/* ============================================================
   Dev Solution Labs — Frontend Theme CSS
   Design system matching the Next.js frontend project
   ============================================================ */

/* === CSS Custom Properties === */
:root {
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;

  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;

  --purple-500: #a855f7;
  --cyan-400: #22d3ee;
  --amber-400: #fbbf24;
  --amber-900: #78350f;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --red-500: #ef4444;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-max: 1200px;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);
  --shadow-blue: 0 10px 25px -5px rgba(37,99,235,.25);
  --transition: all 0.3s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-sans);
  color: var(--slate-700);
  background: #fff;
  line-height: 1.6;
  font-size: 16px;
}

::selection { background: rgba(59,130,246,.3); }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

/* === Container === */
.fe-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* === Typography === */
.fe-section-label {
  color: var(--blue-600);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.75rem;
}
.fe-section-title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.15;
  margin-bottom: 1rem;
}
.fe-section-subtitle {
  font-size: 1.125rem;
  color: var(--slate-500);
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}
.fe-section-header {
  text-align: center;
  margin-bottom: 4rem;
}

/* === Header / Navbar === */
.fe-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  border-bottom: 1px solid rgba(226,232,240,.8);
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}
.fe-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}
.fe-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.fe-logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37,99,235,.2);
  color: #fff;
  font-weight: 800;
  font-size: 0.875rem;
}
.fe-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
}
.fe-logo-text span { color: var(--blue-600); }

.fe-nav { display: flex; align-items: center; gap: 2rem; }
.fe-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-600);
  transition: var(--transition);
}
.fe-nav a:hover, .fe-nav a.active { color: var(--blue-600); }

.fe-nav-actions { display: flex; align-items: center; gap: 0.75rem; }

/* Mobile hamburger — animated bars */
.fe-mobile-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: none;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0;
  position: relative;
  z-index: 100;
  -webkit-tap-highlight-color: transparent;
}
.fe-mobile-toggle .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--slate-800);
  border-radius: 2px;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1),
              opacity 0.25s ease,
              background 0.3s ease;
  position: absolute;
  left: 50%;
  transform-origin: center;
}
.fe-mobile-toggle .bar-1 {
  transform: translate(-50%, -7px);
}
.fe-mobile-toggle .bar-2 {
  transform: translate(-50%, 0);
}
.fe-mobile-toggle .bar-3 {
  transform: translate(-50%, 7px);
}

/* Cross state when menu is open */
.fe-mobile-toggle.active .bar-1 {
  transform: translate(-50%, 0) rotate(45deg);
}
.fe-mobile-toggle.active .bar-2 {
  opacity: 0;
  transform: translate(-50%, 0) scaleX(0);
}
.fe-mobile-toggle.active .bar-3 {
  transform: translate(-50%, 0) rotate(-45deg);
}

/* Mobile menu — slide down */
.fe-mobile-menu {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  border-top: 1px solid transparent;
  background: #fff;
  transition: max-height 0.4s cubic-bezier(.4,0,.2,1),
              opacity 0.3s ease,
              border-color 0.3s ease;
}
.fe-mobile-menu.open {
  max-height: 500px;
  opacity: 1;
  border-top-color: var(--slate-200);
}
.fe-mobile-nav a {
  display: block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--slate-700);
  transition: var(--transition);
  border-bottom: 1px solid var(--slate-100);
}
.fe-mobile-nav a:last-child {
  border-bottom: none;
}
.fe-mobile-nav a:hover {
  color: var(--blue-600);
  background: var(--blue-50);
  padding-left: 2rem;
}
.fe-mobile-cta {
  display: block;
  margin: 0.75rem 1.5rem 1rem;
  text-align: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  font-size: 0.9375rem;
}

@media (max-width: 768px) {
  .fe-nav { display: none; }
  .fe-btn-desktop-only { display: none !important; }
  .fe-mobile-toggle { display: flex; }
}

/* === Buttons === */
.fe-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-xl);
  padding: 0.75rem 1.5rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.5;
}
.fe-btn-primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: #fff;
  box-shadow: var(--shadow-blue);
}
.fe-btn-primary:hover {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-400));
  box-shadow: 0 15px 30px -5px rgba(37,99,235,.3);
  transform: translateY(-2px);
}
.fe-btn-outline {
  background: transparent;
  color: var(--slate-300);
  border: 1px solid var(--slate-600);
}
.fe-btn-outline:hover {
  border-color: var(--slate-400);
  color: #fff;
  transform: translateY(-2px);
}
.fe-btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.fe-btn-sm { padding: 0.5rem 1rem; font-size: 0.8125rem; }
.fe-btn-white {
  background: #fff;
  color: var(--blue-600);
  box-shadow: var(--shadow-lg);
}
.fe-btn-white:hover { background: var(--blue-50); transform: translateY(-2px); }
.fe-btn-dark {
  background: var(--slate-900);
  color: #fff;
}
.fe-btn-dark:hover { background: var(--slate-800); transform: translateY(-2px); }

/* === Hero Section === */
.fe-hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--slate-950), var(--slate-900), #172554);
  color: #fff;
}
.fe-hero-grid {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHZpZXdCb3g9IjAgMCA0MCA0MCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48ZyBmaWxsPSJub25lIiBmaWxsLXJ1bGU9ImV2ZW5vZGQiPjxwYXRoIGQ9Ik0wIDBoNDB2NDBIMHoiLz48cGF0aCBkPSJNMCAwaDQwdjQwSDB6IiBzdHJva2U9InJnYmEoMjU1LDI1NSwyNTUsMC4wMykiIHN0cm9rZS13aWR0aD0iMSIvPjwvZz48L3N2Zz4=");
  opacity: 0.6;
}
.fe-hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: pulse-orb 4s ease-in-out infinite;
}
.fe-hero-orb-1 { top: 5rem; left: 2rem; width: 18rem; height: 18rem; background: rgba(59,130,246,.2); }
.fe-hero-orb-2 { bottom: 5rem; right: 2rem; width: 24rem; height: 24rem; background: rgba(168,85,247,.15); animation-delay: 1s; }
@keyframes pulse-orb {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.1); opacity: 1; }
}
.fe-hero-content {
  position: relative; z-index: 10;
  text-align: center;
  max-width: 56rem;
  margin: 0 auto;
  padding: 5rem 0;
}
.fe-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  background: rgba(59,130,246,.1);
  border: 1px solid rgba(59,130,246,.2);
  color: var(--blue-400);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
}
.fe-hero-badge-dot {
  width: 0.5rem; height: 0.5rem;
  border-radius: 50%;
  background: var(--blue-400);
  animation: pulse-orb 2s ease-in-out infinite;
}
.fe-hero h1 {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.fe-hero h1 .gradient-text {
  background: linear-gradient(90deg, var(--blue-400), var(--cyan-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.fe-hero-desc {
  font-size: 1.125rem;
  color: var(--slate-400);
  max-width: 38rem;
  margin: 0 auto 3rem;
  line-height: 1.75;
}
.fe-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.fe-hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 48rem;
  margin: 5rem auto 0;
}
.fe-hero-stat { text-align: center; }
.fe-hero-stat-value {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: #fff;
}
.fe-hero-stat-label {
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-top: 0.25rem;
}
@media (max-width: 640px) {
  .fe-hero-stats { grid-template-columns: repeat(2, 1fr); }
}

/* === Page Banner (inner pages) === */
.fe-page-banner {
  padding: 6rem 0 4rem;
  background: linear-gradient(135deg, var(--slate-950), var(--slate-900), #172554);
  text-align: center;
  color: #fff;
}
.fe-page-banner .fe-section-label { color: var(--blue-400); }
.fe-page-banner h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
}
.fe-page-banner p {
  font-size: 1.125rem;
  color: var(--slate-400);
  max-width: 38rem;
  margin: 0 auto;
}
.fe-breadcrumbs {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.5rem;
  font-size: 0.8125rem;
  color: var(--slate-500);
  padding: 0.5rem 1.25rem;
  background: rgba(255,255,255,.05);
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,.08);
}
.fe-breadcrumbs a { color: var(--slate-400); transition: var(--transition); white-space: nowrap; }
.fe-breadcrumbs a:hover { color: var(--blue-400); }
.fe-breadcrumbs .separator { color: var(--slate-600); }
.fe-breadcrumbs .current { color: var(--blue-400); max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; vertical-align: middle; }
@media (max-width: 640px) {
  .fe-breadcrumbs .current { max-width: 140px; }
}

/* === Sections === */
.fe-section { padding: 6rem 0; }
.fe-section-alt { background: var(--slate-50); }
.fe-section-dark {
  background: linear-gradient(135deg, var(--slate-950), #172554, var(--slate-950));
  color: #fff;
  position: relative;
  overflow: hidden;
}
.fe-section-dark .fe-section-label { color: var(--blue-400); }
.fe-section-dark .fe-section-title { color: #fff; }
.fe-section-dark .fe-section-subtitle { color: var(--slate-400); }

/* === Cards === */
.fe-card {
  position: relative;
  padding: 2rem;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--slate-200);
  background: rgba(248,250,252,.5);
  transition: var(--transition);
}
.fe-card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(59,130,246,.05);
  transform: translateY(-4px);
}
.fe-card-icon {
  width: 3.5rem; height: 3.5rem;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 12px rgba(37,99,235,.2);
  color: #fff;
  font-size: 1.5rem;
}
.fe-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.75rem;
  transition: var(--transition);
}
.fe-card:hover h3 { color: var(--blue-600); }
.fe-card p {
  color: var(--slate-600);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.fe-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue-600);
  transition: var(--transition);
}
.fe-card-link:hover { gap: 0.625rem; }
.fe-card-link svg, .fe-card-link i { font-size: 1rem; }

/* === Grid === */
.fe-grid { display: grid; gap: 2rem; }
.fe-grid-2 { grid-template-columns: repeat(2, 1fr); }
.fe-grid-3 { grid-template-columns: repeat(3, 1fr); }
.fe-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) {
  .fe-grid-3, .fe-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .fe-grid-2, .fe-grid-3, .fe-grid-4 { grid-template-columns: 1fr; }
}

/* === Badges === */
.fe-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}
.fe-badge-blue { background: var(--blue-100); color: var(--blue-700); }
.fe-badge-green { background: rgba(34,197,94,.1); color: var(--green-600); }
.fe-badge-amber { background: var(--amber-400); color: var(--amber-900); }
.fe-badge-slate { background: var(--slate-100); color: var(--slate-600); }

/* === Pricing Cards === */
.fe-pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 72rem;
  margin: 0 auto;
  align-items: start;
}
@media (max-width: 1024px) { .fe-pricing-grid { grid-template-columns: 1fr; max-width: 24rem; margin: 0 auto; } }
.fe-pricing-card {
  position: relative;
  border-radius: var(--radius-2xl);
  padding: 2rem;
  border: 1px solid var(--slate-200);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.fe-pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.fe-pricing-card-popular {
  background: linear-gradient(to bottom, var(--blue-600), var(--blue-700));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 20px 40px -10px rgba(37,99,235,.3);
  outline: 2px solid rgba(96,165,250,.5);
  transform: scale(1.05);
  z-index: 10;
}
.fe-pricing-card-popular:hover { transform: scale(1.05) translateY(-4px); }
.fe-pricing-popular-badge {
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
}
.fe-pricing-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.fe-pricing-desc {
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  opacity: 0.8;
}
.fe-pricing-price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 2rem;
}
.fe-pricing-amount {
  font-size: 2.5rem;
  font-weight: 800;
}
.fe-pricing-period {
  font-size: 0.875rem;
  opacity: 0.7;
}
.fe-pricing-features {
  list-style: none;
  margin-bottom: 2rem;
}
.fe-pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.875rem;
}
.fe-pricing-features li .check-icon {
  width: 1.25rem; height: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

/* === Testimonial Cards === */
.fe-testimonials-carousel {
  position: relative;
}
.fe-testimonials-viewport {
  overflow: hidden;
}
.fe-testimonials-track {
  display: flex;
  transform: translateX(0);
  transition: transform 450ms cubic-bezier(.4,0,.2,1);
  will-change: transform;
}
.fe-testimonials-slide {
  min-width: 100%;
  padding: 0.5rem 0;
}
.fe-testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}
@media (max-width: 768px) {
  .fe-testimonials-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}

.fe-testimonials-side-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  border: 1px solid rgba(226,232,240,.9);
  background: rgba(255,255,255,.92);
  color: var(--slate-800);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.fe-testimonials-side-btn:hover {
  border-color: var(--blue-300);
  color: var(--blue-600);
  transform: translateY(-50%) scale(1.03);
  box-shadow: var(--shadow-lg);
}
.fe-testimonials-side-btn:active { transform: translateY(-50%) scale(1); }
.fe-testimonials-side-btn-left { left: -1.25rem; }
.fe-testimonials-side-btn-right { right: -1.25rem; }
@media (max-width: 768px) {
  .fe-testimonials-side-btn {
    width: 2.5rem;
    height: 2.5rem;
  }
  .fe-testimonials-side-btn-left { left: -0.75rem; }
  .fe-testimonials-side-btn-right { right: -0.75rem; }
}

.fe-testimonial {
  position: relative;
  padding: 2rem;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--slate-200);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.fe-testimonial:hover { box-shadow: var(--shadow-lg); }
.fe-testimonial-stars { display: flex; gap: 0.25rem; margin-bottom: 1rem; }
.fe-testimonial-stars .star { color: var(--amber-400); font-size: 1rem; }
.fe-testimonial-text {
  color: var(--slate-600);
  font-style: italic;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}
.fe-testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.fe-testimonial-avatar {
  width: 3rem; height: 3rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-500), var(--purple-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
}
.fe-testimonial-name {
  font-weight: 600;
  color: var(--slate-900);
}
.fe-testimonial-role {
  font-size: 0.8125rem;
  color: var(--slate-500);
}

/* === Blog Cards === */
.fe-blog-card {
  border-radius: var(--radius-2xl);
  border: 1px solid var(--slate-200);
  background: #fff;
  overflow: hidden;
  transition: var(--transition);
}
.fe-blog-card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}
.fe-blog-card-img {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  background: linear-gradient(135deg, rgba(59,130,246,.1), rgba(168,85,247,.1));
}
.fe-blog-card-body { padding: 1.5rem; }
.fe-blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--slate-500);
  margin-bottom: 0.75rem;
}
.fe-blog-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}
.fe-blog-card h3 a { transition: var(--transition); }
.fe-blog-card h3 a:hover { color: var(--blue-600); }
.fe-blog-card p {
  color: var(--slate-600);
  font-size: 0.875rem;
  line-height: 1.75;
  margin-bottom: 1rem;
}

/* === Portfolio Cards === */
.fe-portfolio-card {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid var(--slate-200);
  background: linear-gradient(135deg, var(--slate-100), var(--slate-200));
  transition: var(--transition);
}
.fe-portfolio-card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}
.fe-portfolio-card-visual {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, rgba(37,99,235,.1), rgba(168,85,247,.1));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}
.fe-portfolio-card-visual img {
  width: 100%; height: 100%; object-fit: cover;
}
.fe-portfolio-card-body { padding: 1.5rem; }
.fe-portfolio-card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.fe-portfolio-card-tech span {
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  background: var(--slate-100);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--slate-600);
}
.fe-portfolio-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.fe-portfolio-card-client {
  font-size: 0.8125rem;
  color: var(--slate-500);
}

/* === Contact Info === */
.fe-contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}
.fe-contact-info-icon {
  width: 3rem; height: 3rem;
  border-radius: var(--radius-xl);
  background: var(--blue-50);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--blue-600);
  font-size: 1.25rem;
}
.fe-contact-info-item h4 {
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 0.25rem;
}
.fe-contact-info-item p {
  font-size: 0.875rem;
  color: var(--slate-600);
}

/* === Forms === */
.fe-form-group { margin-bottom: 1.25rem; }
.fe-form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-700);
  margin-bottom: 0.375rem;
}
.fe-form-input, .fe-form-textarea, .fe-form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--slate-200);
  background: #fff;
  color: var(--slate-900);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: var(--transition);
  outline: none;
}
.fe-form-input::placeholder, .fe-form-textarea::placeholder {
  color: var(--slate-400);
}
.fe-form-input:focus, .fe-form-textarea:focus, .fe-form-select:focus {
  border-color: transparent;
  box-shadow: 0 0 0 2px var(--blue-500);
}
.fe-form-textarea { resize: vertical; min-height: 6rem; }
.fe-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 640px) { .fe-form-row { grid-template-columns: 1fr; } }
.fe-form-error { color: var(--red-500); font-size: 0.75rem; margin-top: 0.25rem; }

/* === FAQ / Accordion === */
.fe-accordion { max-width: 48rem; margin: 0 auto; }
.fe-accordion-item {
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  margin-bottom: 1rem;
  overflow: hidden;
  background: #fff;
  transition: var(--transition);
}
.fe-accordion-item.active { border-color: var(--blue-300); box-shadow: var(--shadow-md); }
.fe-accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--slate-900);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  transition: var(--transition);
}
.fe-accordion-btn:hover { color: var(--blue-600); }
.fe-accordion-btn .icon {
  transition: transform 0.35s cubic-bezier(.4,0,.2,1), color 0.3s;
  font-size: 1.25rem;
  color: var(--slate-400);
  flex-shrink: 0;
}
.fe-accordion-item.active .fe-accordion-btn { color: var(--blue-600); }
.fe-accordion-item.active .fe-accordion-btn .icon { transform: rotate(45deg); color: var(--blue-600); }
.fe-accordion-collapse {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(.4,0,.2,1), opacity 0.3s ease;
  opacity: 0;
}
.fe-accordion-collapse.open {
  opacity: 1;
}
.fe-accordion-body {
  padding: 0 1.5rem 1.25rem;
  color: var(--slate-600);
  line-height: 1.75;
  font-size: 0.9375rem;
}

/* === Footer === */
.fe-footer {
  background: var(--slate-950);
  color: var(--slate-400);
  border-top: 1px solid var(--slate-800);
}
.fe-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding: 2rem 0;
}
@media (max-width: 1024px) { .fe-footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .fe-footer-grid { grid-template-columns: 1fr; } }
.fe-footer h4 {
  color: #fff;
  font-weight: 600;
  margin-bottom: 1rem;
  font-size: 1rem;
}
.fe-footer-desc {
  font-size: 0.875rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}
.fe-footer-links { list-style: none; }
.fe-footer-links li { margin-bottom: 0.75rem; }
.fe-footer-links a {
  font-size: 0.875rem;
  color: var(--slate-400);
  transition: var(--transition);
}
.fe-footer-links a:hover { color: var(--blue-400); }
.fe-footer-social {
  display: flex;
  gap: 0.75rem;
}
.fe-footer-social a {
  width: 2.25rem; height: 2.25rem;
  border-radius: var(--radius-md);
  background: var(--slate-800);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-400);
  transition: var(--transition);
  font-size: 1rem;
}
.fe-footer-social a:hover { background: var(--blue-600); color: #fff; }
.fe-footer-newsletter { display: flex; gap: 0.5rem; }
.fe-footer-newsletter input {
  flex: 1;
  min-width: 0;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-md);
  background: var(--slate-800);
  border: 1px solid var(--slate-700);
  color: #fff;
  font-size: 0.875rem;
  outline: none;
  font-family: var(--font-sans);
}
.fe-footer-newsletter input::placeholder { color: var(--slate-500); }
.fe-footer-newsletter input:focus { border-color: var(--blue-500); box-shadow: 0 0 0 2px rgba(59,130,246,.3); }
.fe-footer-newsletter button {
  padding: 0.625rem 1rem;
  border-radius: var(--radius-md);
  background: var(--blue-600);
  color: #fff;
  border: none;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  white-space: nowrap;
  flex-shrink: 0;
}
.fe-footer-newsletter button:hover { background: var(--blue-500); }
@media (max-width: 480px) {
  .fe-footer-newsletter { flex-direction: column; }
  .fe-footer-newsletter input { width: 100%; }
  .fe-footer-newsletter button { width: 100%; text-align: center; justify-content: center; }
}
.fe-footer-bottom {
  border-top: 1px solid var(--slate-800);
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.fe-footer-bottom p { font-size: 0.875rem; color: var(--slate-500); }
.fe-footer-bottom-links {
  display: flex; gap: 1.5rem;
}
.fe-footer-bottom-links a {
  font-size: 0.875rem;
  color: var(--slate-500);
  transition: var(--transition);
}
.fe-footer-bottom-links a:hover { color: var(--blue-400); }

/* === Content body (rich text) === */
.fe-content-body h1, .fe-content-body h2, .fe-content-body h3,
.fe-content-body h4, .fe-content-body h5, .fe-content-body h6 {
  color: var(--slate-900);
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 1rem;
}
.fe-content-body p { margin-bottom: 1.25rem; line-height: 1.8; color: var(--slate-600); }
.fe-content-body ul, .fe-content-body ol { padding-left: 1.5rem; margin-bottom: 1.25rem; color: var(--slate-600); }
.fe-content-body li { margin-bottom: 0.5rem; line-height: 1.75; }
.fe-content-body img { border-radius: var(--radius-xl); margin: 1.5rem 0; }
.fe-content-body a { color: var(--blue-600); text-decoration: underline; }
.fe-content-body blockquote {
  border-left: 4px solid var(--blue-500);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--slate-50);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--slate-600);
  font-style: italic;
}

/* === Alert === */
.fe-alert {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-xl);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
}
.fe-alert-success { background: rgba(34,197,94,.05); border: 1px solid rgba(34,197,94,.2); color: var(--green-600); }

/* === Detail page layout === */
.fe-detail-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 3rem;
}
@media (max-width: 1024px) { .fe-detail-grid { grid-template-columns: 1fr; } }

.fe-sidebar-card {
  padding: 1.5rem;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--slate-200);
  background: #fff;
  margin-bottom: 1.5rem;
}
.fe-sidebar-card h4 {
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 1rem;
  font-size: 1rem;
}

/* === Utilities === */
.text-center { text-align: center; }
.text-white { color: #fff !important; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.w-full { width: 100%; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.img-fluid { max-width: 100%; height: auto; border-radius: var(--radius-xl); }