@import url("tokens.css");

/* ============================================================
   TYPE
   ============================================================ */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}
.section-head { max-width: 640px; margin-bottom: 2.75rem; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-top: 0.6rem; }
.section-head p { color: var(--text-muted); margin-top: 0.85rem; font-size: 1.02rem; }

section { padding: clamp(3.5rem, 8vw, 6.5rem) 0; position: relative; }
.section-border-top { border-top: 1px solid var(--border-soft); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--glass-surface-strong);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo { font-family: var(--font-mono); font-size: 0.95rem; font-weight: 600; letter-spacing: -0.02em; display: flex; align-items: center; gap: 0.55rem; }
.nav-logo .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--live); box-shadow: 0 0 0 3px var(--live-tint); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { font-size: 0.9rem; color: var(--text-muted); transition: color 0.15s ease; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  font-size: 0.85rem; padding: 0.55rem 1.1rem; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.nav-cta:hover { border-color: var(--accent); background: var(--accent-tint); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; width: 40px; height: 40px; color: var(--text); }

@media (max-width: 820px) {
  .nav-links { position: fixed; inset: 68px 0 auto 0; background: var(--bg-elevated); border-bottom: 1px solid var(--border); flex-direction: column; align-items: flex-start; padding: 1.25rem clamp(1.25rem,4vw,2.5rem) 1.75rem; gap: 1.1rem; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: all 0.18s ease; }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-toggle { display: block; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero { padding-top: clamp(3.5rem, 9vw, 6rem); overflow: hidden; }
.hero-inner { position: relative; z-index: 1; max-width: 780px; }
.hero .eyebrow { margin-bottom: 1.4rem; }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 4.4rem); }
.hero .role {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  color: var(--accent); margin-top: 0.6rem;
}
.hero .statement { color: var(--text-muted); font-size: 1.08rem; max-width: 560px; margin-top: 1.4rem; }
.credibility-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  margin-top: 1.3rem;
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted);
}
.credibility-bar .sep { color: var(--text-faint); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.1rem; }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-body); font-weight: 600; font-size: 0.92rem;
  padding: 0.8rem 1.4rem; border-radius: 999px; border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #0a0d12; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); background: var(--accent-tint); }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.82rem; border-radius: 8px; }

/* ============================================================
   PER-PROJECT ACCENT
   Each case-study page sets --proj on <body> (see project pages).
   Falls back to the global --accent when unset (home page, etc.)
   ============================================================ */
:root { --proj: var(--accent); --proj-tint: var(--accent-tint); }
body.proj-inventiq    { --proj: #6e8bff; --proj-tint: rgba(110,139,255,0.12); }
body.proj-flowbase    { --proj: #2dd4bf; --proj-tint: rgba(45,212,191,0.12); }
body.proj-djangoforge { --proj: #c084fc; --proj-tint: rgba(192,132,252,0.12); }
body.proj-bilstm      { --proj: #22d3ee; --proj-tint: rgba(34,211,238,0.12); }

.cs-hero .card-cat { color: var(--proj); }
.cs-actions .btn-primary { background: var(--proj); }
.cs-actions .btn-primary:hover { filter: brightness(1.12); }
.cs-actions .btn-ghost:hover { border-color: var(--proj); background: var(--proj-tint); }

.hero-links { display: flex; gap: 1.4rem; margin-top: 2.6rem; }
.hero-links a { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-muted); display: inline-flex; align-items: center; gap: 0.4rem; border-bottom: 1px solid transparent; padding-bottom: 2px; }
.hero-links a:hover { color: var(--text); border-color: var(--border); }
.icon-link { display: inline-flex; align-items: center; justify-content: center; color: var(--text-muted); border-bottom: none !important; padding-bottom: 0 !important; transition: color 0.15s ease; }
.icon-link:hover { color: var(--accent); }
.footer-links .icon-link { margin: 0 -0.2rem; }

/* Live systems strip — signature element */
.status-strip {
  margin-top: 3.2rem;
  display: flex; flex-wrap: wrap; gap: 0.6rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--glass-surface);
  backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur));
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.status-strip strong { color: var(--text); font-weight: 500; }
.status-strip .pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--live); display: inline-block; margin-right: 0.55rem; box-shadow: 0 0 0 0 var(--live-tint); animation: pulse 2.4s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(52,211,153,0.45); }
  70% { box-shadow: 0 0 0 7px rgba(52,211,153,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}
.status-strip-row { display: flex; align-items: center; }
.status-sep { color: var(--border); margin: 0 0.9rem; }

/* ============================================================
   PROJECTS GRID — glass cards with scroll-reveal animation
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}
.project-card {
  grid-column: span 1;
  background: var(--glass-surface);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column;
  transition: border-color 0.18s ease, transform 0.35s cubic-bezier(.2,.7,.3,1), box-shadow 0.35s ease;
  opacity: 0; transform: translateY(22px);
}
.project-card.in-view { opacity: 1; transform: translateY(0); }
.project-card:hover { border-color: var(--card-accent, var(--accent-dim)); transform: translateY(-4px); box-shadow: var(--shadow-card), 0 0 32px -14px var(--card-accent, var(--accent)); }
.project-card.featured { grid-column: span 2; }
.project-card.featured .card-media { aspect-ratio: 21 / 9; }
@media (min-width: 821px) {
  .project-card.featured { display: grid; grid-template-columns: 1.15fr 1fr; }
  .project-card.featured .card-media { aspect-ratio: auto; height: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .project-card { opacity: 1; transform: none; transition: border-color 0.18s ease; }
  .project-card:hover { transform: none; }
}

.card-media { aspect-ratio: 16/10; overflow: hidden; background: #05070a; position: relative; }
.card-media img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.4s ease; }
.project-card:hover .card-media img { transform: scale(1.03); }
.card-live-badge {
  position: absolute; top: 0.85rem; left: 0.85rem;
  font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em;
  background: rgba(10,13,18,0.75); backdrop-filter: blur(6px);
  border: 1px solid rgba(52,211,153,0.35); color: var(--live);
  padding: 0.3rem 0.6rem; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.card-live-badge .pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--live); }

.card-body { padding: 1.6rem 1.7rem 1.8rem; display: flex; flex-direction: column; flex: 1; }
.card-cat { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--warm); }
.card-body h3 { font-size: 1.32rem; margin-top: 0.55rem; }
.card-body .desc { color: var(--text-muted); font-size: 0.95rem; margin-top: 0.7rem; flex: 1; }
.tag-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1.15rem; }
.tag {
  font-family: var(--font-mono); font-size: 0.72rem;
  border-radius: 999px; padding: 0.28rem 0.65rem;
  color: #6fe3a0;
  background: rgba(47,191,114,0.09);
  border: 1px solid rgba(47,191,114,0.4);
  box-shadow: 0 0 10px -3px rgba(47,191,114,0.45);
}

/* All technology/feature pills now follow one consistent green-glow system —
   no mixed hues. Kept as aliases so existing markup (tag--blue, tag--purple, etc.)
   still resolves to the same unified style. */
.tag--blue, .tag--green, .tag--teal, .tag--orange,
.tag--yellow, .tag--cyan, .tag--purple { color: #6fe3a0; border-color: rgba(47,191,114,0.4); background: rgba(47,191,114,0.09); box-shadow: 0 0 10px -3px rgba(47,191,114,0.45); }
.tag-secondary { opacity: 0.55; }
.card-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.4rem; }

.demo-login {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0.6rem;
  margin-top: 1.1rem; padding: 0.6rem 0.85rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02);
}
.demo-login-label { font-family: var(--font-mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); }
.demo-login-row { display: inline-flex; align-items: center; gap: 0.45rem; font-family: var(--font-mono); font-size: 0.78rem; }
.demo-login-row code { color: var(--card-accent, var(--accent)); background: none; }
.demo-sep { color: var(--text-faint); }
.cs-section .demo-login-row code { color: var(--proj); }

@media (max-width: 820px) {
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; }
}
@media (max-width: 480px) {
  .card-body { padding: 1.25rem 1.25rem 1.4rem; }
  .card-body .desc { font-size: 0.9rem; }
  .demo-login { margin-top: 0.9rem; padding: 0.5rem 0.7rem; }
  .card-actions { margin-top: 1.1rem; gap: 0.5rem; }
  .card-actions .btn-sm { padding: 0.5rem 0.85rem; font-size: 0.78rem; }
  .card-media { aspect-ratio: 16/9; }
  .project-card.featured .card-media { aspect-ratio: 16/9; }

  /* Tags become a single-line, swipeable strip instead of stacking one
     per row — the standard compact mobile chip pattern. A fade + tiny
     hint signal there's more to scroll. */
  .project-card .tag-row {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 0.4rem;
    margin-top: 0.9rem;
    padding-bottom: 2px;
    -webkit-mask-image: linear-gradient(to right, black calc(100% - 22px), transparent 100%);
    mask-image: linear-gradient(to right, black calc(100% - 22px), transparent 100%);
  }
  .project-card .tag-row::-webkit-scrollbar { display: none; }
  .project-card .tag-row .tag {
    flex: 0 0 auto;
    white-space: nowrap;
    font-size: 0.68rem;
    padding: 0.22rem 0.6rem;
  }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.about-copy p { color: var(--text-muted); font-size: 1.04rem; margin-bottom: 1.1rem; }
.about-copy p:last-child { margin-bottom: 0; }
.about-copy strong { color: var(--text); font-weight: 600; }
.fact-list { display: flex; flex-direction: column; gap: 1.1rem; }
.fact-list .fact { border-top: 1px solid var(--border-soft); padding-top: 1.1rem; }
.fact-list .fact .k { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); }
.fact-list .fact .v { margin-top: 0.35rem; font-size: 0.98rem; }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; } }

/* ============================================================
   EXPERIENCE (timeline)
   ============================================================ */
.timeline { display: flex; flex-direction: column; }
.tl-item { display: grid; grid-template-columns: 150px 1fr; gap: clamp(1.2rem, 3vw, 2.5rem); padding: 2rem 0; border-top: 1px solid var(--border-soft); }
.tl-item:first-child { border-top: none; }
.tl-period { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-faint); padding-top: 0.2rem; }
.tl-role { font-size: 1.18rem; font-family: var(--font-display); font-weight: 600; }
.tl-org { color: var(--accent); font-size: 0.95rem; margin-top: 0.3rem; }
.tl-desc { color: var(--text-muted); margin-top: 0.9rem; font-size: 0.98rem; max-width: 640px; }
.tl-desc ul { margin: 0.6rem 0 0; padding-left: 1.1rem; }
.tl-desc li { margin-bottom: 0.4rem; }
@media (max-width: 620px) { .tl-item { grid-template-columns: 1fr; gap: 0.5rem; } }

/* ============================================================
   SKILLS
   ============================================================ */
.skills-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; }
.skill-card { background: var(--glass-surface); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 1.4rem 1.4rem 1.5rem; }
.skill-card h4 { font-size: 0.98rem; }
.skill-card .tag-row { margin-top: 1rem; }
@media (max-width: 980px) { .skills-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .skills-grid { grid-template-columns: 1fr; } }

/* ============================================================
   RESEARCH
   ============================================================ */
.research-row { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.research-pill {
  font-family: var(--font-mono); font-size: 0.85rem;
  border-radius: 999px;
  padding: 0.6rem 1.1rem;
  color: #6fe3a0;
  background: rgba(47,191,114,0.09);
  border: 1px solid rgba(47,191,114,0.4);
  box-shadow: 0 0 10px -3px rgba(47,191,114,0.45);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); }
.contact-list { display: flex; flex-direction: column; gap: 1rem; }
.contact-row {
  display: flex; align-items: center; justify-content: space-between;
  border: 1px solid var(--glass-border); border-radius: var(--radius);
  padding: 1.1rem 1.3rem; background: var(--glass-surface);
  backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: border-color 0.15s ease;
}
.contact-row:hover { border-color: var(--accent-dim); }
.contact-row .k { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); }
.contact-row .v { font-size: 1.02rem; margin-top: 0.25rem; }
.contact-row .arrow { color: var(--text-faint); font-size: 1.1rem; }

.form { display: flex; flex-direction: column; gap: 1rem; }
.field label { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); display: block; margin-bottom: 0.5rem; }
.field input, .field textarea {
  width: 100%; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.85rem 1rem; color: var(--text);
  font-family: var(--font-body); font-size: 0.95rem;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--accent); outline: none; }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

/* ============================================================
   FOOTER
   ============================================================ */
footer { border-top: 1px solid var(--border-soft); padding: 2.4rem 0; }
.footer-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-row .fname { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 1.4rem; }
.footer-links a { font-size: 0.85rem; color: var(--text-muted); }
.footer-links a:hover { color: var(--text); }

/* ============================================================
   CASE STUDY PAGES
   ============================================================ */
.cs-hero { padding-top: clamp(2.8rem, 7vw, 4.5rem); }
.cs-back { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-muted); display: inline-flex; align-items: center; gap: 0.4rem; }
.cs-back:hover { color: var(--text); }
.cs-title-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1.5rem; margin-top: 1.6rem; }
.cs-title-row h1 { font-size: clamp(2.1rem, 5vw, 3.1rem); }
.cs-meta { color: var(--text-muted); margin-top: 0.7rem; max-width: 620px; }
.cs-actions { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.cs-hero-media { margin-top: 2.4rem; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-soft); box-shadow: var(--shadow-card); }

.cs-body { display: grid; grid-template-columns: 200px 1fr; gap: clamp(2rem, 5vw, 4rem); margin-top: 3.5rem; align-items: start; }
.cs-toc { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 0.7rem; }
.cs-toc a { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); border-left: 2px solid var(--border); padding-left: 0.8rem; transition: color 0.15s ease, border-color 0.15s ease; }
.cs-toc a:hover { color: var(--text-muted); border-left-color: var(--proj); }
.cs-toc a.active { color: var(--proj); border-left-color: var(--proj); }

.cs-section { padding: 0 0 3rem; border-bottom: 1px solid var(--border-soft); margin-bottom: 3rem; }
.cs-section:last-child { border-bottom: none; }
.cs-section h2 { font-size: 1.5rem; margin-bottom: 1.1rem; }
.cs-section p { color: var(--text-muted); font-size: 1rem; margin-bottom: 1rem; }
.cs-section p:last-child { margin-bottom: 0; }
.cs-section ul { color: var(--text-muted); padding-left: 1.2rem; }
.cs-section li { margin-bottom: 0.6rem; }
.cs-section li strong { color: var(--text); }

.cs-shot { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-soft); margin: 1.4rem 0; }
.cs-shot figcaption { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-faint); padding: 0.7rem 0.2rem 0; }
.shot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 700px) { .shot-grid { grid-template-columns: 1fr; } }

.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.9rem; margin: 1.4rem 0; }
.metric-card { background: var(--glass-surface); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 1.1rem 1.2rem; }
.metric-card .num { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; }
.metric-card .lbl { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin-top: 0.4rem; }
@media (max-width: 700px) { .metric-grid { grid-template-columns: repeat(2, 1fr); } }

.arch-diagram { display: flex; flex-direction: column; align-items: center; gap: 0; margin: 1.6rem 0; }
.arch-step {
  width: 100%; max-width: 440px;
  background: var(--glass-surface); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--proj); border-radius: var(--radius);
  padding: 0.9rem 1.2rem; text-align: center;
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--text);
  box-shadow: 0 0 18px -9px var(--proj);
}
.arch-arrow { color: var(--text-faint); font-size: 1.15rem; line-height: 1; margin: 0.3rem 0; }

.stack-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }
/* Case-study Technology Stack pills use that page's own project accent
   (set via body.proj-*), instead of the uniform green used on the homepage. */
.stack-row .tag {
  color: var(--proj);
  border-color: color-mix(in srgb, var(--proj) 45%, transparent);
  background: color-mix(in srgb, var(--proj) 12%, transparent);
  box-shadow: 0 0 10px -3px color-mix(in srgb, var(--proj) 45%, transparent);
}

.note-box {
  border: 1px solid var(--warm); background: var(--warm-tint);
  border-radius: var(--radius); padding: 1rem 1.2rem; font-size: 0.92rem; color: var(--text);
}

@media (max-width: 900px) {
  .cs-body { grid-template-columns: 1fr; }
  .cs-toc { position: static; flex-direction: row; flex-wrap: wrap; }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }