/* ============================================================
   AARTUX — LAYOUT (layout.css)
   Navigation, hero, sections, grids, footer.
   ============================================================ */

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.25rem var(--s-page);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

.nav.scrolled {
  border-bottom-color: var(--c-border);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
}

.nav-logo span {
  color: var(--c-accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: var(--f-small);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  position: relative;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0;
  height: 1.5px;
  background: var(--c-accent);
  transition: width 0.4s var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--c-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 201;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--c-text);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 149;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 70%;
    max-width: 320px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--c-bg);
    transition: right 0.5s var(--ease);
    z-index: 200;
    border-left: 1px solid var(--c-border);
  }

  .nav-links.open { right: 0; }
  .nav-links a    { font-size: 1.25rem; }
}


/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--s-gap);
}

.hero h1 {
  font-size: var(--f-h1);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-style: normal;
  color: var(--c-accent);
  display: inline-block;
}

.hero-sub {
  margin-top: 1.5rem;
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.25rem);
  color: var(--c-text-dim);
  max-width: 520px;
  line-height: 1.8;
}

.hero-cta {
  margin-top: 2.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid  { grid-template-columns: 1fr; text-align: center; }
  .hero-sub   { margin-left: auto; margin-right: auto; }
  .hero-cta   { justify-content: center; }
  .hero-visual{ margin-top: 3rem; }
}


/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-gap);
  align-items: start;
}

.about-text p {
  color: var(--c-text-dim);
  margin-bottom: 1.25rem;
}

.about-text p:first-of-type {
  color: var(--c-text);
  font-size: 1.1em;
}

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

@media (max-width: 900px) { .about-grid   { grid-template-columns: 1fr; } .about-values { margin-top: 2rem; } }
@media (max-width: 500px) { .about-values { grid-template-columns: 1fr; } }


/* ── Works grid ── */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) { .works-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 550px) { .works-grid { grid-template-columns: 1fr; } }


/* ── Expertise ── */
.expertise-list {
  max-width: 900px;
}

.expertise-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--c-border);
  cursor: default;
  transition: padding-left 0.4s var(--ease);
}

.expertise-item:hover {
  padding-left: 1rem;
}

.expertise-item h3 {
  font-size: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  font-weight: 600;
}

.expertise-item p {
  font-size: var(--f-small);
  color: var(--c-text-dim);
  max-width: 400px;
  text-align: right;
}

.expertise-num {
  font-size: var(--f-small);
  font-weight: 700;
  color: var(--c-accent);
  margin-right: 1.5rem;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 700px) {
  .expertise-item { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .expertise-item p { text-align: left; max-width: 100%; }
}


/* ── Marquee ── */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: 1.5rem 0;
}

.marquee-inner {
  display: flex;
  gap: 3rem;
  width: max-content;
}

.marquee-inner span {
  font-size: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--c-text-dim);
}

.marquee-inner span .dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--c-accent);
  border-radius: 50%;
  margin: 0 1.5rem;
  vertical-align: middle;
}


/* ── Contact ── */
.contact {
  text-align: center;
}

.contact .section-title {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
  text-align: left;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.contact-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.contact-link-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-dim);
  transition: color 0.3s, padding-left 0.3s var(--ease);
  cursor: pointer;
}

.contact-link-item:hover {
  color: var(--c-text);
  padding-left: 0.5rem;
}

.contact-link-item svg { flex-shrink: 0; }
.contact-link-item span{ font-size: var(--f-small); font-weight: 500; }

.contact-socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-dim);
  transition: border-color 0.3s, color 0.3s, transform 0.3s var(--ease);
  cursor: pointer;
}

.social-btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-2px);
}

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row     { display: flex; gap: 1rem; }
.form-group   { flex: 1; display: flex; flex-direction: column; gap: 0.4rem; }

.form-group label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--c-bg);
  border: 1.5px solid var(--c-border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  color: var(--c-text);
  font-family: var(--f-family);
  font-size: var(--f-small);
  outline: none;
  transition: border-color 0.3s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--c-accent);
}

.form-group select option { background: var(--c-bg); color: var(--c-text); }
.form-group textarea      { min-height: 120px; }
.form-submit              { margin-top: 0.5rem; align-self: flex-start; }

@media (max-width: 700px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form-row     { flex-direction: column; }
}


/* ── Footer ── */
footer {
  border-top: 1px solid var(--c-border);
  padding: 2rem var(--s-page);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: var(--f-small);
  color: var(--c-text-dim);
}

footer a {
  transition: color 0.3s;
}

footer a:hover {
  color: var(--c-accent);
}