/*
 * ═══════════════════════════════════════════════════
 *  TaxiToLearn — Landing Page Layout (index.html)
 *  Hero, projects ecosystem.
 * ═══════════════════════════════════════════════════
 */

/* ── Hero ───────────────────────────────────────── */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../../assets/images/airport.jpg');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(4, 8, 16, 0.45);
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-top: calc(var(--nav-height) + var(--space-16));
  padding-bottom: var(--space-24);
  text-align: center;
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__badge { margin-bottom: var(--space-8); }

.hero__title {
  font-size: clamp(var(--font-size-3xl), 7vw, var(--font-size-5xl));
  font-weight: var(--font-bold);
  color: var(--text-0);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-6);
}
.hero__title span { color: var(--brand); }

.hero__sub {
  font-size: clamp(var(--font-size-md), 1.8vw, var(--font-size-lg));
  color: var(--text-0);
  font-weight: var(--font-light);
  line-height: var(--leading-loose);
  max-width: 580px;
  margin: 0 auto var(--space-12);
}

.hero__cta {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Projects Section — Radar/HUD background ────── */
#projects {
  position: relative;
  background-color: var(--surface-base);
  background-image:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0,229,255,0.05) 0%, transparent 70%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 59px,
      rgba(0,229,255,0.045) 59px,
      rgba(0,229,255,0.045) 60px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 59px,
      rgba(0,229,255,0.045) 59px,
      rgba(0,229,255,0.045) 60px
    );
}

/* ── Projects Grid — 1 hero + 3 equal below ─────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-16);
}

/* ── Base card — glassmorphism ───────────────────── */
.project-card {
  background: rgba(13, 21, 32, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-height: 300px;
  transition:
    border-color var(--ease-default),
    box-shadow   var(--ease-default),
    transform    var(--ease-spring);
}

.project-card:hover {
  border-color: var(--brand-40);
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.08);
  transform: translateY(-3px);
}

/* ── Featured card (AIrport) — spans full row ────── */
.project-card--featured {
  grid-column: 1 / -1;
  min-height: auto;
  border: 1px solid transparent;
  background:
    linear-gradient(rgba(13, 21, 32, 0.80), rgba(13, 21, 32, 0.80)) padding-box,
    linear-gradient(135deg, var(--brand-40) 0%, var(--brand-12) 50%, transparent 100%) border-box;
  box-shadow: 0 8px 40px rgba(0, 229, 255, 0.06);
}

.project-card--featured:hover {
  border-color: transparent;
  background:
    linear-gradient(rgba(20, 30, 46, 0.88), rgba(20, 30, 46, 0.88)) padding-box,
    linear-gradient(135deg, var(--brand-40) 0%, var(--brand-20) 60%, transparent 100%) border-box;
  box-shadow: 0 12px 48px rgba(0, 229, 255, 0.14);
  transform: translateY(-3px);
}

/* ── Dimmed placeholder cards ────────────────────── */
.project-card--placeholder {
  opacity: 0.65;
}
.project-card--placeholder:hover {
  opacity: 1;
}

/* ── Icon — product logo feel ────────────────────── */
.project-card__icon {
  width: 42px;
  height: 42px;
  background: var(--brand-12);
  border: 1px solid var(--brand-20);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.project-card__icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--brand);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── Card header ─────────────────────────────────── */
.project-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Eyebrow text — engineering / technical feel */
.project-card__concept {
  font-size: 0.67rem;
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--text-3);
  font-style: normal;
}

/* ── Status badges — consistent pill ─────────────── */
.project-card__status {
  display: inline-flex;
  align-items: center;
  font-size: 0.67rem;
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.project-card__status--active {
  background: var(--brand-12);
  color: var(--brand);
  border: 1px solid var(--brand-20);
}

.project-card__status--planning {
  background: rgba(255, 168, 0, 0.10);
  color: #ffb347;
  border: 1px solid rgba(255, 168, 0, 0.28);
}

.project-card__status--future {
  background: rgba(69, 80, 96, 0.15);
  color: var(--status-future);
  border: 1px solid var(--status-future);
}

/* ── Title ───────────────────────────────────────── */
.project-card__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-bold);
  color: var(--text-0);
  letter-spacing: var(--tracking-tight);
}

.project-card--placeholder .project-card__title {
  font-size: var(--font-size-lg);
}

/* ── Body ────────────────────────────────────────── */
.project-card__body {
  font-size: var(--font-size-sm);
  color: var(--text-2);
  line-height: var(--leading-relaxed);
}

/* ── Differentiator quote ────────────────────────── */
.project-card__differentiator {
  font-size: var(--font-size-xs);
  color: var(--text-2);
  font-style: italic;
  line-height: var(--leading-snug);
  padding-left: var(--space-4);
  border-left: 2px solid var(--brand-20);
}

/* ── Footer — always pinned to bottom ────────────── */
.project-card__footer {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
  margin-top: auto;
  padding-top: var(--space-4);
}

/* GitHub icon button */
.btn--github {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  border: none;
  color: var(--text-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-semibold);
  font-family: var(--font-sans);
  padding: 0.75em 0.5em;
  cursor: pointer;
  text-decoration: none;
  transition: color var(--ease-default);
}

.btn--github svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

.btn--github:hover {
  color: var(--brand);
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 960px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card--featured { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__title { letter-spacing: -1px; }
}