/* ============================================================
   PROJECT PAGE — Shared Styles
   Used by: aegis.html, yield.html, food.html
============================================================ */

/* NAV overrides for project pages */
.nav-back {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--dim);
  transition: color 0.2s;
}
.nav-back:hover { color: var(--text); }

/* ============================================================
   PROJECT HERO
============================================================ */
.proj-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 140px 10vw 80px;
  overflow: hidden;
  z-index: 1;
}
.proj-hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.proj-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 800px;
  min-width: 0;
}
.proj-hero-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 20px;
}
.proj-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent-clr, var(--cyan));
  letter-spacing: 0.1em;
}
.proj-year {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--dim);
}
.proj-hero-title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 24px;
}
.proj-hero-sub {
  font-size: 1.05rem;
  color: var(--dim);
  line-height: 1.75;
  max-width: 620px;
  margin-bottom: 40px;
}

/* Metrics strip */
.proj-hero-metrics {
  display: flex;
  gap: 0;
  margin-bottom: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  width: fit-content;
}
.hm-card {
  padding: 18px 28px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: rgba(255,255,255,0.02);
}
.hm-card:last-child { border-right: none; }
.hm-val {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}
.hm-lbl {
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--dim);
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.proj-hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   MAIN CONTENT
============================================================ */
.proj-main {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 48px 120px;
}

.proj-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.proj-section:last-child { border-bottom: none; }

.ps-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}
.ps-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 48px;
}

/* ============================================================
   OVERVIEW GRID
============================================================ */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}
.overview-text p {
  color: var(--dim);
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 20px;
}
.overview-text p strong { color: var(--text); }
.overview-text p:last-child { margin-bottom: 0; }

.overview-text ul {
  list-style: none;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.overview-text li {
  font-size: 0.92rem;
  color: var(--dim);
  display: flex;
  gap: 12px;
  line-height: 1.6;
}
.overview-text li::before {
  content: "→";
  color: var(--cyan);
  font-family: var(--mono);
  font-weight: 700;
}
.overview-text li strong { color: var(--text); }

.tech-stack-card {
  background: var(--bg2);
  border: 1px solid rgba(0,229,255,0.12);
  border-radius: 16px;
  padding: 28px;
}
.tech-stack-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dim);
  font-family: var(--mono);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.ts-items { display: flex; flex-direction: column; gap: 12px; }
.ts-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text);
}
.ts-icon { font-size: 1rem; width: 22px; flex-shrink: 0; }

/* ============================================================
   ARCHITECTURE DIAGRAM
============================================================ */
.arch-diagram {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.arch-row {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 16px 0;
}

.arch-node {
  background: var(--bg2);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 18px 20px;
  min-width: 140px;
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}
.arch-node:hover {
  border-color: var(--node-clr, rgba(0,229,255,0.4));
  transform: translateY(-3px);
}
.arch-node::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.03), transparent 70%);
}
.input-node  { border-color: rgba(255,255,255,0.06); }
.output-node { border-left: 3px solid var(--node-clr, var(--green)); }

.an-icon  { font-size: 1.4rem; margin-bottom: 8px; }
.an-title { font-size: 0.82rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.an-sub   { font-family: var(--mono); font-size: 0.58rem; color: var(--dim); line-height: 1.5; }

.arch-arrow {
  font-size: 1.2rem;
  color: var(--dim);
  flex-shrink: 0;
  opacity: 0.6;
}

/* Orchestrator strip */
.arch-orchestrator {
  display: flex;
  align-items: center;
  gap: 16px;
}
.ao-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,0.2), transparent);
}
.ao-node {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  background: rgba(0,229,255,0.06);
  border: 1px solid rgba(0,229,255,0.2);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--cyan);
  white-space: nowrap;
}
.ao-pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse-status 1.5s infinite;
}

/* Infra row */
.arch-infra {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.ai-box {
  flex: 1;
  min-width: 140px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}
.ai-sub {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--dim);
}

/* Secondary arch section */
.arch-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.as-box {
  display: flex;
  gap: 16px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.as-icon { font-size: 1.4rem; flex-shrink: 0; }
.as-box strong { display: block; font-size: 0.9rem; margin-bottom: 8px; color: var(--text); }
.as-box p { font-size: 0.82rem; color: var(--dim); line-height: 1.6; }

/* ============================================================
   HOW IT WORKS — FLOW STEPS
============================================================ */
.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 1px solid var(--border);
  padding-left: 32px;
}
.flow-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.flow-step::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 40px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--dim);
}
.flow-step:last-child { border-bottom: none; }

.fs-num {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  border: 1px solid rgba(0,229,255,0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  flex-shrink: 0;
}
.fs-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.fs-content p {
  font-size: 0.9rem;
  color: var(--dim);
  line-height: 1.75;
  margin-bottom: 12px;
}
.code-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--cyan);
  background: rgba(0,229,255,0.07);
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: 6px;
  padding: 6px 12px;
}

/* ============================================================
   CHALLENGES & SOLUTIONS
============================================================ */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.challenge-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.challenge-card:hover {
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}
.cc-problem, .cc-solution {
  padding: 24px;
}
.cc-problem {
  border-bottom: 1px solid var(--border);
}
.cc-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
}
.cc-badge.problem {
  background: rgba(239,68,68,0.1);
  color: #ef4444;
  border: 1px solid rgba(239,68,68,0.25);
}
.cc-badge.solution {
  background: rgba(16,185,129,0.1);
  color: #10b981;
  border: 1px solid rgba(16,185,129,0.25);
}
.cc-problem h3, .cc-solution h3 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.cc-problem p, .cc-solution p {
  font-size: 0.84rem;
  color: var(--dim);
  line-height: 1.7;
}
.cc-solution p strong { color: var(--text); }

/* ============================================================
   NEXT STEPS
============================================================ */
.proj-next .ps-title { margin-bottom: 32px; }
.next-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.next-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.next-icon { font-size: 1.3rem; flex-shrink: 0; }
.next-item p { font-size: 0.88rem; color: var(--dim); line-height: 1.6; }

/* ============================================================
   EVIDENCE TABLES & FIGURES
============================================================ */
.evidence-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.evidence-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}
.evidence-table th,
.evidence-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.evidence-table th {
  color: var(--dim);
  background: var(--bg2);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.evidence-table td {
  color: var(--dim);
  font-size: 0.84rem;
  line-height: 1.6;
}
.evidence-table td:first-child {
  color: var(--text);
  font-weight: 600;
}
.evidence-table tbody tr:last-child td { border-bottom: 0; }

.project-figure {
  margin: 0 0 32px;
}
.ps-intro {
  max-width: 780px;
  margin: -6px 0 28px;
  color: var(--dim);
  font-size: 0.94rem;
  line-height: 1.8;
}
.project-figure-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 24px;
}
.project-figure-grid .project-figure {
  min-width: 0;
  margin-bottom: 0;
}
.project-figure img {
  display: block;
  width: 100%;
  max-height: 620px;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}
.project-figure figcaption {
  margin-top: 10px;
  color: var(--dim);
  font-size: 0.78rem;
  line-height: 1.6;
}

/* ============================================================
   FOOTER
============================================================ */
.proj-footer {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.8rem;
}
.footer-back {
  color: var(--dim);
  transition: color 0.2s;
}
.footer-back:hover { color: var(--text); }
.proj-footer-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dim);
}
.proj-footer-nav a {
  color: var(--cyan);
  transition: opacity 0.2s;
}
.proj-footer-nav a:hover { opacity: 0.75; }

/* ============================================================
   RESPONSIVE — Tablet (≤900px)
============================================================ */
@media (max-width: 900px) {
  .proj-hero { padding: 120px 28px 60px; }
  .proj-main { padding: 0 28px 80px; }
  .proj-section { padding: 60px 0; }
  .ps-title { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 36px; }

  .overview-grid { grid-template-columns: 1fr; gap: 32px; }
  .arch-secondary { grid-template-columns: 1fr; gap: 16px; }
  .next-grid { grid-template-columns: 1fr; }

  /* Architecture row: allow horizontal scroll on tablet */
  .arch-row {
    overflow-x: auto;
    padding-bottom: 12px;
    -webkit-overflow-scrolling: touch;
  }

  /* Challenges */
  .challenges-grid { grid-template-columns: 1fr; }

  /* Metrics strip wrap */
  .proj-hero-metrics { flex-wrap: wrap; border-radius: 10px; }
  .hm-card { flex: 1; min-width: 100px; }

  .proj-footer { flex-direction: column; gap: 16px; text-align: center; }
}

/* ============================================================
   RESPONSIVE — Mobile (≤768px)
============================================================ */
@media (max-width: 768px) {
  /* Nav */
  #navbar { padding: 16px 20px; }

  /* Hero */
  .proj-hero { padding: 100px 20px 48px; min-height: auto; }
  .proj-hero-title { font-size: clamp(2.4rem, 10vw, 4rem); margin-bottom: 16px; }
  .proj-hero-sub { font-size: 0.92rem; margin-bottom: 28px; }
  .proj-hero-meta { flex-direction: column; align-items: flex-start; gap: 6px; }

  /* Hero metrics */
  .proj-hero-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    border-radius: 10px;
    margin-bottom: 28px;
  }
  .hm-card { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 14px 20px; }
  .hm-card { min-width: 0; }
  .hm-lbl {
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .hm-card:nth-child(2n) { border-right: none; }
  .hm-card:nth-last-child(-n+2) { border-bottom: none; }
  .hm-val { font-size: 1.3rem; }

  /* CTA */
  .proj-hero-cta { flex-direction: column; gap: 10px; }
  .btn-main, .btn-ghost { width: 100%; justify-content: center; }

  /* Main */
  .proj-main { padding: 0 20px 60px; }
  .proj-section { padding: 48px 0; }
  .project-figure-grid { grid-template-columns: minmax(0,1fr); }

  /* Architecture: scroll horizontally */
  .arch-row {
    overflow-x: auto;
    padding-bottom: 12px;
    gap: 6px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .arch-node {
    min-width: 120px;
    max-width: 130px;
    scroll-snap-align: start;
    padding: 14px;
  }
  .an-icon { font-size: 1.2rem; margin-bottom: 6px; }
  .an-title { font-size: 0.72rem; }
  .an-sub { font-size: 0.52rem; }
  .arch-arrow { font-size: 0.9rem; }

  /* Orchestrator */
  .arch-orchestrator { display: none; }
  .arch-infra { display: none; }

  /* Secondary arch */
  .as-box { flex-direction: column; gap: 10px; }

  /* Flow steps */
  .flow-steps { padding-left: 20px; }
  .flow-step {
    grid-template-columns: 44px 1fr;
    gap: 16px;
    padding: 24px 0;
  }
  .fs-num { font-size: 1.1rem; height: 44px; border-radius: 8px; }
  .fs-content h3 { font-size: 0.95rem; }
  .fs-content p { font-size: 0.84rem; }
  .code-pill { font-size: 0.62rem; padding: 5px 10px; word-break: break-all; }

  /* Tech stack */
  .tech-stack-card { padding: 22px; }
  .ts-item { font-size: 0.82rem; }

  /* Challenges */
  .cc-problem, .cc-solution { padding: 18px; }
  .cc-problem h3, .cc-solution h3 { font-size: 0.88rem; }
  .cc-problem p, .cc-solution p { font-size: 0.8rem; }

  /* Next items */
  .next-item { padding: 16px; }
  .next-item p { font-size: 0.84rem; }

  /* Footer */
  .proj-footer { padding: 24px 20px; font-size: 0.75rem; }
}

/* ============================================================
   RESPONSIVE — Small phone (≤480px)
============================================================ */
@media (max-width: 480px) {
  .proj-hero { padding: 90px 16px 40px; }
  .proj-hero-title { font-size: clamp(2rem, 11vw, 3.2rem); }
  .proj-hero-sub { font-size: 0.86rem; }
  .proj-main { padding: 0 16px 48px; }
  .proj-section { padding: 40px 0; }
  .ps-title { font-size: clamp(1.5rem, 7vw, 2rem); margin-bottom: 28px; }

  /* Metrics 2-col stays but smaller */
  .hm-val { font-size: 1.1rem; }
  .hm-lbl { font-size: 0.52rem; }
  .hm-card { padding: 12px 14px; }

  /* Overview */
  .overview-text p { font-size: 0.88rem; }

  /* Flow */
  .flow-step { grid-template-columns: 1fr; gap: 10px; }
  .fs-num { width: 44px; }
  .flow-steps { padding-left: 12px; }

  /* Challenge cards */
  .challenges-grid { gap: 16px; }

  /* Nav back */
  .nav-back { font-size: 0.7rem; }
}