/* ==========================================================================
   Design tokens (Day 1)
   ========================================================================== */
:root {
  --brand-primary: #1a1a7e;
  --brand-accent: #e63946;
  --brand-accent-hover: #c1121f;
  --surface-default: #ffffff;
  --surface-muted: #eef1f6;
  --surface-elevated: #f8f9fc;
  --text-primary: #1a1a2e;
  --text-secondary: #5c6370;
  --text-inverse: #ffffff;
  --border-subtle: #e2e6ef;
  --shadow-soft: 0 4px 24px rgba(26, 26, 126, 0.08);
  --shadow-medium: 0 8px 32px rgba(26, 26, 126, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --section-py: clamp(4rem, 8vw, 7rem);
  --transition-base: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --font-heading: 'Plus Jakarta Sans', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --nav-height: 72px;
}

/* ==========================================================================
   Global foundation (Day 1)
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--surface-default);
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.2;
  margin-block: 0 0.5em;
}

h1 {
  font-size: clamp(2.25rem, 1.8rem + 2.5vw, 3.75rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.875rem, 1.5rem + 2vw, 2.75rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.375rem, 1.2rem + 1vw, 1.75rem);
  font-weight: 600;
}

h4 {
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  font-weight: 600;
}

p {
  color: var(--text-secondary);
}

a {
  color: var(--brand-primary);
  transition: color var(--transition-base);
}

a:hover {
  color: var(--brand-accent);
}

:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

section:not(.home) {
  padding-block: var(--section-py);
}

/* ==========================================================================
   Reduced motion (Day 1)
   ========================================================================== */
@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;
  }

  .logo-scroll {
    animation: none;
  }

  .navbar-collapse.show .nav-item {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ==========================================================================
   Navigation (Day 2)
   ========================================================================== */
.site-navbar {
  background: transparent;
  padding-block: 0.75rem;
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    backdrop-filter var(--transition-base);
  z-index: 1030;
}

.site-navbar.navbar-scrolled {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.site-navbar .navbar-brand .logo {
  margin-inline-start: 0;
  transition: filter var(--transition-base);
}

.site-navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.5);
  padding: 0.5rem 0.75rem;
  min-inline-size: 2.75rem;
  min-block-size: 2.75rem;
}

.site-navbar.navbar-scrolled .navbar-toggler {
  border-color: var(--border-subtle);
}

.site-navbar .navbar-toggler-icon {
  filter: invert(1);
}

.site-navbar.navbar-scrolled .navbar-toggler-icon {
  filter: none;
}

.site-navbar .navbar-nav {
  align-items: center;
  gap: 0.25rem;
}

.site-navbar .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-block-size: 2.75rem;
  color: black;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.5rem 0.875rem !important;
  transition: color var(--transition-base);
}

.site-navbar.navbar-scrolled .nav-link {
  color: var(--text-primary);
}

.site-navbar .nav-link:hover,
.site-navbar .nav-link:focus {
  color: var(--brand-accent);
}

.site-navbar .nav-link::after {
  content: '';
  position: absolute;
  inset-block-end: 0;
  inset-inline-start: 50%;
  inline-size: 0;
  block-size: 2px;
  background-color: var(--brand-accent);
  transition:
    inline-size var(--transition-base),
    inset-inline-start var(--transition-base);
}

.site-navbar .nav-link:hover::after,
.site-navbar .nav-link.active::after {
  inline-size: calc(100% - 1.75rem);
  inset-inline-start: 0.875rem;
}

.site-navbar .nav-link.active {
  color: var(--brand-accent);
  font-weight: 600;
}

.site-navbar.navbar-scrolled .nav-link.active {
  color: var(--brand-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: 2.75rem;
  margin-inline-start: 0.5rem;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  background-color: var(--brand-primary);
  color: var(--text-inverse) !important;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  transition:
    background-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.nav-cta:hover,
.nav-cta:focus {
  background-color: var(--brand-accent-hover);
  color: var(--text-inverse) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

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

@media (max-width: 991.98px) {
  .site-navbar .navbar-collapse {
    margin-block-start: 0.75rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-medium);
  }

  .site-navbar .nav-link {
    color: var(--text-primary);
  }

  .site-navbar .navbar-nav {
    gap: 0;
  }

  .navbar-collapse.show .nav-item {
    opacity: 0;
    animation: navItemFadeIn 0.35s ease forwards;
  }

  .navbar-collapse.show .nav-item:nth-child(1) { animation-delay: 0.05s; }
  .navbar-collapse.show .nav-item:nth-child(2) { animation-delay: 0.1s; }
  .navbar-collapse.show .nav-item:nth-child(3) { animation-delay: 0.15s; }
  .navbar-collapse.show .nav-item:nth-child(4) { animation-delay: 0.2s; }
  .navbar-collapse.show .nav-item:nth-child(5) { animation-delay: 0.25s; }
  .navbar-collapse.show .nav-item:nth-child(6) { animation-delay: 0.3s; }
  .navbar-collapse.show .nav-item:nth-child(7) { animation-delay: 0.35s; }
  .navbar-collapse.show .nav-item:nth-child(8) { animation-delay: 0.4s; }
  .navbar-collapse.show .nav-item:nth-child(9) { animation-delay: 0.45s; }

  .nav-cta {
    margin-inline-start: 0;
    margin-block-start: 0.5rem;
    inline-size: 100%;
  }
}

@keyframes navItemFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Shared section header (Day 4)
   ========================================================================== */
.section-header {
  text-align: center;
  margin-block-end: clamp(2rem, 4vw, 3rem);
}

.section-header--left {
  text-align: start;
}

.section-eyebrow {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-block-end: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 1.5rem + 2.5vw, 3.25rem);
  font-weight: 700;
  color: var(--brand-primary);
  margin-block-end: 1rem;
}

.section-subtitle {
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  color: var(--text-secondary);
  max-inline-size: 42rem;
  margin-inline: auto;
}

.section-header--left .section-subtitle {
  margin-inline: 0;
}

/* ==========================================================================
   Hero (Day 3)
   ========================================================================== */
.logo {
  margin-inline-start: 5rem;
}

.home {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('../image/image.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  inline-size: 100%;
  min-block-size: max(700px, 100svh);
  color: var(--text-inverse);
  padding-block: calc(var(--nav-height) + 3rem) 4rem;
  padding-inline: 1.5rem;
  text-align: center;
  overflow: hidden;
}

.home::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 26, 46, 0.82) 0%,
    rgba(26, 26, 126, 0.55) 50%,
    rgba(26, 26, 46, 0.75) 100%
  );
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-inline-size: 52rem;
  margin-inline: auto;
}

.hero-inner .display-3 {
  font-size: clamp(2.5rem, 2rem + 3vw, 4.5rem);
  color: var(--brand-accent);
  font-weight: 800;
  font-family: var(--font-heading);
  margin-block-end: 0.5rem;
}

.hero-inner .display-4 {
  font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  color: var(--text-inverse);
  font-weight: 600;
  font-family: var(--font-heading);
  margin-block-end: 1.25rem;
  line-height: 1.35;
}

.hero-rotate-word {
  color: var(--brand-accent);
  display: inline-block;
  min-inline-size: 9ch;
  transition: opacity 0.3s ease;
}

.hero-rotate-word.is-fading {
  opacity: 0;
}

.hero-inner .lead {
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.2rem);
  max-inline-size: 36rem;
  margin-inline: auto;
  margin-block-end: 2rem;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: 2.75rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.btn-hero-primary {
  background-color: var(--brand-primary);
  color: var(--text-inverse);
  border: 2px solid var(--brand-primary);
}

.btn-hero-primary:hover,
.btn-hero-primary:focus {
  background-color: var(--brand-accent-hover);
  border-color: var(--brand-accent-hover);
  color: var(--text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-hero-secondary {
  background-color: transparent;
  color: var(--text-inverse);
  border: 2px solid rgba(255, 255, 255, 0.65);
}

.btn-hero-secondary:hover,
.btn-hero-secondary:focus {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--text-inverse);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.hero-animate {
  opacity: 0;
  transform: translateY(24px);
  animation: heroFadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-inner .display-3.hero-animate { animation-delay: 0.1s; }
.hero-inner .display-4.hero-animate { animation-delay: 0.25s; }
.hero-inner .lead.hero-animate { animation-delay: 0.4s; }
.hero-inner .hero-cta-group.hero-animate { animation-delay: 0.55s; }

@keyframes heroFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .home {
    background-position: 65% center;
    min-block-size: 600px;
    padding-block: calc(var(--nav-height) + 2rem) 3rem;
  }

  .hero-cta-group {
    flex-direction: column;
    inline-size: 100%;
  }

  .btn-hero {
    inline-size: 100%;
    max-inline-size: 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-animate {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

.section-divider {
  border: none;
  border-block-start: 2px solid var(--border-subtle);
  padding-inline: 10%;
  margin-inline: 9%;
  margin-block-start: 30px;
}

.display-3 {
  color: var(--brand-accent);
  font-weight: 800;
  font-family: var(--font-heading);
}

.display-4 {
  color: var(--text-inverse);
  font-weight: 600;
  font-family: var(--font-heading);
}

.button {
  color: var(--text-inverse);
  border-radius: var(--radius-sm);
  margin: 7px;
  padding-inline-start: 6px;
  padding-inline-end: 6px;
}

/* ==========================================================================
   About (Day 4)
   ========================================================================== */
.about {
  background-color: var(--surface-muted);
}

.about-main {
  margin-block-end: clamp(2rem, 4vw, 3.5rem);
}

.about-brand-lines {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-block-end: 1.25rem;
}

.about-brand-accent {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  font-weight: 600;
  color: var(--brand-accent);
}

.about-brand-primary {
  font-family: var(--font-heading);
  font-size: clamp(1.125rem, 0.95rem + 0.75vw, 1.5rem);
  font-weight: 500;
  color: var(--brand-primary);
}

.about-lead {
  text-align: justify;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-block-end: 0;
}

.about-stats {
  block-size: 100%;
  align-items: stretch;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--surface-default);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1rem;
  box-shadow: var(--shadow-soft);
  block-size: 100%;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

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

.stat-card__value {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 1.5rem + 1vw, 2.25rem);
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.1;
}

.stat-card__label {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-block-start: 0.5rem;
}

.about-cards {
  margin-block-end: clamp(2rem, 4vw, 3rem);
}

.about-card {
  background: var(--surface-default);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
  block-size: 100%;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

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

.about-card__icon {
  display: block;
  font-size: 1.75rem;
  color: var(--brand-accent);
  margin-block-end: 1rem;
}

.about-card p {
  text-align: start;
  margin-block-end: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
}

.brand-logo-slider-area {
  padding-block-end: 0.5rem;
}

.logo-container {
  background-color: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  margin-block-start: 0;
  margin-inline: clamp(1rem, 5vw, 7%);
  padding: 1.25rem 0;
  box-shadow: var(--shadow-soft);
}

.logo-scroll-container {
  overflow: hidden;
  white-space: nowrap;
  inline-size: 100%;
}

.logo-scroll-container:hover .logo-scroll,
.logo-scroll-container:focus-within .logo-scroll {
  animation-play-state: paused;
}

.logo-scroll {
  display: inline-flex;
  align-items: center;
  gap: 2rem;
  animation: scroll 25s linear infinite;
}

.logo-marquee-img {
  display: inline-block;
  max-inline-size: 130px;
  block-size: auto;
  vertical-align: middle;
  opacity: 0.75;
  filter: grayscale(30%);
  transition:
    opacity var(--transition-base),
    filter var(--transition-base),
    transform var(--transition-base);
}

.logo-marquee-img:hover {
  opacity: 1;
  filter: grayscale(0%);
  transform: scale(1.05);
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (max-width: 991.98px) {
  .about-stats {
    margin-block-start: 0.5rem;
  }
}

@media (max-width: 575.98px) {
  .about-stats .col-sm-4 {
    flex: 0 0 100%;
    max-inline-size: 100%;
  }
}

/* ==========================================================================
   Services (Day 5)
   ========================================================================== */
.services-section {
  background-color: var(--surface-default);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1.5rem, 3vw, 2rem);
  justify-items: center;
}

.service-card {
  inline-size: 100%;
  max-inline-size: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.service-card--design {
  background-color: #5ecbff;
}

.service-card--management {
  background-color: #dda372;
}

.service-card--security {
  background-color: #e0cbb5;
}

.service-card__media {
  overflow: hidden;
}

.service-card__media img {
  inline-size: 100%;
  block-size: 260px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.service-card:hover .service-card__media img {
  transform: scale(1.05);
}

.service-content {
  padding: 1.25rem 1.5rem 1.5rem;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-content h3 {
  margin-block-end: 0.625rem;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.service-content p {
  font-size: 0.95rem;
  color: var(--text-primary);
  opacity: 0.85;
  margin-block-end: 1.25rem;
  flex: 1;
}

.service-link {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-base);
}

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

.service-link__arrow {
  display: inline-block;
  transition: transform var(--transition-base);
}

.service-link:hover .service-link__arrow {
  transform: translateX(6px);
}

@media (max-width: 575.98px) {
  .service-card__media img {
    block-size: 220px;
  }
}

.large-image-box {
  border-radius: var(--radius-xl);
  margin: 10px;
  margin-inline-start: 0;
  inline-size: 400px;
  box-shadow: var(--shadow-medium);
  block-size: 550px;
  padding-inline: auto;
}

.heading {
  font-size: 24px;
}

.content {
  padding-block-start: 20px;
}

.button-text {
  font-weight: 600;
  font-size: 16px;
}

/* ==========================================================================
   Features (Day 6)
   ========================================================================== */
.features-wrapper {
  background-color: var(--surface-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.feature-card {
  background: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.5rem;
  text-align: center;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-medium);
  border-color: rgba(26, 26, 126, 0.2);
}

.feature-card__media {
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-block-end: 1.25rem;
}

.feature-card__media img {
  inline-size: 100%;
  block-size: 180px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.feature-card:hover .feature-card__media img {
  transform: scale(1.03);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-block-end: 0.625rem;
  font-weight: 600;
  color: var(--brand-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-block-end: 0;
}

/* ==========================================================================
   Portfolio (Day 7)
   ========================================================================== */
.portfolio {
  background-color: var(--surface-default);
}

.portfolio-item {
  margin-block-end: clamp(2.5rem, 5vw, 4rem);
}

.portfolio-item__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.portfolio-item__img {
  display: block;
  inline-size: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base);
}

.portfolio-item__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 26, 126, 0.72);
  color: var(--text-inverse);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: var(--radius-lg);
}

.portfolio-item__media:hover .portfolio-item__overlay,
.portfolio-item__media:focus-within .portfolio-item__overlay {
  opacity: 1;
}

.portfolio-item__media:hover .portfolio-item__img {
  transform: scale(1.04);
}

.portfolio-item__tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-block-end: 0.75rem;
}

.portfolio-item__title {
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  font-weight: 700;
  color: var(--brand-primary);
  margin-block-end: 0.875rem;
  text-transform: none;
}

.portfolio-item__desc {
  color: var(--text-secondary);
  font-size: 0.975rem;
  line-height: 1.65;
  margin-block-end: 0;
}

.portfolio-capabilities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
  margin-block-start: clamp(2rem, 4vw, 3rem);
}

.portfolio-capability-card {
  background: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.5rem;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.portfolio-capability-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: rgba(26, 26, 126, 0.18);
}

.portfolio-capability-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--brand-primary);
  margin-block-end: 0.625rem;
}

.portfolio-capability-card__desc {
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.6;
  margin-block-end: 0;
}

@media (max-width: 767px) {
  .portfolio-item__content {
    margin-block-start: 1rem;
  }

  .portfolio-item--reverse .portfolio-item__content {
    margin-block-start: 0;
    margin-block-end: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-item__img,
  .portfolio-item__overlay,
  .portfolio-capability-card {
    transition: none;
  }

  .portfolio-item__media:hover .portfolio-item__img {
    transform: none;
  }
}

/* ==========================================================================
   Team (Day 8)
   ========================================================================== */
.team {
  background-color: var(--surface-muted);
}

.team-grid > [class*="col-"] {
  margin-block-end: 1.5rem;
}

.team-card {
  background: var(--surface-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.5rem 1.25rem;
  text-align: center;
  block-size: 100%;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

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

.team-card__avatar {
  inline-size: 140px;
  block-size: 140px;
  margin-inline: auto;
  margin-block-end: 1.125rem;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  overflow: hidden;
}

.team-card__avatar img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  border-radius: 50%;
  filter: grayscale(100%);
  transition:
    filter var(--transition-base),
    transform var(--transition-base);
}

.team-card:hover .team-card__avatar img {
  filter: grayscale(0%);
  transform: scale(1.02);
}

.team-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--brand-primary);
  margin-block-end: 0.375rem;
}

.team-card__role {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-block-end: 0;
}

@media (prefers-reduced-motion: reduce) {
  .team-card,
  .team-card__avatar img {
    transition: none;
  }

  .team-card:hover {
    transform: none;
  }

  .team-card__avatar img {
    filter: none;
  }
}

/* ==========================================================================
   Pricing (Day 8)
   ========================================================================== */
.pricing {
  background-color: var(--surface-default);
}

.pricing-grid > [class*="col-"] {
  margin-block-end: 1.5rem;
  display: flex;
}

.pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  inline-size: 100%;
  background: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 2rem 1.5rem;
  text-align: center;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.pricing-card:hover {
  box-shadow: var(--shadow-medium);
  border-color: rgba(26, 26, 126, 0.15);
}

.pricing-card--featured {
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-medium);
  transform: scale(1.04);
  z-index: 1;
}

.pricing-card--featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-card__badge {
  position: absolute;
  inset-block-start: -0.75rem;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  background: var(--brand-accent);
  color: var(--text-inverse);
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.375rem 1rem;
  border-radius: 999px;
  white-space: nowrap;
}

.pricing-card__icon {
  margin-block-end: 1rem;
}

.pricing-card__price {
  font-size: clamp(1.75rem, 1.5rem + 1vw, 2.25rem);
  font-weight: 700;
  color: var(--brand-primary);
  margin-block-end: 0.25rem;
}

.pricing-card__period {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.pricing-card__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-block-end: 1.25rem;
}

.pricing-card__btn {
  inline-size: 100%;
  max-inline-size: 200px;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
  margin-block-end: 1.5rem;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base);
}

.pricing-card__btn--primary {
  background-color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
  color: var(--text-inverse);
}

.pricing-card__btn--primary:hover,
.pricing-card__btn--primary:focus {
  background-color: var(--brand-accent);
  border-color: var(--brand-accent);
  color: var(--text-inverse);
}

.pricing-card__btn--outline {
  background-color: transparent;
  border: 2px solid var(--brand-primary);
  color: var(--brand-primary);
}

.pricing-card__btn--outline:hover,
.pricing-card__btn--outline:focus {
  background-color: var(--brand-primary);
  color: var(--text-inverse);
}

.pricing-card__features {
  list-style: none;
  padding: 0;
  margin: 0;
  inline-size: 100%;
  text-align: start;
}

.pricing-card__features li {
  position: relative;
  padding-inline-start: 1.5rem;
  padding-block: 0.375rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  opacity: 0.85;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

.pricing-card__features li::before {
  content: '✔';
  position: absolute;
  inset-inline-start: 0;
  color: var(--brand-accent);
  font-size: 0.75rem;
}

.pricing-card:hover .pricing-card__features li {
  opacity: 1;
}

.pricing-card:hover .pricing-card__features li:nth-child(1) { transition-delay: 0ms; }
.pricing-card:hover .pricing-card__features li:nth-child(2) { transition-delay: 60ms; }
.pricing-card:hover .pricing-card__features li:nth-child(3) { transition-delay: 120ms; }
.pricing-card:hover .pricing-card__features li:nth-child(4) { transition-delay: 180ms; }
.pricing-card:hover .pricing-card__features li:nth-child(5) { transition-delay: 240ms; }
.pricing-card:hover .pricing-card__features li:nth-child(6) { transition-delay: 300ms; }
.pricing-card:hover .pricing-card__features li:nth-child(7) { transition-delay: 360ms; }
.pricing-card:hover .pricing-card__features li:nth-child(8) { transition-delay: 420ms; }

@media (max-width: 991px) {
  .pricing-card--featured {
    transform: none;
  }

  .pricing-card--featured:hover {
    transform: translateY(-4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pricing-card,
  .pricing-card__features li,
  .pricing-card__btn {
    transition: none;
  }

  .pricing-card--featured {
    transform: none;
  }

  .pricing-card--featured:hover {
    transform: none;
  }
}

.features {
  padding: 60px 0;
}

.feature-icon {
  font-size: 3rem;
  color: var(--brand-primary);
}

/* ==========================================================================
   Contact (Day 9)
   ========================================================================== */
.contact-section {
  background-color: var(--surface-muted);
}

.contact-info__heading,
.contact-social__heading,
.contact-admin__heading,
.contact-form__heading {
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  font-weight: 700;
  color: var(--brand-primary);
  margin-block-end: 1rem;
}

.contact-info__list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}

.contact-info__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding-block: 0.875rem;
}

.contact-info__item + .contact-info__item {
  border-top: 1px solid var(--border-subtle);
}

.contact-info__icon {
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--brand-primary);
  margin-block-start: 0.125rem;
}

.contact-info__label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-block-end: 0.25rem;
}

.contact-info__value {
  font-style: normal;
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.5;
}

a.contact-info__value:hover {
  color: var(--brand-accent);
}

.contact-social {
  margin-block-end: 2rem;
}

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

.contact-social__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 2.75rem;
  block-size: 2.75rem;
  border-radius: var(--radius-md);
  background-color: var(--surface-default);
  color: var(--brand-primary);
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--transition-base),
    color var(--transition-base),
    background-color var(--transition-base);
}

.contact-social__link:hover,
.contact-social__link:focus-visible {
  transform: scale(1.1);
  color: var(--text-inverse);
}

.contact-social__link--facebook:hover,
.contact-social__link--facebook:focus-visible {
  background-color: #1877f2;
}

.contact-social__link--twitter:hover,
.contact-social__link--twitter:focus-visible {
  background-color: #1da1f2;
}

.contact-social__link--instagram:hover,
.contact-social__link--instagram:focus-visible {
  background-color: #e4405f;
}

.contact-social__link--linkedin:hover,
.contact-social__link--linkedin:focus-visible {
  background-color: #0a66c2;
}

.contact-admin__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: 2.75rem;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-inverse);
  background-color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
  border-radius: var(--radius-md);
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base);
}

.contact-admin__btn:hover,
.contact-admin__btn:focus-visible {
  background-color: var(--brand-accent);
  border-color: var(--brand-accent);
  color: var(--text-inverse);
}

.contact-form-card {
  background-color: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-soft);
}

.contact-form__intro {
  margin-block-end: 1.5rem;
}

.contact-form__input {
  min-block-size: 2.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--surface-default);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.contact-form__input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(26, 26, 126, 0.15);
}

textarea.contact-form__input {
  min-block-size: 8rem;
  resize: vertical;
}

.contact-form__submit {
  inline-size: 100%;
  min-block-size: 2.75rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-inverse);
  background-color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
  border-radius: var(--radius-md);
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base);
}

.contact-form__submit:hover,
.contact-form__submit:focus-visible {
  background-color: var(--brand-accent);
  border-color: var(--brand-accent);
  color: var(--text-inverse);
}

.contact-form-card .form-label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

@media (max-width: 767px) {
  .contact-form-card {
    margin-block-start: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .contact-social__link,
  .contact-admin__btn,
  .contact-form__submit {
    transition: none;
  }

  .contact-social__link:hover,
  .contact-social__link:focus-visible {
    transform: none;
  }
}

/* ==========================================================================
   Registration page
   ========================================================================== */
.registration-hero {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #2d2d9e 100%);
  color: var(--text-inverse);
  padding-block: calc(var(--nav-height) + 2.5rem) 3rem;
  text-align: center;
}

.registration-hero .section-eyebrow {
  color: rgba(255, 255, 255, 0.75);
}

.registration-hero__title {
  font-size: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  font-weight: 800;
  color: var(--text-inverse);
  margin-block-end: 0.75rem;
}

.registration-hero__subtitle {
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  color: rgba(255, 255, 255, 0.85);
  max-inline-size: 36rem;
  margin-inline: auto;
  margin-block-end: 0;
}

.registration-section {
  background-color: var(--surface-muted);
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.registration-form-card {
  margin-block-end: 0;
}

.registration-form__fieldset {
  border: none;
  padding: 0;
  margin: 0 0 2rem;
}

.registration-form__fieldset--last {
  margin-block-end: 1.5rem;
}

.registration-form__legend {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--brand-primary);
  padding-block-end: 0.75rem;
  margin-block-end: 1rem;
  border-block-end: 2px solid var(--border-subtle);
  inline-size: 100%;
}

.registration-form__radio-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-block-size: 2.75rem;
  padding-block-start: 0.25rem;
}

.registration-form__radio-group .form-check-label {
  font-weight: 500;
  color: var(--text-primary);
}

.registration-sidebar {
  height: auto;
  displau: flex;
  flex direction: column;
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
}

.registration-sidebar__media {
  width: 100%;
  height: auto; 
  margin-bottom: 20px;
  overflow: hidden;
  border-radius: 1rem;
}

.registration-sidebar__image {
  display: block;
  width: 100%;      
  height: auto;      
  object-fit: contain;
  border-radius: 1rem;
}

.registration-sidebar__video {
  display: block;
  width: 100%;      
  height: auto;      
  object-fit: contain;
  border-radius: 1rem;
  margin-top: 20px;
}

.registration-sidebar__media:hover .registration-sidebar__video,
.registration-sidebar__media:focus-within .registration-sidebar__video {
  opacity: 1;
}

.registration-sidebar__info {
  background-color: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
}

.registration-sidebar__heading {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-block-end: 0.75rem;
}

.registration-sidebar__text {
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-block-end: 1rem;
}

.registration-sidebar__list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}

.registration-sidebar__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding-block: 0.375rem;
}

.registration-sidebar__list li i {
  color: var(--brand-primary);
  flex-shrink: 0;
  margin-block-start: 0.125rem;
}

.registration-sidebar__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 100%;
  min-block-size: 2.5rem;
  padding: 0.5rem 1.25rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--brand-primary);
  background-color: transparent;
  border: 2px solid var(--brand-primary);
  border-radius: var(--radius-md);
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

.registration-sidebar__link:hover,
.registration-sidebar__link:focus-visible {
  background-color: var(--brand-primary);
  color: var(--text-inverse);
}

@media (max-width: 991px) {
  .registration-sidebar {
    position: static;
  }

  .registration-sidebar__media {
    max-block-size: 220px;
    aspect-ratio: 16 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .registration-sidebar__video {
    display: none;
  }
}

/* ==========================================================================
   Footer (Day 9)
   ========================================================================== */
.site-footer {
  position: relative;
  background-color: var(--text-primary);
  color: var(--text-inverse);
  padding-block: 0 clamp(2rem, 4vw, 3rem);
}

.site-footer__accent {
  block-size: 4px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
}

.site-footer__grid {
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
}

.site-footer__logo {
  display: inline-block;
  margin-block-end: 1rem;
  filter: brightness(0) invert(1);
  transition: opacity var(--transition-base);
}

.site-footer__logo:hover,
.site-footer__logo:focus-visible {
  opacity: 0.85;
}

.site-footer__tagline {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  max-inline-size: 22rem;
  margin: 0;
}

.site-footer__heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-inverse);
  margin-block-end: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.site-footer__links,
.site-footer__contact {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__links li + li,
.site-footer__contact li + li {
  margin-block-start: 0.625rem;
}

.site-footer__links a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.9375rem;
  transition:
    color var(--transition-base),
    text-decoration-color var(--transition-base);
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: var(--text-inverse);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer__contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.75);
}

.site-footer__contact i {
  flex-shrink: 0;
  color: var(--brand-accent);
  margin-block-start: 0.125rem;
}

.site-footer__contact a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--transition-base);
}

.site-footer__contact a:hover,
.site-footer__contact a:focus-visible {
  color: var(--text-inverse);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-block-start: 1.5rem;
  text-align: center;
}

.site-footer__bottom p {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 767px) {
  .site-footer__grid > [class*='col-'] + [class*='col-'] {
    margin-block-start: 0.5rem;
  }

  .site-footer__bottom {
    text-align: start;
  }
}