/* ============================================================
   FudanEdu — Modern Professional Guest Post Platform
   Loaded via <link> from resources/views/posts/index.blade.php
   CSS variables from base layout: --primary, --bg, --text, --card, --border, --radius
   ============================================================ */

/* ---------- RESET & BASE ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}

/* ---------- HERO ---------- */
.ga-hero{
    margin:40px auto 0;
    max-width:1280px;
    border-radius:28px;
    overflow:hidden;
    background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#0f172a 100%);
    position:relative
}
.ga-hero::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(ellipse at 20% 50%,rgba(37,99,235,.25) 0%,transparent 60%),
               radial-gradient(ellipse at 80% 20%,rgba(124,58,237,.2) 0%,transparent 50%);
    pointer-events:none
}
.ga-hero-inner{
    position:relative;z-index:1;
    display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
    padding:72px 56px;color:#fff
}
.ga-badge{
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(255,255,255,.1);backdrop-filter:blur(8px);
    border:1px solid rgba(255,255,255,.2);
    font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
    padding:8px 18px;border-radius:50px;margin-bottom:24px;color:#fff
}
.ga-badge::before{content:"✨";color:#fbbf24}
.ga-title{
    font-size:clamp(34px,4.8vw,52px);font-weight:800;line-height:1.1;letter-spacing:-1.2px;margin-bottom:20px;color:#fff
}
.ga-title .ga-hl{
    background:linear-gradient(90deg,#60a5fa,#c084fc);
    -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text
}
.ga-desc{
    font-size:17px;line-height:1.7;color:#cbd5e1;max-width:520px;margin-bottom:32px
}
.ga-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.ga-btn{
    display:inline-flex;align-items:center;gap:8px;padding:15px 30px;border-radius:14px;
    font-weight:700;font-size:15px;text-decoration:none;transition:transform .25s,box-shadow .25s,background .25s
}
.ga-btn-primary{background:#fff;color:#0f172a;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.ga-btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.4)}
.ga-btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.25)}
.ga-btn-ghost:hover{background:rgba(255,255,255,.18)}
.ga-btn-sm{padding:10px 22px;font-size:13px;font-weight:600;border-radius:10px;background:rgba(255,255,255,.15);color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.3);transition:background .2s}
.ga-btn-sm:hover{background:rgba(255,255,255,.25)}
.ga-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12)}
.ga-stat-num{font-size:34px;font-weight:800;letter-spacing:-1px;color:#fff;line-height:1}
.ga-stat-label{font-size:12px;color:#94a3b8;text-transform:uppercase;letter-spacing:.8px;margin-top:6px}

/* Spotlight */
.ga-spotlight{
    background:rgba(255,255,255,.97);border-radius:22px;overflow:hidden;
    box-shadow:0 24px 60px rgba(0,0,0,.35);color:#0f172a;margin-top:28px
}
.ga-spotlight-label{display:block;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;padding:10px 22px}
.ga-spotlight-img{display:block;width:100%;height:220px;overflow:hidden}
.ga-spotlight-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.ga-spotlight-img:hover img{transform:scale(1.03)}
.ga-spotlight-body{padding:24px}
.ga-cat{
    display:inline-block;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;font-size:11px;font-weight:700;
    text-transform:uppercase;letter-spacing:.6px;padding:6px 14px;border-radius:50px;margin-bottom:12px
}
.ga-spotlight-title{font-size:22px;font-weight:800;line-height:1.35;margin-bottom:10px}
.ga-spotlight-title a{color:#0f172a;text-decoration:none}
.ga-spotlight-title a:hover{color:#2563eb}
.ga-spotlight-excerpt{font-size:15px;color:#64748b;line-height:1.6;margin-bottom:14px}
.ga-spotlight-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#94a3b8;padding-bottom:12px;border-bottom:1px solid #f1f5f9}
.ga-author{display:flex;align-items:center;gap:8px;font-weight:600;color:#475569}
.ga-avatar{
    width:32px;height:32px;border-radius:50%;
    background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex-shrink:0
}

/* ---------- SECTION BASE ---------- */
.ga-sec{padding:72px 0}
.ga-inner{max-width:1280px;margin:0 auto;padding:0 32px}
.ga-sec-label{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;color:#2563eb;margin-bottom:8px}
.ga-sec-title{font-size:clamp(26px,3.2vw,34px);font-weight:800;color:#0f172a;letter-spacing:-.6px;margin-bottom:20px}
.ga-sec-title span{background:linear-gradient(90deg,#2563eb,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.ga-sec-sub{font-size:16px;color:#64748b;max-width:560px;line-height:1.7;margin-top:8px}
.ga-sec-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:36px;flex-wrap:wrap;gap:16px}
.ga-sec-link{display:inline-flex;align-items:center;gap:6px;color:#2563eb;font-weight:700;font-size:14px;text-decoration:none;border:2px solid #2563eb;padding:10px 22px;border-radius:12px;transition:all .25s;white-space:nowrap}
.ga-sec-link:hover{background:#2563eb;color:#fff}

/* ---------- WHY WRITE ---------- */
.ga-why{background:#f8fafc;border-top:1px solid #eef2f7;border-bottom:1px solid #eef2f7}
.ga-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:12px}
.ga-step{background:#fff;border:1px solid #e8edf3;border-radius:20px;padding:32px 28px;text-align:center;transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;overflow:hidden}
.ga-step::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#2563eb,#7c3aed);opacity:0;transition:opacity .3s}
.ga-step:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(15,23,42,.08);border-color:#bfdbfe}
.ga-step:hover::before{opacity:1}
.ga-step-icon{font-size:40px;margin-bottom:16px}
.ga-step h3{font-size:17px;font-weight:700;color:#0f172a;margin-bottom:8px}
.ga-step p{font-size:14px;color:#64748b;line-height:1.6}

/* ---------- LATEST GRID ---------- */
.ga-latest{background:#fff;border-top:1px solid #eef2f7;border-bottom:1px solid #eef2f7}
.ga-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:36px}
.ga-card{
    background:#fff;border:1px solid #e8edf3;border-radius:20px;overflow:hidden;
    display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s,border-color .3s
}
.ga-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(15,23,42,.1);border-color:#bfdbfe}
.ga-card-img{display:block;width:100%;height:200px;overflow:hidden;background:#f1f5f9}
.ga-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.ga-card:hover .ga-card-img img{transform:scale(1.03)}
.ga-card-img-ph{width:100%;height:200px;background:linear-gradient(135deg,#dbeafe,#ede9fe);display:flex;align-items:center;justify-content:center;font-size:48px;color:#93c5fd}
.ga-card-body{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column}
.ga-card-cat{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:#2563eb;background:#eff6ff;padding:4px 12px;border-radius:50px;width:fit-content;text-decoration:none;margin-bottom:14px;transition:all .2s}
.ga-card-cat:hover{background:#2563eb;color:#fff}
.ga-card-title{font-size:16px;font-weight:700;line-height:1.4;color:#0f172a;margin-bottom:8px}
.ga-card-title a{color:inherit;text-decoration:none;transition:color .2s}
.ga-card-title a:hover{color:#2563eb}
.ga-card-excerpt{font-size:14px;color:#64748b;line-height:1.6;margin-bottom:14px}
.ga-card-foot{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#94a3b8;margin-top:auto}
.ga-card-author{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:#475569}
.ga-card-author .ga-avatar{width:24px;height:24px;font-size:11px}

/* Pagination */
.ga-pagination{display:flex;align-items:center;justify-content:center;margin-top:40px;padding-top:32px;border-top:1px solid #eef2f7}
.ga-page-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:#fff;border:1px solid #e2e8f0;border-radius:12px;font-weight:600;color:#475569;text-decoration:none;transition:all .25s}
.ga-page-btn:hover{background:#2563eb;color:#fff;border-color:#2563eb;transform:translateY(-2px)}
.ga-page-info{font-size:14px;color:#94a3b8;margin:0 20px}

/* ---------- COMMUNITY ---------- */
.ga-community{background:#f8fafc;border-top:1px solid #eef2f7;border-bottom:1px solid #eef2f7;padding:72px 0}
.ga-community-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:start}
.ga-sec-title{font-size:20px;font-weight:700;color:#0f172a;margin-bottom:20px}
.ga-chips{display:flex;flex-wrap:wrap;gap:10px}
.ga-chip{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid #e2e8f0;border-radius:50px;padding:10px 20px;text-decoration:none;transition:all .25s;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.ga-chip:hover{background:#2563eb;border-color:#2563eb;color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,.2)}
.ga-chip:hover .ga-chip-name,.ga-chip:hover .ga-chip-count{color:#fff}
.ga-chip-emoji{font-size:18px}
.ga-chip-name{font-size:14px;font-weight:600;color:#0f172a;transition:color .2s}
.ga-chip-count{font-size:12px;font-weight:600;color:#94a3b8;background:#f1f5f9;padding:2px 10px;border-radius:50px;transition:all .2s}
.ga-chip-empty{color:#94a3b8;font-size:14px}

/* Contributors */
.ga-contributors{}
.ga-author-list{display:flex;flex-direction:column;gap:12px}
.ga-author-link{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #e8edf3;border-radius:16px;padding:16px 20px;text-decoration:none;transition:transform .3s,box-shadow .3s,border-color .3s;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.ga-author-link:hover{transform:translateX(6px);box-shadow:0 12px 32px rgba(15,23,42,.08);border-color:#bfdbfe}
.ga-author-link .ga-avatar{width:40px;height:40px;font-size:14px}
.ga-author-name{font-size:15px;font-weight:600;color:#0f172a}
.ga-author-count{font-size:12px;color:#94a3b8;margin-left:auto;background:#f1f5f9;padding:3px 10px;border-radius:50px}

/* ---------- CTA ---------- */
.ga-cta{
    background:linear-gradient(135deg,#0f172a 0%,#1e3a8a 100%);
    padding:80px 32px;text-align:center
}
.ga-cta-inner{max-width:700px;margin:0 auto}
.ga-cta h2{font-size:clamp(28px,4vw,38px);font-weight:800;letter-spacing:-1px;margin-bottom:16px;color:#fff}
.ga-cta h2 span{background:linear-gradient(90deg,#60a5fa,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.ga-cta p{font-size:16px;color:#cbd5e1;margin-bottom:28px;line-height:1.7}
.ga-newsletter{display:flex;max-width:500px;margin:0 auto 24px;border-radius:14px;overflow:hidden;box-shadow:0 12px 40px rgba(0,0,0,.3)}
.ga-newsletter input{flex:1;padding:16px 20px;border:none;font-size:16px;background:#fff;color:#0f172a;outline:none}
.ga-newsletter input::placeholder{color:#94a3b8}
.ga-newsletter button{padding:16px 28px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;border:none;font-weight:700;font-size:16px;cursor:pointer;transition:opacity .2s;white-space:nowrap}
.ga-newsletter button:hover{opacity:.9}
.ga-cta-links{display:flex;justify-content:center;gap:20px;margin-top:24px;flex-wrap:wrap}
.ga-cta-links a{color:#94a3b8;font-size:14px;text-decoration:none;transition:color .2s}
.ga-cta-links a:hover{color:#fff}
.ga-cta-note{margin-top:20px;font-size:14px;color:#64748b}
.ga-cta-note a{color:#60a5fa;text-decoration:none;transition:color .2s}
.ga-cta-note a:hover{color:#c084fc}

/* ---------- RESPONSIVE ---------- */
@media(max-width:1100px){
    .ga-hero-inner{grid-template-columns:1fr;gap:40px;padding:48px 40px}
    .ga-grid{grid-template-columns:repeat(2,1fr)}
    .ga-community-grid{grid-template-columns:1fr;gap:40px}
}
@media(max-width:768px){
    .ga-hero{margin:24px 16px 0;border-radius:24px}
    .ga-hero-inner{padding:40px 28px}
    .ga-actions{flex-direction:column}
    .ga-btn{justify-content:center}
    .ga-steps{grid-template-columns:1fr}
    .ga-grid{grid-template-columns:1fr}
    .ga-sec{padding:48px 0}
    .ga-inner{padding:0 20px}
    .ga-cta{padding:48px 24px}
    .ga-newsletter{flex-direction:column}
    .ga-newsletter input,.ga-newsletter button{width:100%;border-radius:0}
    .ga-newsletter input:first-child{border-radius:14px 14px 0 0}
    .ga-newsletter button:last-child{border-radius:0 0 14px 14px}
    .ga-community-grid{grid-template-columns:1fr}
    .ga-stats{grid-template-columns:1fr;gap:16px}
}
@media(max-width:520px){
    .ga-hero-inner{padding:32px 20px}
    .ga-title{font-size:clamp(26px,7vw,34px)}
    .ga-stats{grid-template-columns:1fr;gap:16px}
    .ga-stat-num{font-size:26px}
    .ga-spotlight-title{font-size:18px}
    .ga-card-title{font-size:15px}
    .ga-sec-title{font-size:24px}
    .ga-step{padding:24px 20px}
}

/* ---------- ANIMATIONS ---------- */
@keyframes ga-fadeUp{
    from{opacity:0;transform:translateY(20px)}
    to{opacity:1;transform:translateY(0)}
}
.ga-hero{animation:ga-fadeUp .8s ease-out}
.ga-card{animation:ga-fadeUp .6s ease-out both}
.ga-card:nth-child(2){animation-delay:.1s}
.ga-card:nth-child(3){animation-delay:.2s}
.ga-step{animation:ga-fadeUp .6s ease-out both}
.ga-step:nth-child(2){animation-delay:.15s}
.ga-step:nth-child(3){animation-delay:.3s}
.ga-chip{animation:ga-fadeUp .4s ease-out both}
.ga-chip:nth-child(odd){animation-delay:.05s}
.ga-chip:nth-child(even){animation-delay:.1s}
.ga-author-link{animation:ga-fadeUp .5s ease-out both}
.ga-author-link:nth-child(2){animation-delay:.08s}
.ga-author-link:nth-child(3){animation-delay:.16s}
.ga-author-link:nth-child(4){animation-delay:.24s}
.ga-author-link:nth-child(5){animation-delay:.32s}
.ga-author-link:nth-child(6){animation-delay:.4s}

/* ---------- DARK MODE ---------- */
@media(prefers-color-scheme:dark){
    .ga-spotlight{background:#1f2937;color:#f9fafb}
    .ga-spotlight-title a{color:#f9fafb}
    .ga-spotlight-title a:hover{color:#60a5fa}
    .ga-spotlight-excerpt{color:#9ca3af}
    .ga-spotlight-meta{border-color:#374151}
    .ga-spotlight-meta,.ga-author{color:#9ca3af}
    .ga-step{background:#1f2937;border-color:#374151}
    .ga-step h3{color:#f9fafb}
    .ga-step p{color:#9ca3af}
    .ga-card{background:#1f2937;border-color:#374151}
    .ga-card:hover{border-color:#2563eb}
    .ga-card-title{color:#f9fafb}
    .ga-card-title a{color:#f9fafb}
    .ga-card-title a:hover{color:#60a5fa}
    .ga-card-excerpt{color:#9ca3af}
    .ga-card-foot{color:#6b7280}
    .ga-card-author{color:#d1d5db}
    .ga-card-img-ph{background:#1f2937}
    .ga-chip{background:#1f2937;border-color:#374151}
    .ga-chip:hover{background:#2563eb;border-color:#2563eb;color:#fff}
    .ga-chip-name{color:#d1d5db}
    .ga-chip:hover .ga-chip-name{color:#fff}
    .ga-chip-count{background:#374151;color:#9ca3af}
    .ga-author-link{background:#1f2937;border-color:#374151}
    .ga-author-link:hover{border-color:#2563eb}
    .ga-author-name{color:#f9fafb}
    .ga-author-count{background:#374151;color:#9ca3af}
    .ga-page-btn{background:#1f2937;border-color:#374151;color:#d1d5db}
    .ga-page-btn:hover{background:#2563eb;color:#fff;border-color:#2563eb}
    .ga-cta-note{color:#9ca3af}
    .ga-cta-note a{color:#60a5fa}
    .ga-cta-note a:hover{color:#c084fc}
}