/* MDRUDW Platform 3.0 — Phase A2 Component Library
   Version 3.0.0-alpha.3
   Uses A1 design tokens from design-system.css / app.css
*/

/* ---------- Layout primitives ---------- */
.md-section{
  padding-block:clamp(42px,7vw,82px);
}
.md-section--tight{padding-block:clamp(28px,4vw,48px)}
.md-section-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:24px;
}
.md-section-head h2,
.md-section-head h3{margin:0}
.md-section-head p{margin:7px 0 0;color:var(--md-muted);max-width:680px}
.md-divider{
  height:1px;
  border:0;
  background:var(--md-line);
  margin:var(--md-space-8) 0;
}

/* ---------- Hero ---------- */
.md-hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  min-height:clamp(380px,68vh,720px);
  display:flex;
  align-items:flex-end;
  border:1px solid var(--md-line);
  border-radius:var(--md-radius-xl);
  background:
    radial-gradient(circle at 18% 20%,rgba(126,217,177,.13),transparent 34%),
    linear-gradient(160deg,var(--md-surface-2),var(--md-bg-elevated));
}
.md-hero__media{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  z-index:-3;
}
.md-hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-2;
  background:linear-gradient(180deg,rgba(7,16,12,.05) 20%,rgba(7,16,12,.82) 72%,rgba(7,16,12,.96));
}
.md-hero__content{
  width:min(840px,100%);
  padding:clamp(26px,5vw,58px);
}
.md-hero__title{
  margin:8px 0 14px;
  font-size:clamp(2.35rem,7vw,5.3rem);
  line-height:.95;
  letter-spacing:-.045em;
}
.md-hero__lead{
  max-width:670px;
  margin:0;
  color:var(--md-text-soft);
  line-height:1.65;
  font-size:clamp(1rem,2vw,1.15rem);
}
.md-hero__actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:24px;
}

/* ---------- Card system ---------- */
.md-card{
  position:relative;
  padding:22px;
}
.md-card__label{
  color:var(--md-muted);
  font-size:.78rem;
  font-weight:800;
  letter-spacing:.09em;
  text-transform:uppercase;
}
.md-card__title{
  margin:8px 0 0;
  font-size:1.2rem;
  line-height:1.25;
}
.md-card__body{
  margin-top:11px;
  color:var(--md-text-soft);
  line-height:1.65;
}
.md-card__footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--md-line);
}
.md-card--interactive{
  display:block;
  text-decoration:none;
  transition:transform var(--md-transition),border-color var(--md-transition),background var(--md-transition);
}
.md-card--interactive:hover{
  transform:translateY(-2px);
  border-color:rgba(126,217,177,.44)!important;
  background:linear-gradient(180deg,rgba(126,217,177,.075),rgba(255,255,255,.018))!important;
}

/* ---------- Metric / statistic ---------- */
.md-stat{
  min-height:132px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  padding:20px;
  border:1px solid var(--md-line);
  border-radius:var(--md-radius-lg);
  background:var(--md-surface-soft);
}
.md-stat__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.md-stat__icon{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--md-accent-soft);
  color:var(--md-accent);
  font-size:1.05rem;
}
.md-stat__label{color:var(--md-muted);font-size:.85rem;font-weight:700}
.md-stat__value{
  margin-top:18px;
  font-size:clamp(1.7rem,4vw,2.6rem);
  line-height:1;
  letter-spacing:-.035em;
  font-weight:800;
}
.md-stat__meta{margin-top:8px;color:var(--md-muted);font-size:.82rem}

/* ---------- Progress ---------- */
.md-progress{
  display:grid;
  gap:9px;
}
.md-progress__head{
  display:flex;
  justify-content:space-between;
  gap:12px;
  color:var(--md-text-soft);
  font-size:.86rem;
}
.md-progress__track{
  position:relative;
  overflow:hidden;
  height:10px;
  border-radius:999px;
  background:rgba(255,255,255,.07);
}
.md-progress__bar{
  height:100%;
  width:var(--md-progress,0%);
  max-width:100%;
  border-radius:inherit;
  background:linear-gradient(90deg,var(--md-accent-strong),var(--md-accent));
}

/* ---------- Timeline ---------- */
.md-timeline{
  position:relative;
  display:grid;
  gap:0;
}
.md-timeline::before{
  content:"";
  position:absolute;
  left:17px;
  top:18px;
  bottom:18px;
  width:1px;
  background:var(--md-line-strong);
}
.md-timeline__item{
  position:relative;
  display:grid;
  grid-template-columns:36px minmax(0,1fr);
  gap:16px;
  padding:0 0 26px;
}
.md-timeline__item:last-child{padding-bottom:0}
.md-timeline__dot{
  position:relative;
  z-index:1;
  display:grid;
  place-items:center;
  width:35px;
  height:35px;
  border-radius:999px;
  border:1px solid var(--md-line-strong);
  background:var(--md-bg-elevated);
  color:var(--md-accent);
  font-size:.8rem;
  font-weight:800;
}
.md-timeline__item.is-active .md-timeline__dot{
  background:var(--md-accent);
  color:#07110d;
}
.md-timeline__content{
  padding:16px 18px;
  border:1px solid var(--md-line);
  border-radius:var(--md-radius-md);
  background:rgba(255,255,255,.025);
}
.md-timeline__content h3{margin:0;font-size:1.03rem}
.md-timeline__content p{margin:7px 0 0;color:var(--md-muted);line-height:1.55}

/* ---------- Gallery ---------- */
.md-gallery{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:10px;
}
.md-gallery__item{
  grid-column:span 4;
  position:relative;
  overflow:hidden;
  aspect-ratio:4/3;
  border-radius:var(--md-radius-md);
  border:1px solid var(--md-line);
  background:var(--md-surface-2);
}
.md-gallery__item--hero{
  grid-column:span 8;
  grid-row:span 2;
  aspect-ratio:auto;
  min-height:380px;
}
.md-gallery__item img,
.md-gallery__item video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.md-gallery__caption{
  position:absolute;
  inset:auto 0 0;
  padding:28px 14px 12px;
  color:#fff;
  font-size:.82rem;
  background:linear-gradient(transparent,rgba(0,0,0,.72));
}

/* ---------- Actions ---------- */
.md-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.md-btn{
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 15px;
  border-radius:var(--md-radius-sm);
  border:1px solid var(--md-line-strong);
  background:var(--md-surface-soft);
  color:var(--md-text);
  text-decoration:none;
  font:inherit;
  font-weight:800;
  cursor:pointer;
  transition:transform var(--md-transition),background var(--md-transition),border-color var(--md-transition);
}
.md-btn:hover{background:var(--md-accent-soft);border-color:rgba(126,217,177,.50)}
.md-btn:active{transform:translateY(1px)}
.md-btn--primary{background:var(--md-accent);border-color:transparent;color:#07110d}
.md-btn--primary:hover{background:var(--md-accent-strong)}
.md-btn--danger{color:#ffe4df;border-color:rgba(223,140,121,.32);background:rgba(223,140,121,.08)}
.md-btn--ghost{border-color:transparent;background:transparent;color:var(--md-text-soft)}

/* ---------- Alerts / callouts ---------- */
.md-alert{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:12px;
  padding:15px 17px;
  border-radius:var(--md-radius-md);
  border:1px solid var(--md-line);
  background:var(--md-surface-soft);
}
.md-alert__icon{
  display:grid;
  place-items:center;
  width:30px;
  height:30px;
  border-radius:10px;
  background:var(--md-accent-soft);
  color:var(--md-accent);
}
.md-alert h3{margin:0;font-size:.95rem}
.md-alert p{margin:4px 0 0;color:var(--md-muted);line-height:1.5;font-size:.9rem}
.md-alert--warning{border-color:rgba(229,195,125,.28);background:rgba(229,195,125,.06)}
.md-alert--warning .md-alert__icon{color:var(--md-warning);background:rgba(229,195,125,.11)}
.md-alert--danger{border-color:rgba(223,140,121,.28);background:rgba(223,140,121,.06)}
.md-alert--danger .md-alert__icon{color:var(--md-danger);background:rgba(223,140,121,.11)}

/* ---------- Empty state ---------- */
.md-empty{
  padding:38px 22px;
  text-align:center;
  border:1px dashed var(--md-line-strong);
  border-radius:var(--md-radius-lg);
  background:rgba(255,255,255,.018);
}
.md-empty__icon{font-size:1.7rem}
.md-empty h3{margin:12px 0 6px}
.md-empty p{max-width:520px;margin:0 auto;color:var(--md-muted);line-height:1.6}
.md-empty .md-actions{justify-content:center;margin-top:18px}

/* ---------- Modal ---------- */
.md-modal[hidden]{display:none!important}
.md-modal{
  position:fixed;
  inset:0;
  z-index:10000;
  display:grid;
  place-items:center;
  padding:20px;
  background:rgba(0,0,0,.70);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.md-modal__dialog{
  width:min(620px,100%);
  max-height:min(82vh,760px);
  overflow:auto;
  padding:22px;
  border:1px solid var(--md-line-strong);
  border-radius:var(--md-radius-xl);
  background:var(--md-bg-elevated);
  box-shadow:0 24px 80px rgba(0,0,0,.42);
}
.md-modal__head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  margin-bottom:18px;
}
.md-modal__head h2{margin:0;font-size:1.25rem}
.md-modal__close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--md-line);
  background:transparent;color:var(--md-text);cursor:pointer;
}

/* ---------- Segmented navigation ---------- */
.md-tabs{
  display:flex;
  gap:6px;
  padding:5px;
  overflow:auto;
  border:1px solid var(--md-line);
  border-radius:var(--md-radius-md);
  background:rgba(255,255,255,.025);
}
.md-tab{
  flex:0 0 auto;
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px 13px;
  border-radius:11px;
  border:0;
  background:transparent;
  color:var(--md-muted);
  text-decoration:none;
  font-weight:800;
}
.md-tab.is-active{
  background:var(--md-accent-soft);
  color:var(--md-accent);
}

/* ---------- Media queries ---------- */
@media(max-width:760px){
  .md-section-head{align-items:start;flex-direction:column}
  .md-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .md-gallery__item,
  .md-gallery__item--hero{
    grid-column:auto;
    grid-row:auto;
    min-height:0;
    aspect-ratio:1/1;
  }
  .md-gallery__item--hero{grid-column:1/-1;aspect-ratio:4/3}
  .md-card{padding:18px}
  .md-timeline__content{padding:14px 15px}
  .md-btn{min-height:46px}
}
@media(max-width:420px){
  .md-gallery{grid-template-columns:1fr}
  .md-gallery__item,
  .md-gallery__item--hero{grid-column:auto;aspect-ratio:4/3}
}