/* ============================================
   BrainSTEM — Marketing site styles
   Azure-inspired palette, CSS variables, grid/flex
   ============================================ */

:root {
  /* Brand */
  --color-primary: #0078d4;
  --color-primary-dark: #005a9e;
  --color-primary-soft: #eaf4ff;
  --color-text: #1f2937;
  --color-muted: #6b7280;
  --color-bg: #f8fafc;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --color-success-bg: #ecfdf5;
  --color-success-text: #065f46;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 120, 212, 0.12);

  /* Layout */
  --container: min(1120px, 92vw);
  --radius: 14px;
  --radius-sm: 10px;
  --header-height: 72px;
  --topbar-height: 40px;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.25s var(--ease);
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

.container {
  width: var(--container);
  margin-inline: auto;
}

/* ---------- Top bar ---------- */
.top-bar {
  background: var(--color-primary-soft);
  color: var(--color-muted);
  font-size: 0.8125rem;
  min-height: var(--topbar-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(0, 120, 212, 0.12);
}

.top-bar__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem 1rem;
  padding-block: 0.35rem;
}

.top-bar a {
  color: var(--color-text);
  font-weight: 500;
}

.top-bar__sep {
  margin-inline: 0.5rem;
  opacity: 0.45;
}

.top-bar__social {
  display: flex;
  gap: 0.5rem;
}

.social-link {
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--color-white);
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.social-link--wide {
  padding: 0 7px;
  font-size: 0.62rem;
  letter-spacing: 0.02em;
}

.social-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
}

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

.logo--image {
  line-height: 0;
}

.logo__img {
  height: 44px;
  width: auto;
  max-width: min(200px, 42vw);
  object-fit: contain;
  display: block;
  transition: opacity var(--transition);
}

.logo--image:hover .logo__img {
  opacity: 0.88;
}

.logo__accent {
  color: var(--color-primary);
}

.logo--footer .logo__img--footer {
  height: 40px;
  max-width: 180px;
  opacity: 0.98;
}

.logo--footer:hover .logo__img--footer {
  opacity: 1;
}

/* Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.25rem;
}

.nav__link {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.35rem 0;
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.nav__link--cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
  padding: 0.45rem 1rem !important;
  border-radius: 999px;
  margin-left: 0.25rem;
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.nav__link--cta.is-active {
  box-shadow: 0 0 0 2px var(--color-primary-soft);
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(3rem, 8vw, 5rem) 0 clamp(3rem, 6vw, 4rem);
  background: linear-gradient(165deg, var(--color-white) 0%, var(--color-primary-soft) 45%, var(--color-bg) 100%);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.hero__title {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  color: var(--color-text);
}

.hero__subtitle {
  margin: 0 0 1.75rem;
  font-size: 1.0625rem;
  color: var(--color-muted);
  max-width: 34rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Hero abstract art (CSS only) */
.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-art {
  position: relative;
  width: min(100%, 380px);
  aspect-ratio: 1;
}

.hero-art__orbit {
  position: absolute;
  border-radius: 50%;
  border: 2px dashed rgba(0, 120, 212, 0.25);
  animation: spin 28s linear infinite;
}

.hero-art__orbit--1 {
  inset: 8%;
}

.hero-art__orbit--2 {
  inset: 22%;
  animation-direction: reverse;
  animation-duration: 36s;
  border-style: solid;
  border-color: rgba(0, 120, 212, 0.12);
}

.hero-art__core {
  position: absolute;
  inset: 38%;
  border-radius: 24px;
  background: linear-gradient(145deg, var(--color-primary), #50a8ff);
  box-shadow: var(--shadow-lg);
  animation: pulse 4s var(--ease) infinite alternate;
}

.hero-art__node {
  position: absolute;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 120, 212, 0.15);
}

.hero-art__node--a {
  top: 12%;
  right: 18%;
  animation: float 5s var(--ease) infinite;
}

.hero-art__node--b {
  bottom: 20%;
  left: 10%;
  width: 36px;
  height: 36px;
  animation: float 6s var(--ease) infinite 0.5s;
}

.hero-art__node--c {
  top: 42%;
  left: 4%;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  animation: float 5.5s var(--ease) infinite 1s;
}

.hero-art__bar {
  position: absolute;
  height: 10px;
  border-radius: 999px;
  background: rgba(0, 120, 212, 0.25);
}

.hero-art__bar--1 {
  width: 45%;
  top: 28%;
  left: 22%;
}

.hero-art__bar--2 {
  width: 35%;
  bottom: 32%;
  right: 15%;
  background: rgba(0, 120, 212, 0.35);
}

.hero-art__bar--3 {
  width: 28%;
  bottom: 14%;
  left: 35%;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  from {
    transform: scale(1);
    filter: brightness(1);
  }
  to {
    transform: scale(1.03);
    filter: brightness(1.05);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition),
    transform var(--transition), box-shadow var(--transition);
  font-family: inherit;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(0, 120, 212, 0.35);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(0, 120, 212, 0.35);
}

.btn--outline {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: rgba(0, 120, 212, 0.35);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

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

.btn--secondary:hover {
  background: #dbeafe;
  transform: translateY(-1px);
}

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

/* ---------- Sections ---------- */
.section {
  padding: clamp(3.5rem, 7vw, 5rem) 0;
}

.section--alt {
  background: var(--color-white);
  border-block: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.75rem;
}

.section-title {
  font-size: clamp(1.65rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.section-lead {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.0625rem;
}

/* ---------- Stats ---------- */
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.stat-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 120, 212, 0.08);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.stat-card__value {
  display: block;
  font-size: clamp(1.65rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.stat-card__label {
  font-size: 0.875rem;
  color: var(--color-muted);
  font-weight: 500;
}

/* ---------- About / features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

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

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 120, 212, 0.25);
}

.feature-card__icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.feature-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.feature-card__text {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

/* ---------- Categories ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.category-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 120, 212, 0.3);
}

.category-card__emoji {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 0.75rem;
}

.category-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.category-card__text {
  margin: 0 0 1rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.text-link {
  font-weight: 600;
  font-size: 0.875rem;
}

/* ---------- Diploma promo banner ---------- */
.diploma-promo {
  padding: 0;
  background: linear-gradient(135deg, #0f172a 0%, #0c4a6e 50%, #0078d4 100%);
}

.diploma-promo__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 2rem;
  padding: clamp(2rem, 5vw, 2.75rem) 0;
  color: var(--color-white);
}

.diploma-promo__badge {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.65rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
}

.diploma-promo__content {
  flex: 1 1 280px;
  min-width: 0;
}

.diploma-promo__title {
  margin: 0 0 0.35rem;
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  letter-spacing: -0.02em;
}

.diploma-promo__text {
  margin: 0;
  font-size: 0.9375rem;
  opacity: 0.9;
  max-width: 52rem;
}

.diploma-promo .btn--primary {
  flex-shrink: 0;
  background: var(--color-white);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.diploma-promo .btn--primary:hover {
  background: var(--color-primary-soft);
  transform: translateY(-1px);
}

@media (max-width: 640px) {
  .diploma-promo__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .diploma-promo .btn--primary {
    width: 100%;
    text-align: center;
  }
}

/* ---------- Courses ---------- */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.course-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.course-card__title {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
}

.course-card__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.course-card__meta li {
  margin-bottom: 0.25rem;
}

.meta-label {
  display: inline-block;
  min-width: 5.5rem;
  font-weight: 600;
  color: var(--color-text);
}

.course-card__text {
  margin: 0;
  flex-grow: 1;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* ---------- Course calendar ---------- */
/* Interactive month calendar control */
.calendar-widget {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 1.5rem;
  align-items: stretch;
  margin-bottom: 2rem;
}

.calendar-widget__shell {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem 1.35rem;
  box-shadow: var(--shadow-md);
}

.calendar-widget__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.calendar-widget__nav {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
  flex: 1 1 auto;
  min-width: min(100%, 280px);
}

.calendar-widget__title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  min-width: 11rem;
  text-align: center;
}

.cal-nav-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-primary);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.cal-nav-btn:hover {
  background: var(--color-primary-soft);
  border-color: rgba(0, 120, 212, 0.35);
}

.cal-nav-btn:active {
  transform: scale(0.96);
}

.cal-nav-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.cal-today-btn {
  padding: 0.5rem 1rem !important;
  font-size: 0.8125rem !important;
  flex-shrink: 0;
}

@media (min-width: 901px) {
  .calendar-widget__toolbar {
    flex-wrap: nowrap;
  }

  .cal-today-btn {
    margin-left: auto;
  }
}

.cal-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 0.85rem;
}

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

.cal-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  font-style: normal;
}

.cal-dot--open {
  background: var(--color-primary);
}

.cal-dot--confirmed {
  background: #2563eb;
}

.cal-dot--done {
  background: #9ca3af;
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
}

.cal-weekdays span {
  text-align: center;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-cell {
  aspect-ratio: 1;
  min-height: 38px;
  max-height: 52px;
}

.cal-day {
  width: 100%;
  height: 100%;
  min-height: 38px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  cursor: pointer;
  padding: 4px 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 2px;
  font-family: inherit;
  transition: background var(--transition), border-color var(--transition), transform var(--transition),
    box-shadow var(--transition);
}

.cal-day:hover {
  background: var(--color-primary-soft);
  border-color: rgba(0, 120, 212, 0.25);
}

.cal-day:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  z-index: 1;
}

.cal-day--muted {
  opacity: 0.38;
  cursor: default;
  pointer-events: none;
}

.cal-day--muted:hover {
  background: var(--color-bg);
  border-color: transparent;
}

.cal-day--today:not(.cal-day--selected) {
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 1px rgba(0, 120, 212, 0.35);
}

.cal-day--selected {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.cal-day--selected:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.cal-day--selected .cal-day__num {
  color: inherit;
}

.cal-day__num {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.cal-day__dots {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  justify-content: center;
  max-width: 100%;
}

.cal-day__dots .cal-dot {
  width: 6px;
  height: 6px;
}

.cal-day--selected .cal-dot--open {
  background: var(--color-white);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.5);
}

.cal-day--selected .cal-dot--confirmed {
  background: #bfdbfe;
}

.cal-day--selected .cal-dot--done {
  background: #e5e7eb;
}

.cal-selection {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-md);
}

.cal-selection__hint {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.cal-selection__title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.cal-selection__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.cal-selection__item {
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--color-border);
}

.cal-selection__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.cal-selection__course {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.cal-selection__range {
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-bottom: 0.35rem;
}

.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
}

.badge--open {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.badge--confirmed {
  background: #dbeafe;
  color: #1e40af;
}

.badge--done {
  background: #f3f4f6;
  color: var(--color-muted);
}

/* ---------- Corporate ---------- */
.corporate__layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.corporate__lead {
  text-align: left;
}

.benefits-list {
  margin: 0 0 1.5rem;
  padding-left: 1.15rem;
  color: var(--color-muted);
}

.benefits-list li {
  margin-bottom: 0.5rem;
}

.benefits-list li::marker {
  color: var(--color-primary);
}

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

.corporate-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  transition: transform var(--transition);
}

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

.corporate-card--accent {
  background: linear-gradient(135deg, var(--color-primary-soft), var(--color-white));
  border-color: rgba(0, 120, 212, 0.2);
}

.corporate-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.corporate-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

/* ---------- Timeline / Learning approach ---------- */
.timeline {
  position: relative;
  padding: 1rem 0;
}

.timeline__track {
  display: none;
}

.timeline__steps {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x mandatory;
}

.timeline-step {
  flex: 1 1 180px;
  min-width: 160px;
  scroll-snap-align: start;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.35rem 1.15rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--transition), border-color var(--transition);
}

.timeline-step:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 120, 212, 0.35);
}

.timeline-step__dot {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-bottom: 0.75rem;
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}

.timeline-step__title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.timeline-step__text {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* ---------- Clients ---------- */
.clients__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.client-logo {
  background: var(--color-bg);
  border: 1px dashed rgba(0, 120, 212, 0.35);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--color-muted);
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.client-logo:hover {
  border-style: solid;
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

/* ---------- Contact ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2rem, 5vw, 3rem);
  align-items: start;
}

.contact__lead {
  text-align: left;
}

.contact-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.contact-list li {
  margin-bottom: 1.25rem;
  color: var(--color-muted);
}

.contact-list strong {
  color: var(--color-text);
}

.contact-form {
  background: var(--color-white);
  padding: 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.form-row {
  margin-bottom: 1.1rem;
}

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.35rem;
}

.req {
  color: var(--color-primary);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--color-bg);
}

/* Anti-spam honeypot: off-screen, must stay empty */
.contact-honeypot {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.contact-honeypot input {
  pointer-events: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.2);
  background: var(--color-white);
}

.contact-form input.error,
.contact-form select.error,
.contact-form textarea.error {
  border-color: #dc2626;
}

.field-error {
  display: block;
  min-height: 1.1rem;
  font-size: 0.75rem;
  color: #dc2626;
  margin-top: 0.25rem;
}

.form-row--captcha .captcha-hint {
  margin: 0 0 0.55rem;
  font-size: 0.85rem;
  color: var(--color-muted, #64748b);
}

.captcha-widget {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.captcha-image {
  display: block;
  border-radius: 6px;
  border: 1px solid var(--color-border, #e2e8f0);
  background: #fff;
}

.captcha-refresh {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  border: 1px solid var(--color-border, #e2e8f0);
  background: var(--color-white, #fff);
  color: var(--color-primary, #0078d4);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.captcha-refresh:hover {
  background: var(--color-bg-alt, #eaf4ff);
  border-color: var(--color-primary, #0078d4);
}

.captcha-widget input {
  width: 5.5rem;
  padding: 0.55rem 0.65rem;
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 8px;
}

.captcha-widget input:focus {
  outline: none;
  border-color: var(--color-primary, #0078d4);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.2);
}

.captcha-widget input.error {
  border-color: #dc2626;
}

.form-server-error {
  margin-bottom: 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: #fef2f2;
  border: 1px solid #fecaca;
  font-size: 0.875rem;
  color: #dc2626;
}

/* Hidden attr must win over display rules — no empty pink strip on load */
.form-server-error[hidden] {
  display: none !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  min-height: 0 !important;
}

.form-success {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-sm);
  background: var(--color-success-bg);
  color: var(--color-success-text);
  font-size: 0.9rem;
  border: 1px solid #a7f3d0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding-top: 3rem;
}

.site-footer a {
  color: #cbd5e1;
}

.site-footer a:hover {
  color: var(--color-white);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 2rem;
  padding-bottom: 2.5rem;
}

.footer__brand p {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 320px;
}

.logo--footer.logo--image {
  color: var(--color-white);
}

.footer__heading {
  color: var(--color-white);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 1rem;
}

.footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding: 1.25rem 0;
}

.footer__bottom-inner {
  text-align: center;
  font-size: 0.8125rem;
}

.footer__bottom-inner p {
  margin: 0;
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition),
    background var(--transition);
  z-index: 90;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
}

.back-to-top:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 3px;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Mobile navigation ---------- */
@media (max-width: 960px) {
  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__subtitle {
    margin-inline: auto;
  }

  .hero__actions {
    justify-content: center;
  }

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

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

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

  .calendar-widget {
    grid-template-columns: 1fr;
  }

  .calendar-widget__toolbar {
    flex-direction: column;
  }

  .calendar-widget__nav {
    width: 100%;
  }

  .cal-today-btn {
    width: 100%;
  }

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

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

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: calc(var(--topbar-height) + var(--header-height)) 0 0 0;
    background: var(--color-white);
    padding: 1.25rem;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--transition), visibility var(--transition);
    overflow-y: auto;
    border-top: 1px solid var(--color-border);
  }

  .nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__link {
    display: block;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link::after {
    display: none;
  }

  .nav__link--cta {
    margin-left: 0;
    margin-top: 1rem;
    text-align: center;
    border-bottom: none;
  }

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

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

  .top-bar__contact {
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
  }

  .top-bar__inner {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}