/* ============================================================
   index.css  --  Prime Learning Educational Series
   Styles specific to the index / series overview page
   Requires shared.css to be loaded first
   ============================================================ */

/* ---------- INDEX NAV EXTRAS ---------- */
.nav-cta { background:var(--blue-dim); border:1px solid rgba(3,136,166,.4); border-radius:20px; padding:7px 18px; font-family:"DM Mono",monospace; font-size:10px; letter-spacing:.15em; color:var(--blue-light); text-decoration:none; transition:background .2s,border-color .2s; }
.nav-cta:hover { background:rgba(3,136,166,.25); border-color:var(--blue-light); }

/* ---------- INDEX HERO ---------- */
.hero { position:relative; padding:220px var(--pad-x) 100px; overflow:hidden; }
.hero-grid { position:absolute; inset:0; background-image:linear-gradient(rgba(3,136,166,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(3,136,166,.05) 1px,transparent 1px); background-size:60px 60px; pointer-events:none; }
.hero-glow { position:absolute; inset:0; background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(3,136,166,.18) 0%,transparent 65%),radial-gradient(ellipse 40% 30% at 90% 80%,rgba(94,219,160,.06) 0%,transparent 60%); pointer-events:none; }
.hero-inner { position:relative; z-index:1; max-width:var(--content-max); margin:0 auto; text-align:center; display:flex; flex-direction:column; align-items:center; }
.hero-eyebrow { display:inline-flex; align-items:center; gap:10px; background:var(--blue-dim); border:1px solid rgba(3,136,166,.3); border-radius:30px; padding:7px 18px; font-family:"DM Mono",monospace; font-size:10px; letter-spacing:.2em; color:var(--blue-light); text-transform:uppercase; margin-bottom:32px; opacity:0; animation:fadeUp .7s ease .1s forwards; }
.hero-eyebrow::before { content:""; width:7px; height:7px; border-radius:50%; background:var(--blue-light); animation:pulse 2s ease-in-out infinite; }
.hero h1 { font-family:"Lora",serif; font-size:clamp(2.2rem,4.5vw,3.6rem); font-weight:400; font-style:normal; line-height:1.15; letter-spacing:-.02em; white-space:nowrap; margin:0 auto 24px; text-align:center; opacity:0; animation:fadeUp .8s ease .25s forwards; }
.hero h1 em { font-style:italic; color:var(--blue); }
.hero-desc { font-size:clamp(0.95rem, 1vw + 0.5rem, 1.15rem); color:var(--white-dim); max-width:620px; line-height:1.75; margin:0 auto 48px; text-align:center; opacity:0; animation:fadeUp .8s ease .4s forwards; }
.hero-stats { display:flex; gap:40px; opacity:0; animation:fadeUp .8s ease .55s forwards; justify-content:center; }
.hero-stat-num { font-family:"Lora",serif; font-size:clamp(1.4rem, 2vw + 0.4rem, 1.8rem); font-weight:700; color:var(--blue-light); line-height:1; }
.hero-stat-label { font-size:.8rem; color:var(--white-dim); margin-top:4px; text-align:center; }

/* ---------- FILTER BAR ---------- */
.filter-bar { max-width:var(--content-max); margin:0 auto; padding:0 var(--pad-x) 48px; display:flex; gap:10px; flex-wrap:wrap; justify-content:center; position:relative; z-index:1; }
.filter-btn { font-family:"DM Mono",monospace; font-size:10px; letter-spacing:.15em; text-transform:uppercase; padding:12px 24px; border-radius:30px; border:1px solid rgba(255,255,255,.12); background:transparent; color:var(--white-dim); cursor:pointer; transition:all .25s; }
.filter-btn.active,
.filter-btn:hover { background:var(--blue-dim); border-color:rgba(3,136,166,.5); color:var(--blue-light); }

/* ---------- SERIES GRID ---------- */
.series-section { max-width:var(--content-max); margin:0 auto; padding:0 var(--pad-x) 80px; scroll-margin-top:80px; }
.section-title { font-family:"DM Mono",monospace; font-size:10px; letter-spacing:.3em; color:var(--blue); text-transform:uppercase; margin-bottom:28px; padding-bottom:14px; border-bottom:1px solid rgba(3,136,166,.2); }
.series-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(min(300px, 100%),1fr)); gap:24px; margin-bottom:64px; }

/* ---------- LESSON CARD ---------- */
.lesson-card { background:var(--navy-light); border:1px solid rgba(3,136,166,.15); border-radius:18px; overflow:hidden; transition:transform .3s,border-color .3s,box-shadow .3s; position:relative; cursor:pointer; text-decoration:none; display:flex; flex-direction:column; color:inherit; min-height:300px; }
.lesson-card:hover { transform:translateY(-6px); border-color:rgba(3,136,166,.45); box-shadow:0 24px 60px rgba(0,0,0,.5); }
.lesson-card.locked { opacity:.6; cursor:default; }
.lesson-card.locked:hover { transform:none; border-color:rgba(3,136,166,.15); box-shadow:none; }

.card-top { padding:28px 28px 0; position:relative; flex:1; }
.card-num-badge { display:inline-flex; align-items:center; justify-content:center; width:44px; height:44px; border-radius:10px; background:var(--blue-dim); border:1px solid rgba(3,136,166,.3); font-family:"DM Sans",sans-serif; font-size:1.1rem; font-weight:400; color:var(--blue-light); margin-bottom:18px; }
.card-status { font-family:"DM Mono",monospace; font-size:9px; letter-spacing:.15em; text-transform:uppercase; padding:4px 12px; border-radius:20px; flex-shrink:0; }
.card-status.available { background:rgba(94,219,160,.12); border:1px solid rgba(94,219,160,.3); color:var(--green); }
.card-status.coming { background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.1); color:rgba(255,255,255,.4); }
.card-category { font-family:"DM Mono",monospace; font-size:9px; letter-spacing:.2em; color:var(--blue); text-transform:uppercase; margin-bottom:8px; }
.card-title { font-family:"Lora",serif; font-size:clamp(1.1rem, 1.2vw + 0.3rem, 1.3rem); font-weight:400; line-height:1.2; margin-bottom:12px; }
.card-desc { font-size:.88rem; color:var(--white-dim); line-height:1.7; margin-bottom:0; }

.card-bottom { padding:20px 28px 24px; margin-top:20px; border-top:1px solid rgba(255,255,255,.05); display:flex; align-items:center; justify-content:space-between; }
.card-meta { display:flex; gap:16px; }
.card-tag { font-family:"DM Mono",monospace; font-size:9px; letter-spacing:.1em; color:rgba(255,255,255,.35); text-transform:uppercase; }
.card-arrow { width:32px; height:32px; border-radius:50%; background:var(--blue-dim); border:1px solid rgba(3,136,166,.3); display:flex; align-items:center; justify-content:center; transition:background .25s,border-color .25s; }
.lesson-card:hover .card-arrow { background:rgba(3,136,166,.3); border-color:var(--blue-light); }
.lesson-card.locked .card-arrow { display:none; }

/* ---------- ACCENT STRIP ON CARDS ---------- */
.card-strip { height:3px; background:linear-gradient(90deg,var(--blue),var(--blue-light)); position:absolute; top:0; left:0; right:0; }
.card-strip.tier-2 { background:linear-gradient(90deg,#0d6e87,var(--blue)); }
.card-strip.tier-3 { background:linear-gradient(90deg,var(--blue-light),rgba(94,219,160,.8)); }
.card-strip.tier-4 { background:linear-gradient(90deg,rgba(167,139,250,.7),var(--blue-light)); }
.card-strip.tier-5 { background:linear-gradient(90deg,rgba(255,154,60,.6),rgba(167,139,250,.6)); }
.card-strip.tier-6 { background:linear-gradient(90deg,rgba(167,139,250,.7),rgba(255,154,60,.7)); }

/* ---------- FEATURED CARD (full-width) ---------- */
.lesson-card.featured { grid-column:1 / -1; display:grid; grid-template-columns:1fr 1fr; gap:0; }
.lesson-card.featured .card-top { padding:36px 36px 36px; display:flex; flex-direction:column; justify-content:space-between; }
.lesson-card.featured .card-bottom { border-top:none; border-left:1px solid rgba(255,255,255,.05); flex-direction:column; align-items:flex-start; justify-content:center; padding:36px; gap:20px; }
.lesson-card.featured .card-title { font-size:1.6rem; }
.lesson-card.featured .card-desc { font-size:.95rem; max-width:420px; }
.featured-highlights { display:flex; flex-direction:column; gap:12px; }
.fh-item { display:flex; gap:12px; align-items:flex-start; font-size:.85rem; color:var(--white-dim); }
.fh-item svg { flex-shrink:0; margin-top:2px; }

/* ---------- INDEX DIVIDER ---------- */
.divider { margin:0 var(--pad-x) 64px; }

/* ---------- ADVANCED SERIES CTA ---------- */
.advanced-cta { max-width:var(--content-max); margin:0 auto 80px; padding:0 var(--pad-x); }
.advanced-cta-inner { position:relative; background:linear-gradient(135deg,rgba(167,139,250,.08),rgba(255,154,60,.08)); border:1px solid rgba(167,139,250,.25); border-radius:20px; padding:56px 48px; text-align:center; overflow:hidden; }
.advanced-cta-inner::before { content:""; position:absolute; inset:0; background:radial-gradient(ellipse 60% 50% at 50% 0%,rgba(167,139,250,.12),transparent 70%); pointer-events:none; }
.advanced-cta-badge { display:inline-block; font-family:"DM Mono",monospace; font-size:10px; letter-spacing:.2em; text-transform:uppercase; color:rgba(167,139,250,.9); background:rgba(167,139,250,.12); border:1px solid rgba(167,139,250,.3); border-radius:20px; padding:6px 16px; margin-bottom:20px; position:relative; }
.advanced-cta-title { font-family:"Lora",serif; font-size:clamp(1.4rem,2.5vw,2rem); font-weight:700; margin-bottom:16px; position:relative; }
.advanced-cta-desc { font-size:clamp(0.9rem,1vw + 0.4rem,1.05rem); color:var(--white-dim); max-width:600px; margin:0 auto 32px; line-height:1.75; position:relative; }
.advanced-cta-btn { display:inline-flex; align-items:center; gap:10px; background:linear-gradient(135deg,rgba(167,139,250,.7),rgba(255,154,60,.6)); color:#fff; border:none; border-radius:12px; padding:16px 32px; font-family:"Lora",serif; font-size:.95rem; font-weight:700; text-decoration:none; transition:transform .2s,box-shadow .2s; position:relative; }
.advanced-cta-btn:hover { transform:translateY(-2px); box-shadow:0 12px 36px rgba(167,139,250,.3); }

/* ---------- NEWSLETTER ---------- */
.newsletter { background:var(--navy-mid); border-top:1px solid rgba(3,136,166,.12); padding:80px var(--pad-x); }
.newsletter-inner { max-width:var(--content-max); margin:0 auto; display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
.newsletter h2 { font-family:"Lora",serif; font-size:clamp(1.5rem,3vw,2.2rem); font-weight:700; margin-bottom:12px; }
.newsletter p { font-size:.95rem; color:var(--white-dim); line-height:1.7; }
.newsletter-form { display:flex; gap:12px; }
.newsletter-label { font-family:"DM Mono",monospace; font-size:9px; letter-spacing:.2em; color:var(--blue); text-transform:uppercase; margin-bottom:10px; display:block; }
.newsletter-input { flex:1; background:var(--navy-light); border:1px solid rgba(3,136,166,.25); border-radius:10px; padding:14px 18px; font-size:.9rem; color:var(--white); outline:none; font-family:"DM Sans",sans-serif; transition:border-color .2s; }
.newsletter-input::placeholder { color:rgba(255,255,255,.3); }
.newsletter-input:focus { border-color:var(--blue); }
.newsletter-btn { background:linear-gradient(135deg,var(--blue),var(--blue-light)); color:#fff; border:none; border-radius:10px; padding:14px 28px; font-family:"Lora",serif; font-size:.9rem; font-weight:700; cursor:pointer; transition:transform .2s,box-shadow .2s; white-space:nowrap; }
.newsletter-btn:hover { transform:translateY(-2px); box-shadow:0 10px 30px rgba(3,136,166,.35); }
.newsletter-btn:disabled { opacity:.6; cursor:not-allowed; transform:none; box-shadow:none; }
.newsletter-msg { margin-top:12px; font-family:"DM Mono",monospace; font-size:.8rem; letter-spacing:.04em; }
.newsletter-msg--success { color:var(--green); }
.newsletter-msg--error { color:var(--red); }

/* ---------- INDEX FOOTER EXTRAS ---------- */
.footer-links { display:flex; justify-content:center; gap:28px; margin-bottom:16px; }
.footer-link { font-family:"DM Mono",monospace; font-size:9px; letter-spacing:.18em; color:rgba(255,255,255,.35); text-transform:uppercase; text-decoration:none; transition:color .2s; }
.footer-link:hover { color:var(--blue-light); }

/* ---------- RESPONSIVE  --  index-specific ---------- */
@media(min-width:1025px){
  .series-grid { grid-template-columns:repeat(3,1fr); }
}

@media(min-width:601px) and (max-width:1024px){
  .series-grid { grid-template-columns:repeat(2,1fr); }
}

@media(max-width:1024px){
  .lesson-card.featured { grid-template-columns:1fr; }
  .lesson-card.featured .card-bottom { border-left:none; border-top:1px solid rgba(255,255,255,.05); }
  .newsletter-inner { grid-template-columns:1fr; }
}

@media(max-width:600px){
  .nav-links { display:none; }
  .series-grid { grid-template-columns:1fr; }
  .hero-stats { gap:24px; flex-wrap:wrap; }
  .newsletter-form { flex-direction:column; }
  .filter-bar { gap:8px; }
  .filter-btn { padding:10px 18px; font-size:9px; min-height:44px; }
  .hero h1 { white-space:normal; }
  .lesson-card { min-height:auto; }
  .footer-link { font-size:11px; padding:6px 4px; }
}