/* ============================================
   Free Style Code Technologies — Main Styles
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

/* --- Custom Properties --- */
:root {
  /* Colors — derived from logo */
  --clr-red: #e74c3c;
  --clr-green: #2ecc71;
  --clr-blue: #3498db;
  --clr-black: #000000;
  --clr-white: #ffffff;
  --clr-gray-light: #f9f9f9;
  --clr-gray-mid: #e0e0e0;
  --clr-gray-text: #555555;
  --clr-charcoal: #2c3e50;
  --clr-charcoal-deep: #1a252f;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Mono', 'Consolas', 'Courier New', monospace;
  --font-code: 'Consolas', 'Courier New', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 102px;

  /* Transitions */
  --transition: 200ms ease;
}

/* --- Base Typography --- */
body {
  font-family: var(--font-body);
  color: var(--clr-black);
  background-color: var(--clr-white);
  font-size: 1rem;
  font-weight: 400;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--clr-blue);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--clr-gray-text);
  line-height: 1.75;
  max-width: 72ch;
}

code, .mono {
  font-family: var(--font-code);
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-2xl) 0;
}

.section--alt {
  background-color: var(--clr-gray-light);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.text-center { text-align: center; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 2px solid transparent;
  transition: all var(--transition);
  position: relative;
}

.btn--primary {
  background-color: var(--clr-red);
  color: var(--clr-white);
  border-color: var(--clr-red);
}

.btn--primary:hover {
  background-color: transparent;
  color: var(--clr-red);
}

.btn--outline {
  background-color: transparent;
  color: var(--clr-blue);
  border-color: var(--clr-blue);
}

.btn--outline:hover {
  background-color: var(--clr-blue);
  color: var(--clr-white);
}

.btn--green {
  background-color: var(--clr-green);
  color: var(--clr-white);
  border-color: var(--clr-green);
}

.btn--green:hover {
  background-color: transparent;
  color: var(--clr-green);
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--clr-white);
  border-bottom: 1px solid var(--clr-gray-mid);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header--scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

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

.site-header__logo {
  display: flex;
  align-items: center;
}

.site-header__logo img {
  height: 96px;
  width: auto;
}

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

.site-nav__link {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-black);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition);
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--clr-red);
  transition: width var(--transition);
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--clr-blue);
}

.site-nav__link:hover::after,
.site-nav__link--active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: 1001;
}

.menu-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--clr-black);
  transition: all var(--transition);
}

.menu-toggle--active .menu-toggle__bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle--active .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle--active .menu-toggle__bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-2xl);
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero__tag {
  font-family: var(--font-code);
  font-size: 0.8125rem;
  color: var(--clr-green);
  margin-bottom: var(--space-md);
  display: block;
}

.hero__title {
  margin-bottom: var(--space-lg);
  line-height: 1.15;
}

.hero__title .accent-red { color: var(--clr-red); }
.hero__title .accent-green { color: var(--clr-green); }
.hero__title .accent-blue { color: var(--clr-blue); }

.hero__desc {
  font-size: 1.0625rem;
  margin-bottom: var(--space-lg);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__code-block {
  background-color: var(--clr-charcoal);
  color: var(--clr-white);
  border: 1px solid #3a4a5a;
  padding: var(--space-lg);
  font-family: var(--font-code);
  font-size: 0.8125rem;
  line-height: 1.9;
  width: 100%;
  max-width: 480px;
  position: relative;
  overflow: hidden;
}

.hero__code-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--clr-green);
}

.code-line-num {
  color: #5a6a7a;
  user-select: none;
  margin-right: var(--space-md);
}

.code-keyword { color: var(--clr-red); }
.code-string { color: var(--clr-green); }
.code-func { color: var(--clr-blue); }
.code-comment { color: #5a6a7a; font-style: italic; }
.code-punct { color: #8a9aaa; }

/* --- About Section --- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about__text h2 {
  margin-bottom: var(--space-lg);
}

.about__text p {
  margin-bottom: var(--space-md);
}

.about__points {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.about__point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  border-left: 3px solid var(--clr-green);
  background-color: var(--clr-gray-light);
}

.about__point-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--clr-green);
}

.about__point-text {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--clr-black);
}

/* --- Tech Stack Section --- */
.tech-stack__heading {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.tech-stack__heading p {
  margin: var(--space-md) auto 0;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-lg);
}

.tech-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border: 1px solid var(--clr-gray-mid);
  transition: all var(--transition);
  text-align: center;
}

.tech-card:hover {
  border-color: var(--clr-blue);
  transform: translateY(-2px);
}

.tech-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tech-card__icon svg {
  width: 40px;
  height: 40px;
}

.tech-card__name {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--clr-black);
}

/* --- Services Page --- */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-xl));
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--clr-gray-mid);
}

.page-hero__tag {
  font-family: var(--font-code);
  font-size: 0.8125rem;
  color: var(--clr-green);
  margin-bottom: var(--space-sm);
}

.page-hero h1 {
  margin-bottom: var(--space-md);
}

.page-hero p {
  font-size: 1.0625rem;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.service-block {
  padding: var(--space-xl);
  border: 1px solid var(--clr-gray-mid);
  position: relative;
  transition: border-color var(--transition);
}

.service-block:hover {
  border-color: var(--clr-blue);
}

.service-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.service-block:nth-child(1)::before { background-color: var(--clr-red); }
.service-block:nth-child(2)::before { background-color: var(--clr-green); }
.service-block:nth-child(3)::before { background-color: var(--clr-blue); }
.service-block:nth-child(4)::before { background-color: var(--clr-red); }

.service-block__num {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--clr-gray-text);
  margin-bottom: var(--space-md);
}

.service-block h3 {
  margin-bottom: var(--space-md);
  color: var(--clr-black);
}

.service-block p {
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.service-block__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.service-block__feature {
  font-family: var(--font-code);
  font-size: 0.8125rem;
  color: var(--clr-black);
  padding: var(--space-xs) 0;
}

.service-block__feature::before {
  content: '→ ';
  color: var(--clr-green);
}

/* --- Portfolio Page --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.project-card {
  border: 1px solid var(--clr-gray-mid);
  overflow: hidden;
  transition: border-color var(--transition);
}

.project-card:hover {
  border-color: var(--clr-blue);
}

.project-card__visual {
  width: 100%;
  /* height: 220px; */
  background-color: var(--clr-charcoal);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.project-card__visual-placeholder {
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: #5a6a7a;
  text-align: center;
  padding: var(--space-md);
}

.project-card__visual-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.06;
}

.project-card__visual-lines span {
  display: block;
  height: 1px;
  background-color: var(--clr-white);
  margin-bottom: 12px;
}

.project-card__body {
  padding: var(--space-lg);
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--clr-black);
  margin-bottom: var(--space-sm);
}

.project-card__desc {
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.tag {
  font-family: var(--font-code);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.25rem 0.625rem;
  border: 1px solid var(--clr-gray-mid);
  color: var(--clr-charcoal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.project-card__link {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--clr-blue);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  transition: color var(--transition);
}

.project-card__link:hover {
  color: var(--clr-red);
}

.project-card__link::after {
  content: '→';
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-info__block h3 {
  font-size: 1rem;
  color: var(--clr-black);
  margin-bottom: var(--space-md);
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.contact-info__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--clr-green);
  margin-top: 2px;
}

.contact-info__text {
  font-size: 0.9375rem;
  color: var(--clr-gray-text);
  line-height: 1.6;
}

.contact-info__text a {
  color: var(--clr-blue);
  transition: color var(--transition);
}

.contact-info__text a:hover {
  color: var(--clr-red);
}

.map-placeholder {
  width: 100%;
  height: 200px;
  background-color: var(--clr-charcoal);
  border: 1px solid #3a4a5a;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-md);
}

.map-placeholder span {
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: #5a6a7a;
}

/* --- Contact Form --- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-black);
}

.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--clr-gray-mid);
  background-color: var(--clr-white);
  font-size: 0.9375rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--clr-blue);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-status {
  display: none;
  font-family: var(--font-code);
  font-size: 0.8125rem;
  padding: var(--space-md);
}

.form-status--success {
  display: block;
  color: var(--clr-green);
  border: 1px solid var(--clr-green);
}

.form-status--error {
  display: block;
  color: var(--clr-red);
  border: 1px solid var(--clr-red);
}

/* --- Footer --- */
.site-footer {
  background-color: var(--clr-charcoal);
  color: var(--clr-white);
  padding: var(--space-xl) 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
}

.footer__brand img {
  height: 92px;
  width: auto;
  margin-bottom: var(--space-md);
  filter: brightness(0) invert(1);
}

.footer__brand p {
  color: #8a9aaa;
  font-size: 0.875rem;
  max-width: 36ch;
}

.footer__col h4 {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}

.footer__col a {
  display: block;
  font-size: 0.875rem;
  color: #8a9aaa;
  margin-bottom: var(--space-sm);
  transition: color var(--transition);
}

.footer__col a:hover {
  color: var(--clr-white);
}

.footer__bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid #3a4a5a;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__bottom p {
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: #5a6a7a;
}

.footer__bottom a {
  color: #8a9aaa;
  font-size: 0.75rem;
  transition: color var(--transition);
}

.footer__bottom a:hover {
  color: var(--clr-white);
}

/* --- Responsive --- */
@media (max-width: 992px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    order: -1;
  }

  .hero__code-block {
    max-width: 100%;
  }

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

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

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

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .menu-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg);
    background-color: var(--clr-white);
    border-left: 1px solid var(--clr-gray-mid);
    transition: right 300ms ease;
    gap: var(--space-md);
    z-index: 1002;
  }

  .site-nav--open {
    right: 0;
  }

  .site-nav__link {
    font-size: 1rem;
    padding: var(--space-sm) 0;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--space-xl));
    padding-bottom: var(--space-xl);
  }

  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.8125rem;
  }

  .tech-grid {
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: var(--space-md);
  }

  .service-block {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .project-card__visual {
    /* height: 160px; */
  }
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  opacity: 0;
  transform: translateY(20px);
}

.animate-in--visible {
  animation: fadeInUp 0.5s ease forwards;
}

/* --- Mobile Nav Overlay --- */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 999;
}

.nav-overlay--visible {
  display: block;
}