/* Ahmed Limam — landing page
   Dark theme. Flat colors only: no gradients. */

:root {
  --bg: #0E1117;
  --surface: #161C26;
  --surface-2: #1B2230;
  --ink: #EDF1F7;
  --muted: #9AA5B5;
  --line: #263041;
  --accent: #FF6B3D;      /* signal orange — primary attention */
  --accent-soft: rgba(255, 107, 61, 0.12);
  --accent-2: #67E8F9;    /* cyan — secondary highlight */
  --green: #3ED598;
  --radius: 10px;
  --max-width: 46rem;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", Consolas, "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 4.5rem;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2rem);
}

/* ---------- scroll progress ---------- */

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--accent);
  z-index: 50;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(14, 17, 23, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-block: 0.95rem;
}

.site-name {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}

.site-name:hover {
  color: var(--accent);
}

.site-header nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  position: relative;
  padding-block: 0.2rem;
  transition: color 0.2s ease;
}

.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s cubic-bezier(0.2, 0.65, 0.25, 1);
}

.site-header nav a:hover,
.site-header nav a.active {
  color: var(--ink);
}

.site-header nav a:hover::after,
.site-header nav a.active::after {
  transform: scaleX(1);
}

/* ---------- hero ---------- */

.hero {
  padding-block: 5rem 0.5rem;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.75rem;
  padding: 0.35rem 0.9rem 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
}

@media (prefers-reduced-motion: no-preference) {
  .dot {
    animation: pulse 2.4s ease-out infinite;
  }
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(62, 213, 152, 0.45); }
  70%  { box-shadow: 0 0 0 10px rgba(62, 213, 152, 0); }
  100% { box-shadow: 0 0 0 0 rgba(62, 213, 152, 0); }
}

h1 {
  font-size: clamp(2.5rem, 8vw, 3.9rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 1rem;
}

.role {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 1.4rem;
}

.lede {
  max-width: 38rem;
  margin: 0;
}

.cta-links {
  list-style: none;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
  padding: 0;
  margin: 1.9rem 0 0;
}

.cta-links a {
  display: inline-block;
  padding: 0.5rem 1.15rem;
  border: 1px solid #3A4658;
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.cta-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.cta-links a.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #14100C;
  font-weight: 600;
}

.cta-links a.primary:hover {
  background: #FF8259;
  border-color: #FF8259;
  color: #14100C;
}

/* ---------- sections ---------- */

section {
  padding-top: 3.4rem;
}

h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 1.5rem;
}

h2::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  margin-top: 0.6rem;
}

/* ---------- cards ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.7rem;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  border-color: #3A4658;
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.entry h3,
.skill h3,
.team-card h3 {
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0;
}

.meta {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0.35rem 0 1rem;
}

.entry ul {
  margin: 0;
  padding-left: 1.2rem;
}

.entry li {
  padding-left: 0.35rem;
}

.entry li + li {
  margin-top: 0.75rem;
}

.entry li::marker {
  color: var(--accent);
}

/* ---------- projects ---------- */

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.project-grid .card {
  height: 100%;
}

.aside {
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: 0.98rem;
}

/* ---------- achievements ---------- */

.award-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.award-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.85rem 1rem;
  border: 1px solid transparent;
  border-bottom-color: var(--line);
  border-radius: 6px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.award-list li:hover {
  background: var(--accent-soft);
  border-color: rgba(255, 107, 61, 0.35);
}

.award-list li .meta {
  margin: 0;
}

.award {
  font-weight: 600;
}

.award-list li.featured {
  border-color: rgba(255, 107, 61, 0.45);
  background: var(--accent-soft);
}

.award-list li.featured .award {
  color: var(--accent);
}

.team-card {
  border-left: 3px solid var(--accent-2);
}

.team-card .meta {
  margin-bottom: 0.75rem;
}

/* ---------- skills ---------- */

.skill-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.skill h3 {
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.skill p {
  margin: 0.4rem 0 0;
  font-size: 0.98rem;
}

/* ---------- contact & footer ---------- */

#contact {
  padding-bottom: 6rem;
}

#contact > p {
  max-width: 34rem;
}

.email-link {
  display: inline-block;
  margin: 1.4rem 0 0.5rem;
  font-family: var(--mono);
  font-size: clamp(1.1rem, 3.5vw, 1.55rem);
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.15rem;
  transition: color 0.2s ease;
}

.email-link:hover {
  color: var(--accent);
}

#contact .cta-links {
  margin-top: 2.25rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 1.6rem;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
}

/* ---------- links & states ---------- */

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #14100C;
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: 0 0 6px 0;
  z-index: 60;
  text-decoration: none;
}

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

::selection {
  background: var(--accent);
  color: #14100C;
}

/* ---------- reveal animations ---------- */

html.js .rv {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s cubic-bezier(0.2, 0.65, 0.25, 1),
              transform 0.55s cubic-bezier(0.2, 0.65, 0.25, 1);
}

html.js .rv.on {
  opacity: 1;
  transform: translateY(0);
}

html.js.rv-off .rv {
  opacity: 1;
  transform: none;
  transition: none;
}

/* ---------- small screens ---------- */

@media (max-width: 760px) {
  .project-grid,
  .skill-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.75rem;
  }

  section {
    padding-top: 3.25rem;
  }
}

@media (max-width: 480px) {
  .award-list li {
    flex-direction: column;
    gap: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card,
  .cta-links a,
  .site-header nav a,
  .site-header nav a::after,
  .award-list li {
    transition: none;
  }

  .cta-links a:hover {
    transform: none;
  }

  .card:hover {
    transform: none;
  }
}