/* ==========================================================================
   Abdullah Ayyash - portfolio
   One shared stylesheet for every page (index, contact, 404).
   ========================================================================== */

/* --- Tokens --------------------------------------------------------------- */
:root {
  --bg: #0a0a0a;
  --surface: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.2);
  --accent: #00ff88;
  --accent-hover: #4dffa8;
  --accent-dim: rgba(0, 255, 136, 0.1);
  --accent-glow: rgba(0, 255, 136, 0.22);
  --text: #f4f6f5;
  --text-2: #a9b1ad; /* 8:1 on --bg */
  --text-3: #7f8884; /* 5:1 on --bg */
  --danger: #ff7a7a;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo,
    Consolas, monospace;

  --header-h: 68px;
  --container: 1120px;
  --radius: 14px;
}

/* --- Reset & base --------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  color-scheme: dark;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  padding: 0;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 3rem, var(--container));
  margin-inline: auto;
}

.icon {
  width: 1em;
  height: 1em;
  fill: currentColor;
  flex: none;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

/* --- Background ----------------------------------------------------------- */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at top, rgba(0, 255, 136, 0.06), transparent 55%),
    radial-gradient(ellipse at bottom, rgba(102, 126, 234, 0.06), transparent 55%);
}

/* Fireflies sit behind the content and never intercept clicks. */
.fireflies {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  contain: strict;
}

.firefly {
  --p: 0; /* pointer proximity 0..1, set from site.js */
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    var(--accent) 0%,
    rgba(0, 255, 136, 0.8) 30%,
    transparent 70%
  );
  box-shadow:
    0 0 calc(10px + var(--p) * 20px) var(--accent),
    0 0 calc(20px + var(--p) * 30px) rgba(0, 255, 136, 0.45);
  filter: brightness(calc(1 + var(--p) * 2));
  opacity: 0;
  will-change: transform, opacity;
  animation: firefly 20s infinite ease-in-out;
}

@keyframes firefly {
  0% { transform: translate(0, 20px) scale(0.5); opacity: 0; }
  10% { opacity: 1; }
  18% { opacity: 0.3; }
  25% { transform: translate(-30px, -15px) scale(1); opacity: 1; }
  40% { transform: translate(20px, -40px) scale(0.7); opacity: 0.25; }
  50% { opacity: 0.9; }
  65% { transform: translate(-15px, -20px) scale(1.2); opacity: 0.15; }
  75% { transform: translate(25px, -10px) scale(0.8); opacity: 0.9; }
  90% { transform: translate(-10px, 5px) scale(0.6); opacity: 0.3; }
  100% { transform: translate(0, 20px) scale(0.5); opacity: 0; }
}

/* Everything real sits above the fireflies. */
.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* --- Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.btn:hover {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

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

.btn-quiet {
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-quiet:hover {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: none;
}

.btn-sm {
  padding: 0.5rem 0.95rem;
  border-radius: 6px;
  font-size: 0.875rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: progress;
}

.btn .icon {
  font-size: 0.85em;
}

/* --- Header & navigation -------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(10, 10, 10, 0.8);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: transform 0.3s ease;
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  text-decoration: none;
}

.logo::before {
  content: "<";
}

.logo::after {
  content: "/>";
}

.nav-list {
  display: none;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-list a:not(.btn) {
  position: relative;
  padding-block: 0.35rem;
  color: var(--text-2);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-list a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.nav-list a:not(.btn):hover,
.nav-list a[aria-current] {
  color: var(--text);
}

.nav-list a:not(.btn):hover::after,
.nav-list a[aria-current]::after {
  width: 100%;
}

.menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-right: -0.5rem;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  transition: color 0.2s ease;
}

.menu-btn:hover {
  color: var(--accent);
}

.menu-btn .icon-close,
.menu-btn[aria-expanded="true"] .icon-open {
  display: none;
}

.menu-btn[aria-expanded="true"] .icon-close {
  display: block;
}

.mobile-menu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 49;
  padding: 0.5rem 0 1rem;
  background: rgba(10, 10, 10, 0.97);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    visibility 0.2s;
}

.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.mobile-menu ul {
  list-style: none;
}

.mobile-menu li + li {
  border-top: 1px solid var(--border);
}

.mobile-menu a {
  display: block;
  padding: 1rem 1.5rem;
  color: var(--text-2);
  font-weight: 500;
  text-decoration: none;
}

.mobile-menu a:hover,
.mobile-menu a[aria-current] {
  background: var(--surface);
  color: var(--accent);
}

@media (min-width: 800px) {
  .nav-list {
    display: flex;
  }

  .menu-btn,
  .mobile-menu {
    display: none;
  }
}

/* Social links: a quiet rail on wide screens, always repeated in the footer. */
.social-rail {
  display: none;
}

@media (min-width: 1300px) {
  .social-rail {
    position: fixed;
    bottom: 0;
    left: max(1rem, calc((100vw - var(--container)) / 2 - 4.25rem));
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    list-style: none;
  }

  .social-rail::after {
    content: "";
    width: 1px;
    height: 96px;
    margin-top: 0.5rem;
    background: var(--border-strong);
  }

  .social-rail a {
    display: inline-flex;
    padding: 0.55rem;
    color: var(--text-2);
    font-size: 1.35rem;
    transition:
      color 0.2s ease,
      transform 0.2s ease;
  }

  .social-rail a:hover {
    color: var(--accent);
    transform: translateY(-3px);
  }
}

/* --- Layout --------------------------------------------------------------- */
main {
  padding-top: var(--header-h);
}

.section {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

main > section + section {
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section-title {
  font-size: clamp(1.75rem, 4.2vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section-intro {
  max-width: 60ch;
  margin-top: 0.75rem;
  color: var(--text-2);
}

/* --- Hero ----------------------------------------------------------------- */
.hero {
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  padding-block: 3rem 4.5rem;
}

.hero-inner {
  width: min(100% - 3rem, var(--container));
  margin-inline: auto;
}

.hero-title {
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.04;
}

.name {
  display: block;
  font-size: clamp(2.8rem, 9vw, 5.75rem);
}

.name-text {
  position: relative;
  display: inline-block;
  animation: type-reveal 1.5s steps(15, end) 0.2s both;
}

/* The text is always in the HTML (crawlers, screen readers, no-JS). Only the
   reveal is animated, and the cursor rides the leading edge, then disappears. */
.name-text::after {
  content: "";
  position: absolute;
  top: 10%;
  bottom: 10%;
  left: 0;
  width: 0.07em;
  background: var(--accent);
  transform: translateX(-100%);
  animation:
    cursor-run 1.5s steps(15, end) 0.2s both,
    cursor-hide 0.2s ease 1.7s forwards;
}

@keyframes type-reveal {
  from { clip-path: inset(0 100% 0 0); }
  to { clip-path: inset(0 0 0 0); }
}

@keyframes cursor-run {
  from { left: 0; }
  to { left: 100%; }
}

@keyframes cursor-hide {
  to { opacity: 0; }
}

.role {
  display: block;
  margin-top: 0.4rem;
  color: var(--text-2);
  font-size: clamp(1.35rem, 3.6vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.tagline {
  max-width: 28em;
  margin-top: 1.5rem;
  color: var(--text);
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  font-weight: 500;
  line-height: 1.4;
}

.hero-bio {
  max-width: 62ch;
  margin-top: 1rem;
  color: var(--text-2);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

/* --- Skills --------------------------------------------------------------- */
.skill-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1.25rem;
}

.skill-group {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.skill-group h3 {
  margin-bottom: 1.1rem;
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
}

.skill-list li {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 500;
}

.skill-list .icon {
  color: var(--accent);
  font-size: 1.15rem;
}

/* --- Projects ------------------------------------------------------------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: 1.25rem;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease;
}

.card:hover,
.card:focus-within {
  border-color: rgba(0, 255, 136, 0.45);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.card-icon {
  flex: none;
  width: 56px;
  height: 56px;
  padding: 6px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  object-fit: contain;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.card-desc {
  color: var(--text-2);
  font-size: 0.95rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
}

.tags li {
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.78rem;
  font-weight: 500;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: auto;
  padding-top: 0.25rem;
}

.badge {
  align-self: flex-start;
  margin-left: auto;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(0, 255, 136, 0.5);
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
}

.card-featured {
  grid-column: 1 / -1;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border-color: rgba(0, 255, 136, 0.4);
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.08), rgba(0, 255, 136, 0.02)),
    var(--surface);
}

.card-featured .card-icon {
  width: 72px;
  height: 72px;
}

.card-featured h3 {
  font-size: 1.5rem;
}

.card-featured .card-desc {
  font-size: 1.05rem;
}

@media (min-width: 800px) {
  .card-featured {
    display: grid;
    grid-template-columns: minmax(0, 24rem) minmax(0, 1fr);
    grid-template-areas:
      "head desc"
      "tags actions";
    column-gap: 3rem;
    row-gap: 1.25rem;
    align-items: start;
  }

  .card-featured .card-head { grid-area: head; }
  .card-featured .card-desc { grid-area: desc; }
  .card-featured .tags { grid-area: tags; }
  .card-featured .card-actions { grid-area: actions; margin-top: 0; }
}

/* --- Footer --------------------------------------------------------------- */
.site-footer {
  padding-block: 2.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 2rem;
}

.footer-nav,
.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  list-style: none;
}

.footer-nav a {
  display: inline-block;
  padding-block: 0.5rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer-social {
  gap: 0.6rem;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 1.05rem;
  transition:
    color 0.2s ease,
    border-color 0.2s ease;
}

.footer-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.footer-copy {
  flex-basis: 100%;
  color: var(--text-3);
}

/* --- Contact page --------------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem 4rem;
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

@media (min-width: 900px) {
  .contact {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
}

.contact-intro h1 {
  font-size: clamp(2rem, 5.5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.contact-intro > p {
  max-width: 42ch;
  margin-top: 1rem;
  color: var(--text-2);
  font-size: 1.05rem;
}

.contact-links {
  display: grid;
  gap: 0.25rem;
  margin-top: 2rem;
  list-style: none;
}

.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding-block: 0.4rem;
  color: var(--text-2);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-links a:hover {
  color: var(--accent);
}

.contact-links .icon {
  color: var(--accent);
  font-size: 1.15rem;
}

.form-card {
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  column-gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
}

.field label {
  font-size: 0.9rem;
  font-weight: 500;
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease;
}

.field textarea {
  min-height: 9rem;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-3);
}

.field input:focus-visible,
.field textarea:focus-visible {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.06);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Honeypot: hidden from people and assistive tech, bots still fill it in. */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin-top: 1.1rem;
  padding: 0.85rem 1rem;
  border: 1px solid;
  border-radius: 8px;
  font-size: 0.95rem;
}

.form-status[hidden] {
  display: none;
}

.form-status .icon {
  margin-top: 0.2rem;
  font-size: 1.05rem;
}

.form-status.is-success {
  border-color: rgba(0, 255, 136, 0.45);
  background: var(--accent-dim);
  color: var(--accent);
}

.form-status.is-error {
  border-color: rgba(255, 122, 122, 0.5);
  background: rgba(255, 122, 122, 0.08);
  color: var(--danger);
}

/* --- 404 ------------------------------------------------------------------ */
.not-found {
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  padding-block: 3rem;
}

.not-found h1 {
  font-size: clamp(2.2rem, 7vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.not-found p {
  max-width: 40ch;
  margin-top: 1rem;
  color: var(--text-2);
}

.not-found .hero-actions {
  margin-top: 1.75rem;
}

/* --- Scrollbar ------------------------------------------------------------ */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #111;
}

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 4px;
}

/* --- Reduced motion ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .fireflies {
    display: none;
  }

  .name-text {
    clip-path: none;
    animation: none;
  }

  .name-text::after {
    display: none;
  }
}