/* ============================================================
   Abel Atnafu Portfolio — Dark Minimal Theme
   ============================================================ */

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

/* ── Tokens ─────────────────────────────────────────────────── */

:root {
  --accent:       #7c6eff;
  --accent-dim:   rgba(124, 110, 255, 0.15);
  --accent-glow:  rgba(124, 110, 255, 0.35);

  --bg:           #0d0d0d;
  --bg-alt:       #111111;
  --surface:      #161616;
  --surface-hover:#1c1c1c;
  --border:       rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.14);

  --text:         #f0f0f0;
  --text-muted:   #888;
  --text-sub:     #555;

  --radius:       12px;
  --radius-sm:    8px;
  --radius-lg:    20px;
  --transition:   0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-w:        1100px;
  --nav-h:        64px;
}

/* ── Base ────────────────────────────────────────────────────── */

html {
  scroll-behavior: smooth;
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  color: var(--text);
  background: var(--bg);
}

body { line-height: 1.6; overflow-x: hidden; }

a { color: inherit; text-decoration: none; }
strong { font-weight: 700; }
button { cursor: pointer; font-family: var(--font); }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Scroll reveal ───────────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Nav ─────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav.scrolled {
  background: rgba(13, 13, 13, 0.96);
  border-bottom-color: var(--border-hover);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 6px;
}

.nav-links a {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}
.nav-links a.active { color: var(--accent); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────────── */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 80px;
  overflow: hidden;
}

.hero .container { position: relative; z-index: 1; }

.hero-eyebrow {
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.hero-name {
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.0;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 40%, #aaa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(18px, 3vw, 26px);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 18px;
  letter-spacing: -0.3px;
}

.hero-tagline {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-muted);
  max-width: 480px;
  line-height: 1.65;
  margin-bottom: 40px;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  transition: var(--transition);
}
.chip:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--accent-glow); }

.chip-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hover);
}
.chip-outline:hover { border-color: var(--accent); color: var(--accent); box-shadow: none; }

.hero-social {
  display: flex;
  gap: 16px;
}
.hero-social a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}
.hero-social a:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: var(--surface);
}

/* Background glow */
.hero-bg-glow {
  position: absolute;
  top: 20%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 110, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Sections ────────────────────────────────────────────────── */

.section {
  padding: 96px 0;
}
.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.section-title::after {
  content: '.';
  color: var(--accent);
}

.section-sub {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 52px;
  line-height: 1.7;
}

/* ── About ───────────────────────────────────────────────────── */

.about-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 52px;
  align-items: start;
  margin-top: 48px;
}

.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  flex-shrink: 0;
}

.about-text p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 18px;
}
.about-text p strong { color: var(--text); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hover);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-top: 8px;
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ── Skills ──────────────────────────────────────────────────── */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: border-color var(--transition);
}
.skill-group:hover { border-color: var(--border-hover); }

.skill-group-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
}
.tag:hover { color: var(--text); border-color: var(--border-hover); }

.tag-sm {
  padding: 3px 9px;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-dim);
  border-color: transparent;
}

/* ── Projects ────────────────────────────────────────────────── */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(124, 110, 255, 0.1);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-links {
  display: flex;
  gap: 10px;
}
.card-links a {
  color: var(--text-sub);
  transition: color var(--transition);
}
.card-links a:hover { color: var(--text); }

.card-title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ── Contact ─────────────────────────────────────────────────── */

.contact-container { }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  margin-top: 12px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 4px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.contact-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-sub);
}

.contact-email-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact-link {
  font-size: 15px;
  color: var(--text-muted);
  transition: color var(--transition);
  word-break: break-all;
}
.contact-link:hover { color: var(--accent); }

.copy-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-sub); }
.form-group textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.6;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  align-self: flex-start;
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 22px var(--accent-glow);
}
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.form-feedback {
  font-size: 13px;
  font-weight: 500;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  display: none;
}
.form-feedback.success {
  display: block;
  background: rgba(67, 233, 123, 0.1);
  border: 1px solid rgba(67, 233, 123, 0.3);
  color: #4ade80;
}
.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #f87171;
}

/* ── Footer ──────────────────────────────────────────────────── */

.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer p { font-size: 13px; color: var(--text-sub); }
.footer p strong { color: var(--text-muted); }
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-sub);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text); }

/* ── Toast ───────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--surface);
  border: 1px solid var(--border-hover);
  color: var(--text);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  white-space: nowrap;
  z-index: 999;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Responsive ──────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(13, 13, 13, 0.98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px 16px 20px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .about-avatar { width: 80px; height: 80px; font-size: 32px; }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-name { letter-spacing: -1.5px; }
  .section { padding: 72px 0; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}

@media (max-width: 480px) {
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid   { grid-template-columns: 1fr; }
  .hero-chips    { flex-direction: column; align-items: flex-start; }
  .chip          { width: fit-content; }
}