border-subtle);
}

.accordion__item:last-child {
  border-bottom: none;
}

.accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background-color: var(--color-bg-surface);
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--heading-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}

.accordion__header:hover {
  background-color: var(--color-bg-elevated);
}

.accordion__icon {
  color: var(--color-primary);
  transition: var(--transition-fast);
}

.accordion__item--open .accordion__icon {
  transform: rotate(180deg);
}

.accordion__item--open .accordion__header {
  color: var(--color-primary);
}

.accordion__content {
  padding: 0 var(--space-5) var(--space-5);
  background-color: var(--color-bg-surface);
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

/* ========================================
   Tabs
   ======================================== */
.tabs__bar {
  display: flex;
  gap: var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.tabs__bar::-webkit-scrollbar {
  display: none;
}

.tabs__tab {
  padding: var(--space-3) var(--space-1);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-fast);
  margin-bottom: -1px;
}

.tabs__tab:hover {
  color: var(--color-text-primary);
}

.tabs__tab--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

.tabs--pill .tabs__bar {
  border-bottom: none;
  gap: var(--space-2);
}

.tabs--pill .tabs__tab {
  border-bottom: none;
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-bg-elevated);
}

.tabs--pill .tabs__tab--active {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
}

.tabs__panel {
  padding-top: var(--space-6);
}

/* ========================================
   Toast / Notification
   ======================================== */
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 3px solid;
  min-width: 300px;
  max-width: 420px;
}

.toast--success { border-left-color: var(--color-success); }
.toast--error   { border-left-color: var(--color-error); }
.toast--info    { border-left-color: var(--color-primary); }

.toast__icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.toast--success .toast__icon { color: var(--color-success); }
.toast--error .toast__icon   { color: var(--color-error); }
.toast--info .toast__icon    { color: var(--color-primary); }

.toast__content {
  flex: 1;
}

.toast__message {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
}

.toast__dismiss {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  font-size: var(--text-sm);
}

.toast__dismiss:hover {
  color: var(--color-text-primary);
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
}

.empty-state__icon {
  font-size: var(--heading-xl);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.empty-state__title {
  font-family: var(--font-heading);
  font-size: var(--heading-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-state__message {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 40ch;
  margin: 0 auto;
}

/* ========================================
   Site Header (simplified for style guide)
   ======================================== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-8);
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ========================================
   Site Footer (simplified for style guide)
   ======================================== */
.site-footer {
  padding: var(--space-12) var(--space-8);
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-subtle);
}

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

.site-footer__heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
}

.site-footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
}

.site-footer__social {
  display: flex;
  gap: var(--space-4);
}

.site-footer__social a {
  color: var(--color-text-muted);
  font-size: var(--text-md);
  transition: var(--transition-fast);
}

.site-footer__social a:hover {
  color: var(--color-primary);
}

.site-footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ========================================
   Grid
   ======================================== */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

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

/* ========================================
   Container
   ======================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

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

/* ========================================
   Section Padding
   ======================================== */
.section { width: 100%; }
.section--bg-page { background-color: var(--color-bg-page); }
.section--bg-surface { background-color: var(--color-bg-surface); }
.section--bg-elevated { background-color: var(--color-bg-elevated); }
.section--bg-inverse { background-color: var(--color-bg-inverse); }

.section--pad-sm { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.section--pad-md { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.section--pad-lg { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.section--pad-xl { padding-top: var(--space-24); padding-bottom: var(--space-24); }

/* ========================================
   Two Column Layout
   ======================================== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.two-col--reversed { direction: rtl; }
.two-col--reversed > * { direction: ltr; }
.two-col--align-top { align-items: start; }
.two-col--align-bottom { align-items: end; }

@media (max-width: 640px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .two-col--reversed { direction: ltr; }
}

/* ========================================
   Modal
   ======================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay-heavy);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-dialog {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-dialog--sm { width: 24rem; }
.modal-dialog--md { width: 32rem; }
.modal-dialog--lg { width: 48rem; }
.modal-dialog--full { width: calc(100vw - var(--space-8)); }

.modal-dialog--video {
  background: black;
  border: none;
  width: min(90vw, 960px);
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.modal-dialog--video video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.modal__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--text-md);
  cursor: pointer;
  z-index: 1;
  transition: var(--transition-fast);
}

.modal__close:hover { color: var(--color-text-primary); }
.modal__header { padding: var(--space-6) var(--space-6) 0; }
.modal__body { padding: var(--space-6); }

@media (max-width: 640px) {
  .modal-dialog--md, .modal-dialog--lg {
    width: 100%;
    max-width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-top: auto;
    max-height: 85vh;
  }
}

/* ========================================
   Video Showcase
   ======================================== */
.video-showcase {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 16/9;
  background-color: var(--color-bg-elevated);
}

.video-showcase__poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-showcase__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  transition: var(--transition-base);
}

.video-showcase__play i {
  font-size: 4rem;
  color: var(--color-white);
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
  transition: var(--transition-base);
}

.video-showcase:hover .video-showcase__play {
  background: rgba(0, 0, 0, 0.15);
}

.video-showcase:hover .video-showcase__play i {
  transform: scale(1.1);
  color: var(--color-primary);
}

/* ========================================
   Mobile Navigation Overlay
   ======================================== */
.mobile-nav {
  position: fixed;
  inset: 0;
  background-color: var(--color-bg-page);
  z-index: 150;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.mobile-nav--open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav__close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--text-lg);
  cursor: pointer;
}

.mobile-nav__link {
  font-family: var(--font-heading);
  font-size: var(--heading-md);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
  color: var(--color-primary);
}

/* ========================================
   Cookie Consent
   ======================================== */
.cookie-consent {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  max-width: 420px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) var(--space-5);
  z-index: 100;
}

.cookie-consent__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-4);
}

.cookie-consent__actions {
  display: flex;
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .cookie-consent {
    bottom: 0;
    right: 0;
    left: 0;
    max-width: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }
}

/* ========================================
   Back To Top
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  width: 44px;
  height: 44px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  cursor: pointer;
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.back-to-top--visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  box-shadow: var(--shadow-glow);
}

/* ========================================
   Article Body (prose typography)
   ======================================== */
.article-body {
  max-width: var(--container-narrow);
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

.article-body h1 { font-family: var(--font-heading); font-size: var(--heading-lg); font-weight: var(--weight-bold); color: var(--color-text-primary); margin: var(--space-10) 0 var(--space-4); line-height: var(--leading-tight); }
.article-body h2 { font-family: var(--font-heading); font-size: var(--heading-md); font-weight: var(--weight-bold); color: var(--color-text-primary); margin: var(--space-8) 0 var(--space-3); line-height: var(--leading-tight); }
.article-body h3 { font-family: var(--font-heading); font-size: var(--heading-sm); font-weight: var(--weight-semibold); color: var(--color-text-primary); margin: var(--space-6) 0 var(--space-2); line-height: var(--leading-snug); }

.article-body p { margin-bottom: var(--space-4); }
.article-body a { color: var(--color-primary); text-decoration: none; }
.article-body a:hover { text-decoration: underline; }
.article-body ul, .article-body ol { margin-bottom: var(--space-4); padding-left: var(--space-6); }
.article-body li { margin-bottom: var(--space-2); }
.article-body blockquote { border-left: 3px solid var(--color-border-subtle); padding-left: var(--space-4); margin: var(--space-6) 0; color: var(--color-text-muted); font-style: italic; }
.article-body code { font-family: var(--font-mono); font-size: var(--text-sm); background-color: var(--color-bg-elevated); padding: 2px var(--space-1); border-radius: var(--radius-sm); }
.article-body pre { background-color: var(--color-bg-elevated); padding: var(--space-4); border-radius: var(--radius-md); overflow-x: auto; margin-bottom: var(--space-4); }
.article-body pre code { background: none; padding: 0; }
.article-body hr { border: none; border-top: 1px solid var(--color-border-subtle); margin: var(--space-8) 0; }

/* ========================================
   Header Scroll States
   ======================================== */
.site-header--transparent {
  background-color: transparent;
  border-bottom-color: transparent;
}

.site-header--scrolled {
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border-subtle);
}