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

:root {
  --clr-bg:        #0d0f14;
  --clr-surface:   #151821;
  --clr-surface2:  #1c2030;
  --clr-border:    #252a38;
  --clr-accent:    #4f8ef7;
  --clr-accent2:   #7c5cbf;
  --clr-text:      #e8ecf4;
  --clr-muted:     #7a8099;
  --clr-em:        #f7a94f;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-card: 0 2px 20px rgba(0,0,0,.45);
  --shadow-glow: 0 0 40px rgba(79,142,247,.12);

  --nav-h: 64px;
  --section-pad: 100px;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  --transition: 0.25s cubic-bezier(.4,0,.2,1);
}

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

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

/* ===================================================
   Utility
=================================================== */
.container {
  width: min(1120px, 100% - 3rem);
  margin-inline: auto;
}

.section { padding: var(--section-pad) 0; }
.section-alt { background: var(--clr-surface); }

.section-label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: .6rem;
}
.section-label.center { text-align: center; }

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}
.section-title.center { text-align: center; }
.section-title em { font-style: italic; color: var(--clr-accent); }

.section-subtitle {
  color: var(--clr-muted);
  max-width: 52ch;
  margin-bottom: 3rem;
}
.section-subtitle + * { margin-top: 0; }
.section-title.center + .section-subtitle { margin-inline: auto; text-align: center; }

/* ===================================================
   Buttons
=================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .7rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 500;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--clr-accent);
  color: #fff;
}
.btn-primary:hover {
  background: #6a9ef8;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(79,142,247,.35);
}

.btn-outline {
  border: 1.5px solid var(--clr-border);
  color: var(--clr-text);
}
.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-1px);
}

.full-width { width: 100%; justify-content: center; }

/* ===================================================
   Navigation
=================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  background: rgba(13, 15, 20, .92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--clr-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(1120px, 100% - 3rem);
  margin-inline: auto;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: .9rem;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--clr-text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===================================================
   Hero
=================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(79,142,247,.1) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 70%, rgba(124,92,191,.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  padding: var(--nav-h) 1.5rem 0;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: .85rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-bottom: .75rem;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, #e8ecf4 30%, #4f8ef7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--clr-muted);
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--clr-muted);
  animation: bounce 2s infinite;
  transition: color var(--transition);
}
.hero-scroll:hover { color: var(--clr-accent); }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ===================================================
   About
=================================================== */
.about-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4rem;
  align-items: center;
}

.about-photo-wrap { flex-shrink: 0; }

.about-photo-placeholder {
  width: 240px;
  height: 280px;
  background: var(--clr-surface);
  border: 1.5px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  color: var(--clr-muted);
  font-size: .85rem;
}

/* When you add a real photo, replace the placeholder div with:
   <img src="photo.jpg" alt="Danilo Diaz" class="about-photo" />
*/
.about-photo {
  width: 240px;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.about-text p { color: var(--clr-muted); margin-bottom: 1rem; }

.about-pills {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.5rem;
}

.pill {
  padding: .35rem .9rem;
  border: 1.5px solid var(--clr-border);
  border-radius: 999px;
  font-size: .8rem;
  color: var(--clr-muted);
  transition: all var(--transition);
}
.pill:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

/* ===================================================
   Apps
=================================================== */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(79,142,247,.3);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(79,142,247,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: .5rem;
}

.card-desc {
  font-size: .9rem;
  color: var(--clr-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: 1.25rem;
}

.tag {
  font-size: .75rem;
  padding: .2rem .65rem;
  background: rgba(79,142,247,.12);
  color: var(--clr-accent);
  border-radius: 999px;
}

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

.card-link {
  font-size: .875rem;
  font-weight: 500;
  color: var(--clr-accent);
  transition: color var(--transition);
}
.card-link:hover { color: #fff; }
.card-link-secondary { color: var(--clr-muted); }
.card-link-secondary:hover { color: var(--clr-text); }

/* ===================================================
   Photography
=================================================== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 240px 240px;
  gap: 12px;
}

.photo-placeholder,
.photo-grid img {
  background: var(--clr-surface);
  border: 1.5px dashed var(--clr-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  color: var(--clr-muted);
  font-size: .8rem;
  overflow: hidden;
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.photo-placeholder.tall { grid-row: span 2; }
.photo-placeholder.wide { grid-column: span 2; }

/* Real images in the grid: just add class "tall" or "wide" for layout */
.photo-grid img { border: none; }

/* ===================================================
   Two-column layout
=================================================== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }

.two-col p {
  color: var(--clr-muted);
  margin-bottom: 1rem;
}

/* ===================================================
   Teaching
=================================================== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  margin-top: 1.5rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
}

.feature-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(79,142,247,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-accent);
}

.teaching-quote-wrap {
  display: flex;
  align-items: center;
}

.teaching-quote {
  border-left: 3px solid var(--clr-accent);
  padding-left: 1.5rem;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--clr-text);
  line-height: 1.6;
}
.teaching-quote cite {
  display: block;
  margin-top: 1rem;
  font-family: var(--font-sans);
  font-size: .85rem;
  font-style: normal;
  color: var(--clr-muted);
}

/* ===================================================
   EMT
=================================================== */
.emt-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: border-color var(--transition);
}
.stat-card:hover { border-color: rgba(79,142,247,.35); }

.stat-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: .25rem;
}

.stat-label {
  font-size: .8rem;
  color: var(--clr-muted);
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ===================================================
   Resume
=================================================== */
.resume-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.resume-group-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-muted);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* Timeline */
.timeline { position: relative; padding-left: 1.5rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 6px; bottom: 0;
  width: 1px;
  background: var(--clr-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-dot {
  position: absolute;
  left: -1.5rem;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--clr-accent);
  border-radius: 50%;
  transform: translateX(-4.5px);
}

.timeline-meta {
  font-size: .78rem;
  color: var(--clr-muted);
  margin-bottom: .2rem;
}

.timeline-role {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .15rem;
}

.timeline-org {
  font-size: .875rem;
  color: var(--clr-accent);
  margin-bottom: .4rem;
}

.timeline-desc {
  font-size: .875rem;
  color: var(--clr-muted);
  line-height: 1.6;
}

/* Skills */
.skills-list { display: flex; flex-direction: column; gap: 1rem; }

.skill-item {}

.skill-label {
  display: flex;
  justify-content: space-between;
  font-size: .875rem;
  margin-bottom: .35rem;
  color: var(--clr-text);
}

.skill-bar {
  height: 5px;
  background: var(--clr-border);
  border-radius: 999px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, var(--clr-accent), #7c5cbf);
  border-radius: 999px;
  animation: fillBar .8s ease forwards;
}

@keyframes fillBar {
  from { width: 0; }
  to   { width: var(--w); }
}

/* Education */
.edu-card {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: .75rem;
}

.edu-degree { font-weight: 600; font-size: .95rem; }
.edu-school { font-size: .85rem; color: var(--clr-accent); margin: .1rem 0; }
.edu-year   { font-size: .8rem; color: var(--clr-muted); }

.resume-download {
  text-align: center;
  margin-top: 3rem;
}

/* ===================================================
   Contact
=================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: start;
}

.contact-form { display: flex; flex-direction: column; gap: 1rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.form-group label {
  font-size: .85rem;
  font-weight: 500;
  color: var(--clr-muted);
}

.form-group input,
.form-group textarea {
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: .65rem .9rem;
  color: var(--clr-text);
  font-family: inherit;
  font-size: .95rem;
  outline: none;
  transition: border-color var(--transition);
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-muted); }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 260px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.contact-item:hover {
  border-color: rgba(79,142,247,.35);
  transform: translateX(4px);
}

.contact-item-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(79,142,247,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-accent);
}

.contact-item-label {
  font-size: .75rem;
  color: var(--clr-muted);
  margin-bottom: .1rem;
}
.contact-item-value {
  font-size: .9rem;
  font-weight: 500;
}

/* ===================================================
   Footer
=================================================== */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--clr-border);
  text-align: center;
  font-size: .85rem;
  color: var(--clr-muted);
}

/* ===================================================
   Responsive
=================================================== */
@media (max-width: 900px) {
  :root { --section-pad: 70px; }

  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about-photo-placeholder { margin-inline: auto; }
  .about-pills { justify-content: center; }

  .two-col,
  .two-col.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .resume-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .contact-grid { grid-template-columns: 1fr; }
  .contact-links { min-width: 0; }
}

@media (max-width: 640px) {
  :root { --section-pad: 56px; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(13,15,20,.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
    padding: 1rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: .8rem 1.5rem;
    font-size: 1rem;
  }
  .nav-toggle { display: flex; }
  .nav { background: rgba(13,15,20,.92); backdrop-filter: blur(12px); }

  .photo-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .photo-placeholder.tall,
  .photo-placeholder.wide { grid-row: auto; grid-column: auto; }

  .emt-stat-grid { grid-template-columns: 1fr 1fr; }

  .form-row { grid-template-columns: 1fr; }

  .hero-cta { flex-direction: column; align-items: center; }
}