@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap");

/* ==========================================================================
   Mohammed Al-Omari —  Backend Engineer Portfolio
   ========================================================================== */

:root {
  /* Premium Dark Theme */
  --bg-color: #050505;
  --bg-surface: #101010;
  --bg-card: #18181a;
  --bg-elevated: #202022;

  --border-color: #27272a;
  --border-glow: rgba(0, 255, 136, 0.2);

  --text-main: #fafafa;
  --text-muted: #a1a1aa;
  --text-dark: #71717a;

  /* Accents */
  --accent-primary: #00e676; /* Sleek matrix/backend green */
  --accent-secondary: #00b0ff; /* Tech blue */
  --accent-glow: rgba(0, 230, 118, 0.4);

  /* Typography */
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --font-mono:
    "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo,
    monospace;

  /* Layout */
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Base Elements */
a {
  color: var(--text-main);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--sm {
  max-width: 800px;
  text-align: center;
}

.section {
  padding: 8rem 0;
  position: relative;
}

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

.text-muted {
  color: var(--text-muted);
}

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

/* ==========================================================================
   Background Effects
   ========================================================================== */
.noise-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.glow-bg {
  position: fixed;
  top: -20%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  filter: blur(100px);
  z-index: -1;
  opacity: 0.5;
  pointer-events: none;
  animation: pulseRotate 20s infinite alternate cubic-bezier(0.5, 0, 0.5, 1);
}

@keyframes pulseRotate {
  0% {
    transform: scale(1) translate(0, 0);
  }
  100% {
    transform: scale(1.2) translate(10%, 10%);
  }
}

/* ==========================================================================
   Buttons & Tags
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn i {
  font-size: 1.1em;
}

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

.btn--primary:hover {
  background-color: transparent;
  color: var(--text-main);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

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

.btn--outline:hover {
  background-color: var(--bg-surface);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn--glass {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.btn--glass:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-radius: 100px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.tag--primary {
  background: rgba(0, 230, 118, 0.1);
  border-color: rgba(0, 230, 118, 0.3);
  color: var(--accent-primary);
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(5, 5, 5, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__logo {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-primary);
  font-size: 1.5rem;
  letter-spacing: -0.05em;
}

.nav__name {
  font-weight: 600;
  font-size: 1.1rem;
  display: none;
}

@media (min-width: 640px) {
  .nav__name {
    display: block;
  }
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__menu a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.nav__menu a:hover {
  color: var(--text-main);
}

.nav__socials {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border-color);
}

.nav__socials a {
  font-size: 1.25rem;
}

.nav__socials a:hover {
  color: var(--accent-primary);
  transform: translateY(-2px);
}

/* Mobile Nav */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 110;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  position: relative;
  transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  transition: all var(--transition-fast);
}

.hamburger::before {
  top: -6px;
}
.hamburger::after {
  top: 6px;
}

@media (max-width: 860px) {
  .nav__toggle {
    display: block;
  }

  .nav__menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: rgba(5, 5, 5, 0.95);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path var(--transition-smooth);
  }

  .nav__menu.is-open {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .nav__socials {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
    margin-top: 1rem;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
}

.hero__content,
.hero__visual {
  min-width: 0;
  max-width: 100%;
}

@media (min-width: 992px) {
  .hero__grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(0, 230, 118, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(0, 230, 118, 0);
  }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__bio {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Code Window */
.code-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition:
    transform var(--transition-smooth),
    border-color var(--transition-fast);
}

.code-window:hover {
  transform: perspective(1000px) rotateY(0) rotateX(0);
  border-color: var(--accent-primary);
}

.code-window__header {
  background: var(--bg-card);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red {
  background: #ff5f56;
}
.dot.yellow {
  background: #ffbd2e;
}
.dot.green {
  background: #27c93f;
}

.filename {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dark);
}

.code-window__body {
  padding: 1.5rem;
  background: var(--bg-surface);
  overflow-x: auto;
}

.code-window__body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
}

code.language-typescript .keyword {
  color: #c678dd;
}
code.language-typescript .function {
  color: #61afef;
}
code.language-typescript .string {
  color: #98c379;
}
code.language-typescript .number {
  color: #d19a66;
}
code.language-typescript .comment {
  color: #5c6370;
  font-style: italic;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section-header {
  margin-bottom: 4rem;
  text-align: left;
}

.section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section__subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* ==========================================================================
   Expertise / Features
   ========================================================================== */
.expertise__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.interactive-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, 0.05),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.interactive-card:hover::before {
  opacity: 1;
}

.interactive-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.card__icon {
  width: 48px;
  height: 48px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.interactive-card:hover .card__icon {
  background: rgba(0, 230, 118, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card__desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-list li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-muted);
}

/* ==========================================================================
   Infinite Marquee
   ========================================================================== */
.skills-marquee-section {
  padding: 2rem 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  white-space: nowrap;
}

.marquee-container {
  display: inline-block;
  animation: scrollMarquee 30s linear infinite;
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dark);
}

.separator {
  color: var(--accent-primary);
}

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

/* ==========================================================================
   Projects
   ========================================================================== */
.projects__list {
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

.project-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.project-showcase__content,
.project-showcase__media {
  min-width: 0;
}

@media (min-width: 900px) {
  .project-showcase {
    grid-template-columns: 1fr 1.2fr;
  }
  .project-showcase--reverse .project-showcase__content {
    order: 2;
  }
  .project-showcase--reverse .project-showcase__media {
    order: 1;
  }
}

.project-showcase__meta {
  margin-bottom: 1rem;
}

.project-showcase__title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.project-showcase__desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-main);
}

.tech-stack li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tech-stack li i {
  color: var(--text-dark);
}

.project-showcase__actions {
  display: flex;
  gap: 1rem;
}

.project-showcase__media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.project-showcase__media img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.glow-hover::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  pointer-events: none;
}

.project-showcase:hover .project-showcase__media img {
  transform: scale(1.03);
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-primary),
    transparent
  );
}

.contact__title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.contact__desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-color);
  padding: 4rem 0 2rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer__brand .nav__logo {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.footer__brand p {
  font-size: 0.95rem;
  font-weight: 500;
}

.footer__socials {
  display: flex;
  gap: 1rem;
}

.footer__socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  font-size: 1.2rem;
}

.footer__socials a:hover {
  background: var(--text-main);
  color: var(--bg-color);
  border-color: var(--text-main);
  transform: translateY(-3px);
}

.footer__bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-dark);
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--delay, 0s);
}

.fade-in {
  opacity: 0;
  animation: fadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--delay, 0s);
}

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

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

/* A11y skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-primary);
  color: var(--bg-color);
  padding: 8px;
  z-index: 1000;
  transition: top var(--transition-fast);
}

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