:root {
  --bg-dark: #0a0c10;
  --bg-surface: #121620;
  --bg-surface-elevated: #1a1f2c;

  --text-main: #f0f4f8;
  --text-muted: #a3b3c9;

  --primary: #38bdf8;
  --primary-hover: #0ea5e9;
  --accent: #a855f7;

  --font-sans: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --border-glow: rgba(56, 189, 248, 0.15);
  --line-ui: rgba(255, 255, 255, 0.03);

  --transition: all 0.2s ease-in-out;
}

::selection {
  background-color: rgba(168, 85, 247, 0.3);
  color: var(--text-main);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 90px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

*:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--primary);
  color: var(--bg-dark);
  padding: 1rem;
  z-index: 9999;
  font-weight: bold;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 0;
}
.small-container {
  max-width: 600px;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background-color: var(--primary);
  color: var(--bg-dark);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--text-muted);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-text {
  background: transparent;
  color: var(--text-muted);
}
.btn-text:hover {
  color: var(--text-main);
}
.btn-block {
  width: 100%;
  display: block;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

section {
  position: relative;
  border-bottom: 1px solid var(--line-ui);
}

section::after {
  content: "[HELLO_WORLD!]";
  position: absolute;
  top: 4px;
  right: 5%;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.05);
  letter-spacing: 0.1em;
}

.main-header {
  background-color: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(8px);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid var(--border-glow);
}
.header-container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  height: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
}
.logo-accent {
  color: var(--primary);
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition);
}
.nav-links a:hover {
  color: var(--text-main);
}

.portfolio-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10; /* Clean cinematic box ratio */
  overflow: hidden;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--line-ui);
}
.portfolio-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Premium aesthetic: Blur and desaturate until hovered */
  filter: blur(4px) brightness(0.6) grayscale(30%);
  transform: scale(1.02); /* Prevents the blur filter from showing pixelated edges */
  transition:
    filter 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  object-position: top center;
}
/* Floating Hyperlink Arrow Anchor */
.project-link-arrow {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background-color: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--primary);
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  z-index: 5;
  transition: var(--transition);
  opacity: 0.7;
}

.project-link-arrow:hover {
  background-color: var(--primary);
  color: var(--bg-dark);
  border-color: var(--primary);
  transform: scale(1.05);
}

/* Unified Card Hover Responses */
.portfolio-card:hover .portfolio-img {
  filter: blur(0px) brightness(1) grayscale(0%);
  transform: scale(1);
}

.portfolio-card:hover .project-link-arrow {
  opacity: 1;
  border-color: var(--accent);
  color: var(--accent);
}

.portfolio-section {
  background-color: var(--bg-dark);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}

.portfolio-card {
  background-color: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  transform: translateY(-6px);
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: 0 15px 35px -15px rgba(168, 85, 247, 0.15);
}

.portfolio-content {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  display: block;
}

.portfolio-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.project-summary {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  margin-bottom: 1.5rem;
}

.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.p-stat {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.p-stat strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 70px;
  background:
    radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.03), transparent 40%),
    radial-gradient(circle at 10% 80%, rgba(56, 189, 248, 0.03), transparent 50%);
}
.hero-container {
  width: 90%;
  max-width: 800px;
  margin: 0 auto;
}
.hero-tagline {
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.hero-description {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.services-section {
  background-color: var(--bg-surface);
  clip-path: polygon(0 2.5vw, 100% 0, 100% 100%, 0 100%);
  padding-top: 4rem;
}
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}
.section-header p {
  color: var(--text-muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.service-card {
  background-color: var(--bg-surface-elevated);
  padding: 2.5rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.02);
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-5px);
  background: linear-gradient(
    135deg,
    var(--bg-surface-elevated) 0%,
    rgba(26, 31, 44, 0.4) 100%
  );
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 10px 30px -15px rgba(56, 189, 248, 0.15);
}
.card-icon {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}
.service-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.35rem;
}
.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.stack-section {
  background-color: var(--bg-dark);
  position: relative;
}
.stack-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--primary) 0%,
    var(--accent) 50%,
    transparent 100%
  );
  opacity: 0.6;
}
.stack-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  align-items: center;
}
.stack-text h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}
.stack-text p {
  color: var(--text-muted);
}
.stack-stats {
  display: flex;
  gap: 2rem;
}
.stat-box {
  background-color: var(--bg-surface);
  padding: 2rem;
  border-radius: 6px;
  flex: 1;
  text-align: center;
  border-left: 3px solid var(--accent);
}
.stat-number {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.contact-section {
  background-color: var(--bg-surface-elevated);
  border-top: 1px solid rgba(168, 85, 247, 0.2);
}
.contact-form {
  margin-top: 2rem;
}
.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background-color: var(--bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.75rem;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 1rem;
  border-radius: 4px;
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1);
  outline: none;
}
.form-group:focus-within label::before {
  content: "> ";
  color: var(--primary);
  font-weight: bold;
}

.main-footer {
  background-color: var(--bg-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 768px) {
  #primary-navigation {
    position: fixed;
    top: 70px;
    right: 0;
    bottom: 0;
    width: 75%;
    max-width: 300px;
    background-color: var(--bg-surface-elevated);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    padding: 3rem 2rem;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
    display: block;
    height: calc(100vh - 70px);
    overflow-y: auto;
  }

  #primary-navigation.nav-active {
    transform: translateX(0);
  }

  .nav-links {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    width: 100%;
    list-style: none;
  }

  .nav-links li {
    width: 100%;
    display: block;
  }
  .nav-links a {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
  }

  .nav-links li a:not(.btn-secondary):hover {
    background-color: rgba(255, 255, 255, 0.05);
  }
  .nav-links .btn-secondary {
    display: block;
    width: 100%;
    text-align: center;
    padding: 0.75rem 1rem;
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
  }
  .nav-links .btn-secondary:hover {
    background-color: var(--primary);
    color: var(--bg-dark);
  }

  .menu-toggle {
    display: block;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 101;
  }

  .hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    position: relative;
    transition: background-color 0.2s ease-in-out;
  }

  .hamburger::before,
  .hamburger::after {
    content: "";
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    transition:
      transform 0.2s ease-in-out,
      top 0.2s ease-in-out;
  }

  .hamburger::before {
    top: -6px;
  }
  .hamburger::after {
    top: 6px;
  }
  .nav-links .btn-secondary:hover {
    background-color: var(--primary);
    color: var(--bg-dark);
  }

  .menu-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
  }
  .menu-toggle[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
  }
  .menu-toggle[aria-expanded="true"] .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
  }
}
/* Pricing Explicit Module Layout Overrides */
.pricing-wrapper {
  padding-top: 120px;
  min-height: calc(100vh - 78px);
  background: radial-gradient(
    circle at 50% 10%,
    rgba(168, 85, 247, 0.02),
    transparent 40%
  );
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  align-items: stretch;
}
.pricing-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--line-ui);
  border-radius: 8px;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.pricing-card.featured {
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 10px 30px -15px rgba(56, 189, 248, 0.15);
}
.pricing-card.featured::before {
  content: "MOST_POPULAR";
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background-color: rgba(56, 189, 248, 0.1);
  color: var(--primary);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid rgba(56, 189, 248, 0.2);
}
.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: 0 15px 35px -15px rgba(168, 85, 247, 0.2);
}
.plan-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  display: block;
}
.pricing-card h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  font-weight: 700;
}
.plan-price {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line-ui);
}
.price-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}
.price-sub {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 0.25rem;
}
.plan-features {
  list-style: none;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.plan-features li {
  font-size: 0.95rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.plan-features li::before {
  content: "✓";
  color: var(--primary);
  font-family: var(--font-mono);
  font-weight: bold;
}
.pricing-card .btn {
  margin-top: auto;
}
/* ==========================================================================
   3.8 INTERACTIVE FAQ FILTER CONSOLE
   ========================================================================== */
.faq-section {
  background-color: var(--bg-surface);
}

.faq-controls {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.faq-tab {
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  background-color: var(--bg-dark);
  color: var(--text-muted);
  border: 1px solid var(--line-ui);
}

.faq-tab:hover,
.faq-tab.active {
  color: var(--primary);
  border-color: var(--primary);
  background-color: rgba(56, 189, 248, 0.02);
}

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

.faq-item {
  background-color: var(--bg-surface-elevated);
  border: 1px solid rgba(255, 255, 255, 0.02);
  border-radius: 6px;
  overflow: hidden;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

/* Hidden sorting state trigger */
.faq-item.hidden {
  display: none;
  opacity: 0;
}

.faq-trigger {
  width: 100%;
  background: transparent;
  border: none;
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  cursor: pointer;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.05rem;
  gap: 1.5rem;
}
.faq-trigger:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: -4px;
  border-radius: 6px;
}

.faq-question {
  transition: var(--transition);
}

.faq-trigger:hover .faq-question {
  color: var(--primary);
}

.faq-icon {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.2rem;
  transition: transform 0.25s ease;
}

/* Animation state rules when expanded */
.faq-item.expanded .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.3s cubic-bezier(0, 1, 0, 1),
    padding 0.3s ease;
  padding: 0 1.5rem;
}

.faq-item.expanded .faq-panel {
  max-height: 1000px; /* Large safe value for pure CSS accordion */
  transition:
    max-height 0.3s cubic-bezier(1, 0, 1, 0),
    padding 0.3s ease;
  padding: 0 1.5rem 1.5rem 1.5rem;
}

.faq-panel p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-footer-cta {
  margin-top: 3.5rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (min-width: 769px) {
  .menu-toggle {
    display: none;
  }
}

.status-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background-color: rgba(255, 255, 255, 0.02);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: #22c55e;
  border-radius: 50%;
  position: relative;
}

.status-dot::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #22c55e;
  border-radius: 50%;
  animation: radar-pulse 1.8s infinite ease-out;
}

@keyframes radar-pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(3.5);
    opacity: 0;
  }
}

.cursor {
  font-weight: 300;
  color: var(--primary);
  animation: cursor-blink 1s infinite steps(2);
  margin-left: 2px;
}

@keyframes cursor-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

@media (max-width: 480px) {
  .status-wrapper {
    display: none;
  }
}

.service-card,
.portfolio-card,
.stat-box {
  position: relative;
  transition: var(--transition);
}

.service-card:hover,
.portfolio-card:hover {
  transform: translateY(-6px);
  background: linear-gradient(
    145deg,
    var(--bg-surface-elevated) 0%,
    rgba(18, 22, 32, 0.9) 100%
  );
  box-shadow: 0 15px 30px -15px rgba(56, 189, 248, 0.15);
}

.stat-box:hover {
  border-left-color: var(--primary);
  box-shadow: 0 10px 25px -15px rgba(168, 85, 247, 0.15);
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(18, 22, 32, 0.8);
  backdrop-filter: blur(8px);
  color: var(--primary);
  border: 1px solid rgba(56, 189, 248, 0.2);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 98;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease,
    border-color 0.2s;

  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
}

.back-to-top:hover {
  border-color: var(--accent);
  color: var(--text-main);
  transform: translateY(-2px);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
  }
  .project-link-arrow {
    opacity: 1;
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }
}