/* ============================================================
   THE CREATIVITY LAB — Articles / The Lab Journal
   Premium digital-laboratory layout. Black canvas, hairline grid,
   cinematic asymmetrical masonry. Motion: 700ms cubic-bezier(.22,1,.36,1).
   ============================================================ */
:root {
  --ar-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ar-dur: 700ms;
}

.articles { position: relative; min-height: 100svh; }

/* Ambient field — slow drifting light, faint noise */
.ar-amb { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.7;
  background-image:
    radial-gradient(46% 38% at 16% 8%, rgba(237,70,9,0.055) 0%, transparent 72%),
    radial-gradient(42% 38% at 88% 86%, rgba(0,153,255,0.05) 0%, transparent 72%);
}
.ar-amb::after { content: ""; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E"); }

/* Thin vertical grid lines across the viewport */
.ar-gridlines { position: fixed; inset: clamp(10px, 1.4vw, 22px); z-index: 1; pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 25% 100%;
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 12%, #000 100%);
  mask-image: linear-gradient(180deg, transparent 0, #000 12%, #000 100%);
}
@media (max-width: 720px) { .ar-gridlines { background-size: 50% 100%; } }

.ar-shell { position: relative; z-index: 2; padding: clamp(20px, 4.5vw, 52px); }
.ar-shell--top { padding-bottom: 0; }

/* ---------- HERO ---------- */
.ar-hero { padding: clamp(60px, 10vw, 150px) 0 clamp(30px, 4vw, 56px); max-width: 1180px; }
.ar-eyebrow { display: inline-flex; align-items: baseline; gap: 10px; font-family: var(--font-label); font-size: 13px; font-weight: var(--fw-semibold); letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-secondary); }
.ar-eyebrow .idx { color: var(--text-faint); }
.ar-title { font-family: var(--font-display); font-weight: var(--fw-bold); font-size: clamp(2.5rem, 7.4vw, 7rem); line-height: 0.92; letter-spacing: var(--tracking-display); color: var(--text-primary); margin-top: clamp(26px, 3vw, 46px); text-wrap: balance; }
.ar-title .ln { display: block; }
.ar-title .muted { color: var(--text-muted); }
.ar-lead { margin-top: clamp(28px, 3.2vw, 42px); max-width: 60ch; font-size: clamp(1.05rem, 1.25vw, 1.3rem); line-height: 1.55; letter-spacing: -0.01em; color: var(--text-secondary); }

/* ---------- CONTROLS (search + filters) ---------- */
.ar-controls { position: relative; z-index: 2; display: flex; flex-wrap: wrap; align-items: center; gap: clamp(10px, 1.4vw, 18px); padding: clamp(28px, 4vw, 52px) 0 clamp(18px, 2vw, 26px); }
.ar-search { position: relative; display: flex; align-items: center; flex: 1 1 280px; min-width: 220px; max-width: 360px; }
.ar-search svg { position: absolute; left: 16px; color: var(--text-faint); pointer-events: none; }
.ar-search input { width: 100%; background: rgba(255,255,255,0.03); border: 1px solid var(--border-subtle); color: var(--text-primary); font-family: var(--font-body); font-size: 15px; letter-spacing: -0.01em; padding: 14px 16px 14px 44px; border-radius: var(--radius-button); outline: none; transition: border-color var(--ar-dur) var(--ar-ease), background var(--ar-dur) var(--ar-ease); }
.ar-search input::placeholder { color: var(--text-faint); }
.ar-search input:focus { border-color: var(--border-strong); background: rgba(255,255,255,0.05); }

.ar-filters { display: flex; flex-wrap: wrap; gap: 6px; flex: 1 1 auto; }
.ar-filter { position: relative; background: transparent; border: 1px solid transparent; cursor: pointer; padding: 9px 15px; border-radius: var(--radius-pill); font-family: var(--font-label); font-weight: var(--fw-medium); font-size: 12.5px; letter-spacing: 0.04em; color: var(--text-faint); white-space: nowrap; transition: color var(--ar-dur) var(--ar-ease), background var(--ar-dur) var(--ar-ease), border-color var(--ar-dur) var(--ar-ease); }
.ar-filter:hover { color: var(--text-primary); }
.ar-filter.active { color: var(--text-primary); background: rgba(255,255,255,0.06); border-color: var(--border-subtle); }
.ar-count { margin-left: auto; font-family: var(--font-label); font-size: 12px; letter-spacing: 0.06em; color: var(--text-faint); white-space: nowrap; padding-left: 6px; }

.ar-divider { height: 1px; background: var(--border-subtle); margin: clamp(8px, 1.4vw, 16px) 0 clamp(30px, 4vw, 56px); }

/* ---------- MASONRY GRID ---------- */
.ar-grid { column-count: 1; column-gap: clamp(16px, 1.6vw, 24px); }
@media (min-width: 680px) { .ar-grid { column-count: 2; } }
@media (min-width: 1120px) { .ar-grid { column-count: 3; } }

.ar-card { break-inside: avoid; margin-bottom: clamp(16px, 1.6vw, 24px); display: block; cursor: pointer; text-decoration: none; color: inherit; }
.ar-frame {
  position: relative; overflow: hidden; aspect-ratio: var(--ar, 4 / 5);
  border: 1px solid var(--border-subtle); background: var(--mg-ink-900);
  transition: border-color var(--ar-dur) var(--ar-ease), box-shadow var(--ar-dur) var(--ar-ease);
}
.ar-card:hover .ar-frame { border-color: rgba(255,255,255,0.34); box-shadow: 0 50px 110px -55px rgba(0,0,0,0.92); }
.ar-shot { position: absolute; inset: 0; }
.ar-shot .ar-video { display: block; width: 100%; height: 100%; object-fit: cover; transform: scale(1); transition: transform 1200ms var(--ar-ease); }
.ar-card:hover .ar-shot .ar-video { transform: scale(1.04); }
.ar-shot .ar-img, .ar-feat-media .ar-img { display: block; width: 100%; height: 100%; object-fit: cover; transform: scale(1); transition: transform 1200ms var(--ar-ease); }
.ar-card:hover .ar-shot .ar-img, .ar-feat-card:hover .ar-feat-media .ar-img { transform: scale(1.04); }

/* base scrim keeps title legible; intensifies on hover */
.ar-glass { position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(5,5,7,0.34) 0%, rgba(5,5,7,0.06) 38%, rgba(5,5,7,0.82) 100%);
  transition: opacity var(--ar-dur) var(--ar-ease), backdrop-filter var(--ar-dur) var(--ar-ease); }
.ar-glassfull { position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(5,5,7,0.55) 0%, rgba(5,5,7,0.4) 45%, rgba(5,5,7,0.88) 100%);
  opacity: 0; -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
  transition: opacity var(--ar-dur) var(--ar-ease); }
.ar-card:hover .ar-glassfull { opacity: 1; }

.ar-top { position: absolute; left: 18px; right: 18px; top: 16px; z-index: 3; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.ar-cat { font-family: var(--font-label); font-size: 11px; font-weight: var(--fw-semibold); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-primary); }
.ar-date { font-family: var(--font-label); font-size: 11px; letter-spacing: 0.06em; color: var(--text-secondary); white-space: nowrap; }

.ar-body { position: absolute; left: 18px; right: 18px; bottom: 18px; z-index: 3; }
.ar-h { font-family: var(--font-display); font-weight: var(--fw-semibold); font-size: clamp(1.35rem, 1.7vw, 1.95rem); line-height: 1.02; letter-spacing: -0.02em; color: var(--text-primary); transform: translateY(8px); transition: transform var(--ar-dur) var(--ar-ease); }
.ar-card:hover .ar-h { transform: translateY(0); }

.ar-reveal { max-height: 0; opacity: 0; overflow: hidden; transition: max-height var(--ar-dur) var(--ar-ease), opacity var(--ar-dur) var(--ar-ease), margin-top var(--ar-dur) var(--ar-ease); margin-top: 0; }
.ar-card:hover .ar-reveal { max-height: 260px; opacity: 1; margin-top: 14px; }
.ar-readtime { font-family: var(--font-label); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); }
.ar-excerpt { margin-top: 8px; font-size: 13.5px; line-height: 1.5; color: var(--text-secondary); max-width: 42ch; }

.ar-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 16px; }
.ar-author { display: flex; align-items: center; gap: 10px; min-width: 0; }
.ar-avatar { width: 30px; height: 30px; border-radius: var(--radius-pill); flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-label); font-size: 11px; font-weight: var(--fw-semibold); letter-spacing: 0.02em; color: var(--text-primary); background: linear-gradient(140deg, #242424, #0f0f0f); border: 1px solid var(--border-default); }
.ar-author__name { font-size: 13px; font-weight: var(--fw-medium); color: var(--text-primary); line-height: 1.1; }
.ar-author__role { font-family: var(--font-label); font-size: 10.5px; letter-spacing: 0.04em; color: var(--text-faint); line-height: 1.2; margin-top: 2px; }
.ar-arrow { flex-shrink: 0; width: 38px; height: 38px; border-radius: var(--radius-pill); display: inline-flex; align-items: center; justify-content: center; color: var(--text-primary); border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.04); transform: translateX(16px); opacity: 0; transition: transform var(--ar-dur) var(--ar-ease), opacity var(--ar-dur) var(--ar-ease), background var(--ar-dur) var(--ar-ease); }
.ar-card:hover .ar-arrow { transform: translateX(0); opacity: 1; }
.ar-card:hover .ar-arrow:hover { background: var(--text-primary); color: var(--mg-black); }

.ar-empty { padding: clamp(48px, 8vw, 110px) 0; text-align: center; color: var(--text-faint); font-family: var(--font-label); letter-spacing: 0.04em; }

/* ---------- FEATURED ---------- */
.ar-featured { position: relative; z-index: 2; margin: clamp(64px, 9vw, 140px) 0 clamp(20px, 4vw, 48px); padding-top: clamp(40px, 5vw, 72px); border-top: 1px solid var(--border-subtle); }
.ar-sec-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: clamp(28px, 3.5vw, 48px); }
.ar-sec-eyebrow { font-family: var(--font-label); font-size: 13px; font-weight: var(--fw-semibold); letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-secondary); display: inline-flex; gap: 10px; align-items: baseline; }
.ar-sec-eyebrow .idx { color: var(--text-faint); }
.ar-sec-note { font-size: 14px; color: var(--text-faint); max-width: 40ch; }

.ar-feat-card { display: grid; grid-template-columns: 1fr; gap: 0; border: 1px solid var(--border-subtle); background: var(--mg-ink-900); overflow: hidden; cursor: pointer; transition: border-color var(--ar-dur) var(--ar-ease), box-shadow var(--ar-dur) var(--ar-ease); text-decoration: none; color: inherit; }
@media (min-width: 900px) { .ar-feat-card { grid-template-columns: 1.15fr 1fr; } }
.ar-feat-card:hover { border-color: rgba(255,255,255,0.3); box-shadow: 0 60px 130px -60px rgba(0,0,0,0.9); }
.ar-feat-media { position: relative; overflow: hidden; aspect-ratio: 16 / 11; min-height: 320px; }
.ar-feat-tag { position: absolute; left: 20px; top: 18px; z-index: 2; font-family: var(--font-label); font-size: 11px; font-weight: var(--fw-semibold); letter-spacing: 0.14em; text-transform: uppercase; color: var(--mg-orange); }
.ar-feat-body { padding: clamp(30px, 3.4vw, 56px); display: flex; flex-direction: column; justify-content: center; gap: clamp(18px, 2vw, 26px); }
.ar-feat-meta { font-family: var(--font-label); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); display: flex; gap: 14px; align-items: center; }
.ar-feat-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-faint); }
.ar-feat-h { font-family: var(--font-display); font-weight: var(--fw-bold); font-size: clamp(2rem, 3.6vw, 3.4rem); line-height: 0.98; letter-spacing: var(--tracking-tight); color: var(--text-primary); }
.ar-feat-h .muted { color: var(--text-muted); }
.ar-feat-excerpt { font-size: clamp(1.02rem, 1.2vw, 1.2rem); line-height: 1.55; color: var(--text-secondary); max-width: 52ch; }
.ar-feat-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 6px; }
.ar-feat-read { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-label); font-size: 13px; font-weight: var(--fw-semibold); letter-spacing: 0.04em; color: var(--text-primary); }
.ar-feat-read svg { transition: transform var(--ar-dur) var(--ar-ease); }
.ar-feat-card:hover .ar-feat-read svg { transform: translate(3px, -3px); }

/* ---------- LAB NOTES ---------- */
.ar-notes { position: relative; z-index: 2; margin: clamp(56px, 8vw, 120px) 0 clamp(40px, 6vw, 90px); padding-top: clamp(40px, 5vw, 72px); border-top: 1px solid var(--border-subtle); }
.ar-notes-grid { display: grid; grid-template-columns: 1fr; gap: clamp(14px, 1.4vw, 20px); }
@media (min-width: 640px) { .ar-notes-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .ar-notes-grid { grid-template-columns: repeat(4, 1fr); } }
.ar-note { position: relative; border: 1px solid var(--border-subtle); background: rgba(255,255,255,0.012); padding: clamp(22px, 2vw, 30px); min-height: 220px; display: flex; flex-direction: column; transition: border-color var(--ar-dur) var(--ar-ease), background var(--ar-dur) var(--ar-ease), transform var(--ar-dur) var(--ar-ease); }
.ar-note:hover { border-color: rgba(255,255,255,0.26); background: rgba(255,255,255,0.03); transform: translateY(-4px); }
.ar-note__idx { font-family: var(--font-label); font-size: 11px; font-weight: var(--fw-semibold); letter-spacing: 0.1em; color: var(--text-faint); }
.ar-note__cat { font-family: var(--font-label); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mg-orange); margin-top: 18px; }
.ar-note__text { font-family: var(--font-display); font-weight: var(--fw-medium); font-size: clamp(1.05rem, 1.25vw, 1.28rem); line-height: 1.22; letter-spacing: -0.015em; color: var(--text-primary); margin-top: 10px; }
.ar-note__foot { margin-top: auto; padding-top: 18px; display: flex; align-items: center; justify-content: space-between; }
.ar-note__time { font-family: var(--font-label); font-size: 11px; letter-spacing: 0.06em; color: var(--text-faint); }
.ar-note__plus { color: var(--text-faint); font-size: 18px; line-height: 1; transition: transform var(--ar-dur) var(--ar-ease), color var(--ar-dur) var(--ar-ease); }
.ar-note:hover .ar-note__plus { transform: rotate(90deg); color: var(--text-primary); }

@media (prefers-reduced-motion: reduce) {
}