/* ============================================================
   BATCHEE.COM — PORTFOLIO LANDING PAGE
   Stylesheet: web/css/styles.css
   ============================================================ */

/* ── 1. DESIGN TOKENS ──────────────────────────────────────── */
:root {
  --color-navy:       #1B2B4B;
  --color-navy-dark:  #111D33;
  --color-blue:       #2563EB;
  --color-blue-light: #3B82F6;
  --color-blue-hover: #1D4ED8;
  --color-slate:      #475569;
  --color-slate-light:#94A3B8;
  --color-bg:         #FFFFFF;
  --color-surface:    #F8FAFC;
  --color-border:     #E2E8F0;
  --color-tag-bg:     #EFF6FF;
  --color-tag-text:   #1D4ED8;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-pill:9999px;

  --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md:  0 4px 16px rgba(0, 0, 0, 0.10);
  --shadow-lg:  0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-card:0 2px 8px rgba(27, 43, 75, 0.06);

  --transition: 0.2s ease;

  --container-max: 1200px;
  --container-pad: clamp(1rem, 4vw, 2rem);

  --nav-height: 64px;
}

/* ── 2. RESET + BASE ────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-slate);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

/* ── 3. TYPOGRAPHY ──────────────────────────────────────────── */
h1, h2, h3, h4 {
  color: var(--color-navy);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ── 4. LAYOUT UTILITIES ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--color-slate);
  font-size: 1.05rem;
  max-width: 540px;
  margin-bottom: 2.5rem;
}

section {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

/* ── 5. BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-blue);
  color: #fff;
  border-color: var(--color-blue);
}
.btn--primary:hover {
  background: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-navy);
  background: var(--color-surface);
  transform: translateY(-1px);
}

/* ── 6. NAVBAR ──────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-navy);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition);
}

.navbar--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar__wordmark {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  text-decoration: none;
  flex-shrink: 0;
}
.navbar__wordmark span {
  color: var(--color-blue-light);
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar__nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}
.navbar__nav a:hover {
  color: #fff;
}

.navbar__cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar__cta .btn {
  padding: 0.5rem 1.1rem;
  font-size: 0.875rem;
}
.navbar__cta .btn--primary {
  background: var(--color-blue);
  border-color: var(--color-blue);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  cursor: pointer;
}
.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 2px;
  transition: all var(--transition);
}
.navbar__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── 7. HERO ────────────────────────────────────────────────── */
.hero {
  background: var(--color-surface);
  padding: clamp(4rem, 10vw, 7rem) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  max-width: 680px;
  position: relative;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-blue);
  background: var(--color-tag-bg);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(37, 99, 235, 0.2);
  margin-bottom: 1.25rem;
}

.hero__headline {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-slate);
  line-height: 1.65;
  max-width: 520px;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero__stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1;
  letter-spacing: -0.03em;
}
.hero__stat-label {
  font-size: 0.8rem;
  color: var(--color-slate-light);
  margin-top: 0.25rem;
  font-weight: 500;
}

/* ── 8. WHAT WE BUILD (CATEGORIES) ─────────────────────────── */
.categories {
  background: var(--color-bg);
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem 1.75rem;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.category-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-blue);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.category-card:hover::after,
.category-card:focus-visible::after {
  transform: scaleX(1);
}
.category-card:hover,
.category-card:focus-visible {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  outline: none;
}

.category-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-tag-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-blue);
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-navy);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--color-slate);
  line-height: 1.6;
}

.category-card__arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-blue);
  margin-top: 1rem;
  transition: gap var(--transition);
}
.category-card:hover .category-card__arrow {
  gap: 0.5rem;
}

/* ── 9. PORTFOLIO ───────────────────────────────────────────── */
.portfolio {
  background: var(--color-surface);
}

.portfolio__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-btn {
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  color: var(--color-slate);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover {
  border-color: var(--color-blue-light);
  color: var(--color-blue);
}
.filter-btn--active {
  background: var(--color-blue);
  border-color: var(--color-blue);
  color: #fff;
}
.filter-btn--active:hover {
  background: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
  color: #fff;
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--shadow-card);
}
.project-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.2);
}

.project-card--hidden {
  display: none;
}

.project-card__header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1rem;
}

.project-card__initial {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-navy);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: -0.02em;
}

.project-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.project-card__category {
  font-size: 0.75rem;
  color: var(--color-slate-light);
  font-weight: 500;
  margin-top: 0.15rem;
}

.project-card__description {
  font-size: 0.9rem;
  color: var(--color-slate);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  letter-spacing: 0.01em;
}

.tag--prototype {
  background: #FFF7ED;
  color: #C2410C;
}

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

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}

.card-link--primary {
  background: var(--color-blue);
  color: #fff;
  border-color: var(--color-blue);
}
.card-link--primary:hover {
  background: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
}

.card-link--secondary {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-border);
}
.card-link--secondary:hover {
  border-color: var(--color-navy);
  background: var(--color-surface);
}

/* ── 10. ABOUT ──────────────────────────────────────────────── */
.about {
  background: var(--color-bg);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  max-width: 720px;
}

.about__text p {
  color: var(--color-slate);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1rem;
}
.about__text p:last-child {
  margin-bottom: 0;
}

.about__text strong {
  color: var(--color-navy);
}

/* ── 11. CONTACT ────────────────────────────────────────────── */
.contact {
  background: var(--color-navy);
}

.contact .section-title {
  color: #fff;
}
.contact .section-subtitle {
  color: rgba(255, 255, 255, 0.65);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-decoration: none;
  transition: all var(--transition);
}
.contact-card:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.contact-card__icon {
  width: 40px;
  height: 40px;
  background: rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue-light);
  margin-bottom: 0.25rem;
}

.contact-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.contact-card__value {
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  word-break: break-all;
}

/* ── 12. FOOTER ─────────────────────────────────────────────── */
.footer {
  background: var(--color-navy-dark);
  padding: 1.5rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer__wordmark {
  font-size: 1rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: -0.03em;
}
.footer__wordmark span {
  color: var(--color-blue-light);
}

.footer__copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ── 13. RESPONSIVE ─────────────────────────────────────────── */

/* Mobile: < 640px */
@media (max-width: 639px) {
  .navbar__nav {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-navy-dark);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-lg);
  }
  .navbar__nav--open {
    display: flex;
  }
  .navbar__nav a {
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .navbar__cta {
    display: none;
  }
  .navbar__hamburger {
    display: flex;
  }

  .hero__actions {
    flex-direction: column;
  }
  .hero__actions .btn {
    justify-content: center;
  }

  .portfolio__grid {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* Tablet: 640px–1023px */
@media (min-width: 640px) and (max-width: 1023px) {
  .portfolio__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── 14. REDUCED MOTION ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}