/* styles.css – clean, dark, app-like theme */

/* ---------- Base ---------- */

:root {
  --bg: #020617;
  --bg-soft: #020617;
  --fg: #e5e7f0;
  --fg-strong: #f9fafb;
  --muted: #9ca3b9;
  --accent: #4ea8ff;
  --accent-soft: rgba(78, 168, 255, 0.18);
  --border-subtle: rgba(148, 163, 184, 0.5);
  --border-strong: rgba(148, 163, 184, 0.9);
  --card-bg: rgba(15, 23, 42, 0.98);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.9);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "San Francisco", "Helvetica Neue", Arial, sans-serif;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #0b1120 0, #020617 55%, #020617 100%);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

/* ---------- Layout ---------- */

.container {
  width: min(1040px, 100% - 2.5rem);
  margin: 0 auto;
}

.section {
  padding: 80px 0;
}

.section-alt {
  padding: 80px 0;
  background: var(--bg-soft);
  border-block: 1px solid rgba(15, 23, 42, 0.9);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.9),
    transparent
  );
  border-bottom: 1px solid rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--muted);
}

/* status dot */
.logo::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(78, 168, 255, 0.18);
}

/* nav links */

.nav-links a {
  position: relative;
  margin-left: 18px;
  font-size: 0.9rem;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 1px;
  background: transparent;
  transform-origin: center;
  transform: scaleX(0.4);
  transition: background 0.18s ease, transform 0.18s ease;
}

.nav-links a:hover {
  background: rgba(15, 23, 42, 0.7);
  color: var(--fg-strong);
}

.nav-links a:hover::after {
  background: rgba(148, 163, 184, 0.9);
  transform: scaleX(1);
}

/* ---------- Hero ---------- */

.hero {
  padding: 88px 0 52px;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 55%),
    radial-gradient(circle at top right, rgba(96, 165, 250, 0.18), transparent 50%),
    var(--bg);
}

.hero-content {
  display: flex;
  gap: 48px;
}

.hero-text {
  max-width: 680px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(2.3rem, 4.4vw, 3.1rem);
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  color: var(--fg-strong);
}

.hero h1 span {
  background: linear-gradient(120deg, #a5b4fc, #4ea8ff, #22c55e);
  -webkit-background-clip: text;
  color: transparent;
  background-clip: text;
}

.hero-subtitle {
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.84rem;
  color: var(--muted);
}

/* ---------- Buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease,
    transform 0.06s ease,
    box-shadow 0.18s ease;
}

.button.primary {
  background: linear-gradient(135deg, #4ea8ff, #6366f1);
  color: #0b1120;
  border-color: rgba(148, 163, 184, 0.7);
  box-shadow: 0 22px 55px rgba(15, 23, 42, 0.95);
}

.button.primary:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #60a5fa, #818cf8);
  border-color: rgba(203, 213, 225, 0.85);
}

.button.ghost {
  background: rgba(15, 23, 42, 0.85);
  border-color: rgba(148, 163, 184, 0.6);
  color: var(--fg-strong);
}

.button.ghost:hover {
  background: rgba(15, 23, 42, 0.98);
  border-color: rgba(226, 232, 240, 0.85);
}

/* ---------- Section headers ---------- */

.section-header {
  margin-bottom: 26px;
}

.section-header h2 {
  font-size: 1.4rem;
  margin: 0 0 4px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-header p {
  margin: 0;
  color: var(--fg);
  font-size: 0.92rem;
}

/* ---------- Projects ---------- */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  /* border: 1px solid var(--border-subtle); */
  padding: 18px 14px 16px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition:
    box-shadow 0.18s ease,
    border-color 0.18s ease,
    transform 0.08s ease;
}

.project-card:hover {
  box-shadow: var(--shadow-soft);
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.project-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 3px 10px;
  font-size: 0.72rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent);
}

.project-card h3 {
  font-size: 0.98rem;
  margin: 4px 0;
  letter-spacing: -0.01em;
  color: var(--fg-strong);
}

.project-summary {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.project-meta-list {
  margin: 8px 0 0;
  padding-left: 16px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.project-meta-list li + li {
  margin-top: 2px;
}

/* project image */

.project-image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 4px 0 10px;
}

.project-image {
  max-width: 180px;
  max-height: 120px;
  width: 100%;
  height: auto;
  object-fit: contain;
  /* border-radius: 18px;
  background: radial-gradient(circle at top, #0b1120 0, #020617 60%);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.65); */
}

/* toggle button */

.project-toggle {
  margin-top: 10px;
  align-self: flex-start;
  padding: 7px 13px;
  font-size: 0.82rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.65);
  background: rgba(15, 23, 42, 0.96);
  color: var(--fg-strong);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    transform 0.06s ease;
}

.project-toggle:hover {
  background: rgba(37, 99, 235, 0.18);
  border-color: rgba(148, 163, 184, 0.9);
  transform: translateY(-1px);
}

.project-caret {
  font-size: 0.7rem;
  opacity: 0.7;
}

/* selected card */

.project-card-active {
  border-color: var(--accent);
  box-shadow:
    0 0 0 1px rgba(78, 168, 255, 0.55),
    var(--shadow-soft);
}

/* ---------- Full-width case study ---------- */

.case-fullwidth {
  margin-top: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 23, 42, 0.9);
  background: linear-gradient(
    to bottom right,
    rgba(15, 23, 42, 0.98),
    rgba(2, 6, 23, 0.98)
  );
  padding: 0;
  overflow: hidden;
  transition:
    padding 0.18s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.case-fullwidth-open {
  padding: 18px 18px 16px;
  border-color: var(--border-strong);
  box-shadow: 0 26px 70px rgba(15, 23, 42, 0.96);
}

.case-fullwidth-inner {
  display: none;
}

.case-fullwidth-inner.case-active {
  display: block;
}

.case-fullwidth h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--fg-strong);
}

.case-fullwidth-summary {
  margin: 0 0 16px;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
}

.case-panel-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.1fr;
  gap: 24px;
  align-items: flex-start;
}

.case-panel-grid h4 {
  margin: 6px 0 4px;
  font-size: 0.9rem;
  color: var(--fg-strong);
}

.case-panel-grid p,
.case-panel-grid ul {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.6;
}

.case-panel-grid ul {
  margin: 4px 0 8px;
  padding-left: 18px;
}

.case-note {
  margin-top: 12px;
  font-size: 0.83rem;
  color: var(--muted);
  font-style: italic;
}

/* ---------- About ---------- */

.about-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
}

.about-layout h2 {
  margin-top: 0;
  font-size: 1.1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.about-layout p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.about-details {
  display: grid;
  gap: 20px;
}

.about-group {
  border-radius: 10px;
  /* border: 1px solid rgba(148, 163, 184, 0.6); 8? */
  padding: 12px 14px 10px;
  background: var(--card-bg);
}

.about-group h3 {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: var(--fg-strong);
}

.about-group ul {
  margin: 0;
  padding-left: 16px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* ---------- Logos ---------- */

.section-logos {
  background: var(--bg-soft);
  border-block: 1px solid rgba(15, 23, 42, 0.9);
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 32px;
  align-items: center;
}

.logo-item {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 14px 16px;
  /* border-radius: 16px;
  border: 1px solid rgba(15, 23, 42, 0.9); 
  background: #020617; */
}

/* .logo-image {
  max-width: 140px;
  max-height: 60px;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.9;
}*/

.logo-image {
    max-width: 140px;
    max-height: 60px;
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 1;
}

/* ---------- Contact ---------- */

.contact {
  text-align: center;
}

.contact h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 12px;
}

.contact-meta {
  font-size: 0.88rem;
  color: var(--muted);
}

.contact-meta a {
  color: var(--accent);
  text-decoration: none;
}

.contact-meta a:hover {
  text-decoration: underline;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid rgba(15, 23, 42, 0.9);
  padding: 18px 0 28px;
  margin-top: 20px;
  font-size: 0.78rem;
  color: var(--muted);
  background: #020617;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero-content {
    flex-direction: column;
  }

  .section,
  .section-alt {
    padding: 64px 0;
  }

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

  .about-layout {
    grid-template-columns: 1fr;
  }

  .case-panel-grid {
    grid-template-columns: 1fr;
  }

  .logo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-fullwidth-open {
    padding: 16px 14px 14px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  .container {
    width: min(100% - 1.75rem, 100%);
  }

  .section,
  .section-alt {
    padding: 52px 0;
  }

  .hero {
    padding-top: 64px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .contact-actions {
    flex-direction: column;
  }

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