/* ============================================================
   FONT FACE DECLARATIONS
   ============================================================ */

@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-semibold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ============================================================
   CUSTOM PROPERTIES
   ============================================================ */

:root {
  /* Colors */
  --color-bg: #1a1d23;
  --color-surface: #252930;
  --color-accent-blue: #4a6fa5;
  --color-accent-teal: #3d8b85;
  --color-text-primary: #d0d5dd;
  --color-text-secondary: #8b939e;
  --color-cta: #5a9bf5;
  --color-border: #333840;

  /* Typography */
  --font-sans:
    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1100px;
  --navbar-height: 4rem; /* 64px */
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
}

/* ============================================================
   RESET & BASE
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-cta);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Focus ring — keyboard only */
:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Remove default list styling */
ul {
  list-style: none;
}

/* ============================================================
   SKIP LINK
   ============================================================ */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  padding: var(--space-3) var(--space-6);
  background: var(--color-cta);
  color: var(--color-bg);
  font-weight: 600;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.section {
  padding-block: var(--space-20);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-24);
  }
}

/* ============================================================
   NAVBAR
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--navbar-height);
  background-color: color-mix(in srgb, var(--color-surface) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo span[aria-hidden] {
  display: flex;
  flex-shrink: 0;
}

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

.logo-text {
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* Nav list */
.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-link {
  position: relative;
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  padding-block: var(--space-1);
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-teal);
  border-radius: 1px;
  transition: width 0.25s ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-text-primary);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

/* Hamburger button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius);
  transition: background-color 0.2s ease;
}

.hamburger:hover {
  background-color: var(--color-border);
}

.hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 1px;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
  transform-origin: center;
}

/* Hamburger → X morphing */
.hamburger[aria-expanded='true'] .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded='true'] .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded='true'] .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 767px) {
  .hamburger {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-4) var(--space-6);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition:
      opacity 0.25s ease,
      transform 0.25s ease,
      visibility 0s linear 0.25s;
    z-index: 99;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition:
      opacity 0.25s ease,
      transform 0.25s ease,
      visibility 0s linear 0s;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .nav-link {
    font-size: 1.0625rem;
    width: 100%;
    padding-block: var(--space-3);
    padding-inline: var(--space-2);
    min-height: 48px;
  }
}

/* ============================================================
   HERO SECTION
   ============================================================ */

.section--hero {
  min-height: calc(100svh - var(--navbar-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Subtle radial gradient accent */
.section--hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(
    ellipse at center,
    color-mix(in srgb, var(--color-accent-blue) 12%, transparent),
    transparent 70%
  );
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-12);
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-teal);
  margin-bottom: var(--space-4);
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-size: clamp(1.0625rem, 2.5vw, 1.3125rem);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  max-width: 680px;
  line-height: 1.5;
}

.hero-sub {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
}

.availability-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-accent-teal);
  border-radius: 999px;
  font-size: 0.8125rem;
  color: var(--color-accent-teal);
  line-height: 1;
}

.availability-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-accent-teal);
  flex-shrink: 0;
}

/* Scroll hint chevron */
.scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-secondary);
  opacity: 0.5;
  animation: scroll-bounce 2s ease-in-out infinite;
  transition: opacity 0.4s ease;
}

.scroll-hint.is-hidden {
  opacity: 0;
  pointer-events: none;
}

@keyframes scroll-bounce {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint {
    animation: none;
  }
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.625rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
  transition:
    background-color 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.btn--primary {
  background-color: var(--color-accent-blue);
  color: #fff;
}

.btn--primary:hover {
  background-color: var(--color-cta);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--color-cta) 30%, transparent);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: none;
}

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

.btn--secondary:hover {
  border-color: var(--color-accent-teal);
  color: var(--color-text-primary);
  background-color: color-mix(in srgb, var(--color-accent-teal) 8%, transparent);
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */

.section--services {
  background: linear-gradient(
    180deg,
    var(--color-surface) 0%,
    color-mix(in srgb, var(--color-surface) 94%, var(--color-accent-teal)) 100%
  );
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-size: clamp(1.625rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.015em;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-12);
  max-width: 540px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

/* Service card */
.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

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

.service-card:hover {
  border-color: var(--color-accent-teal);
  box-shadow: 0 4px 24px color-mix(in srgb, var(--color-accent-teal) 12%, transparent);
}

.card-icon {
  color: var(--color-accent-teal);
  margin-bottom: var(--space-5);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.skills-strip {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skills-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.skills-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-right: 0.25rem;
  white-space: nowrap;
}

.skills-tag {
  display: inline-block;
  padding: 0.375rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface);
  font-size: 0.875rem;
  color: var(--color-text-primary);
  line-height: 1.4;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */

.section--about {
  background: linear-gradient(
    180deg,
    var(--color-surface) 0%,
    color-mix(in srgb, var(--color-surface) 94%, var(--color-accent-blue)) 100%
  );
  border-top: 1px solid var(--color-border);
}

.about-inner {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}

.about-bio {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-top: var(--space-4);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */

.section--contact {
  background: linear-gradient(
    180deg,
    var(--color-bg) 0%,
    color-mix(in srgb, var(--color-bg) 94%, var(--color-accent-teal)) 100%
  );
}

.contact-inner {
  max-width: 640px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.contact-desc {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-location {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-6);
}

.location-icon {
  color: var(--color-accent-teal);
  flex-shrink: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

@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;
  }

  .service-card {
    opacity: 1;
    transform: none;
  }
}