/* ─────────────────────────────────────────────
   Zavala Tech Consulting — stylesheet
   Design: dark-navy hero, clean white sections,
   teal accent. No external dependencies.
───────────────────────────────────────────── */

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

:root {
  --navy:       #0d1117;
  --navy-mid:   #161b22;
  --navy-card:  #1c2330;
  --teal:       #2dd4bf;
  --teal-dark:  #0f9d8a;
  --white:      #f0f6fc;
  --muted:      #8b949e;
  --border:     #30363d;
  --text:       #e6edf3;
  --section-bg: #f6f8fa;
  --section-text: #1c2330;
  --card-shadow: 0 2px 16px rgba(0,0,0,.18);
  --radius:     8px;
  --max-w:      1100px;
  --nav-h:      64px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(13,17,23,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -.01em;
}
.nav-brand span { color: var(--teal); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--white); text-decoration: none; }

.nav-cta {
  background: var(--teal);
  color: var(--navy) !important;
  padding: .4rem 1rem;
  border-radius: 6px;
  font-weight: 600 !important;
  font-size: .85rem !important;
  transition: background .2s !important;
}
.nav-cta:hover { background: var(--teal-dark) !important; }

/* hamburger — mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: .25rem;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--muted);
  border-radius: 2px;
  transition: .2s;
}

/* ── Hero ── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 4rem) 1.5rem 4rem;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(45,212,191,.08) 0%, transparent 70%),
    var(--navy);
  position: relative;
  overflow: hidden;
}

.hero-eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(45,212,191,.08);
  border: 1px solid rgba(45,212,191,.25);
  padding: .3rem .85rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

#hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--white);
  max-width: 780px;
  margin-bottom: 1.25rem;
}
#hero h1 em {
  font-style: normal;
  color: var(--teal);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

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

.btn {
  display: inline-block;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  transition: all .2s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--teal);
  color: var(--navy);
}
.btn-primary:hover {
  background: var(--teal-dark);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--teal);
  color: var(--teal);
  text-decoration: none;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 4rem;
  flex-wrap: wrap;
  justify-content: center;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}
.stat-label {
  font-size: .8rem;
  color: var(--muted);
  margin-top: .25rem;
  letter-spacing: .04em;
}

/* ── Section shared ── */
section { padding: 5rem 0; }

.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: .75rem;
}

.section-heading {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ── Services ── */
#services {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.services-header { margin-bottom: 3rem; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--navy-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color .2s, transform .2s;
}
.service-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(45,212,191,.08);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .6rem;
}

.service-card p {
  font-size: .9rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ── About ── */
#about { background: var(--navy); }

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

.about-content .section-heading { color: var(--white); }

.about-content p {
  color: var(--muted);
  margin-bottom: 1rem;
  line-height: 1.75;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.5rem;
}
.tag {
  font-size: .78rem;
  font-weight: 600;
  background: rgba(45,212,191,.08);
  color: var(--teal);
  border: 1px solid rgba(45,212,191,.2);
  padding: .3rem .75rem;
  border-radius: 999px;
}

.about-card {
  background: var(--navy-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}
.about-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.credential-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .9rem;
}
.credential-list li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .9rem;
  color: var(--muted);
}
.credential-list li::before {
  content: '✓';
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .05rem;
}

/* ── Portfolio ── */
#portfolio {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.portfolio-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.portfolio-card {
  background: var(--navy-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.portfolio-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(45,212,191,.08);
}

.portfolio-card-img {
  height: 180px;
  background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy-card) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  border-bottom: 1px solid var(--border);
}

.portfolio-card-body { padding: 1.5rem; }

.portfolio-tag {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: .5rem;
  display: block;
}

.portfolio-card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: .5rem;
}

.portfolio-card-body p {
  font-size: .875rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Contact ── */
#contact { background: var(--navy); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h2 { color: var(--white); margin-bottom: 1rem; }
.contact-info p { color: var(--muted); line-height: 1.75; margin-bottom: 2rem; }

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-method {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .9rem;
  color: var(--muted);
}
.contact-method-icon {
  width: 36px; height: 36px;
  background: var(--navy-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* Form */
.contact-form {
  background: var(--navy-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: .4rem;
  letter-spacing: .03em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: .95rem;
  padding: .65rem .9rem;
  font-family: inherit;
  transition: border-color .2s;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--teal);
}
.form-group textarea { min-height: 120px; resize: vertical; }

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

.form-submit {
  width: 100%;
  padding: .85rem;
  font-size: 1rem;
  margin-top: .5rem;
}

/* ── Footer ── */
footer {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand {
  font-weight: 700;
  color: var(--white);
  font-size: .95rem;
}
.footer-brand span { color: var(--teal); }
.footer-copy { font-size: .82rem; color: var(--muted); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: .82rem; color: var(--muted); transition: color .2s; }
.footer-links a:hover { color: var(--white); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; gap: 0; }
  .nav-links.open {
    display: flex;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--navy-mid);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    gap: .25rem;
  }
  .nav-links.open a { padding: .65rem 0; display: block; }
  .nav-toggle { display: flex; }

  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }

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

  .portfolio-header { flex-direction: column; align-items: flex-start; }

  .hero-stats { gap: 2rem; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

/* Form feedback messages */
.form-msg {
  margin-top: .75rem;
  font-size: .875rem;
  min-height: 1.2em;
}
.form-msg.success { color: #2dd4bf; }
.form-msg.error   { color: #f87171; }

/* Active nav link */
.nav-links a.active { color: #f0f6fc; }

/* ── Formspree SDK styles ── */

/* Success banner */
.fs-success {
  display: none; /* SDK shows it after submit */
  background: rgba(45,212,191,.1);
  border: 1px solid rgba(45,212,191,.35);
  color: var(--teal);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  font-size: .95rem;
  font-weight: 500;
}
/* Formspree removes [hidden] when succeeded */
.fs-success:not([hidden]) { display: block; }

/* Form-level error */
.fs-form-error {
  display: none;
  background: rgba(248,113,113,.08);
  border: 1px solid rgba(248,113,113,.3);
  color: #f87171;
  border-radius: var(--radius);
  padding: .75rem 1rem;
  margin-bottom: 1rem;
  font-size: .875rem;
}
.fs-form-error:not(:empty) { display: block; }

/* Field-level error messages */
.fs-field-error {
  display: block;
  color: #f87171;
  font-size: .78rem;
  margin-top: .3rem;
  min-height: 1em;
}

/* Red border on invalid fields (set by SDK via aria-invalid) */
.form-group input[aria-invalid="true"],
.form-group select[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: #f87171;
}

/* Disabled state on submit button during submission */
button[data-fs-submit-btn]:disabled {
  opacity: .6;
  cursor: not-allowed;
}

/* Scroll reveal — elements start invisible, JS adds .visible */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
/* Stagger children inside a reveal parent */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .45s ease, transform .45s ease;
}
.reveal-stagger.visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: .05s; }
.reveal-stagger.visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: .15s; }
.reveal-stagger.visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: .25s; }
.reveal-stagger.visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: .35s; }
.reveal-stagger.visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: .42s; }
.reveal-stagger.visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: .48s; }