@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
    --bg-page:#0d1117;--bg-card:#161b22;--bg-card-hover:#1c2129;--bg-input:#0d1117;
    --border:#30363d;--text-primary:#e6edf3;--text-secondary:#8b949e;--text-muted:#6e7681;
    --accent:#5eead4;--accent-dk:#2dd4bf;--accent-bg:rgba(94,234,212,.08);--accent-bd:rgba(94,234,212,.18);
    --accent-green:#3fb950;--accent-red:#f85149;--accent-blue:#58a6ff;--accent-yellow:#d29922;--accent-purple:#bc8cff;
    --font-sans:'Inter',-apple-system,sans-serif;--font-mono:'JetBrains Mono',monospace;
    --radius:12px;--radius-sm:8px;--shadow:0 2px 8px rgba(0,0,0,.3);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font-sans);background:var(--bg-page);color:var(--text-primary);line-height:1.6;min-height:100vh}
.main{max-width:1000px;margin:0 auto;padding:0 32px}

/* ═══ HEADER ═══ */
.header{border-bottom:1px solid var(--border);padding:14px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;opacity:0;pointer-events:none;height:0;overflow:hidden;transition:all .5s ease}
.calculated .header{opacity:1;pointer-events:all;height:auto;padding:14px 0;position:sticky;top:0;z-index:100;background:var(--bg-page)}
.header-logo{font-family:var(--font-mono);font-size:1rem;font-weight:700}
.header-logo span{color:var(--accent)}
.header-badge{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;background:var(--accent);color:var(--bg-page);padding:2px 7px;border-radius:4px;margin-left:8px}
.header-right{display:flex;align-items:center;gap:8px}
.header-search{background:var(--bg-input);border:1px solid var(--border);color:var(--text-primary);font-family:var(--font-sans);font-size:.8rem;padding:6px 12px;border-radius:6px;width:180px;outline:none;transition:border-color .15s}
.header-search:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(94,234,212,.15)}
.header-search::placeholder{color:var(--text-muted)}
.header-btn{background:var(--accent);border:none;color:var(--bg-page);font-family:var(--font-sans);font-size:.75rem;font-weight:700;padding:6px 14px;border-radius:6px;cursor:pointer;transition:all .2s}
.header-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}

/* ═══ HERO ═══ */
.hero{display:flex;align-items:center;justify-content:center;min-height:90vh;transition:all .4s ease}
.hero-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:48px 40px;width:100%;max-width:520px;transition:transform .15s ease-out,opacity .4s ease,box-shadow .3s ease}
.hero-box.loading-state{pointer-events:none}
.hero-box.loading-state .hero-form,.hero-box.loading-state .hero-hint,.hero-box.loading-state .subtitle{opacity:.3}
.hero-box.loading-state .hero-loader{display:flex}
.hero-loader{display:none;align-items:center;gap:10px;margin-top:12px;font-size:.78rem;color:var(--text-secondary)}
.hero-loader .spinner{width:20px;height:20px;border-width:2px}
.hero-box h1{font-size:2.2rem;font-weight:800;margin-bottom:4px;text-align:left}
.hero-box h1 span{color:var(--accent)}
.hero-box .subtitle{color:var(--text-secondary);font-size:.88rem;margin-bottom:24px;text-align:left;transition:opacity .3s}
.hero-form{display:flex;gap:10px;margin-bottom:12px;width:100%;transition:opacity .3s}
.hero-input{background:var(--bg-input);border:1px solid var(--border);color:var(--text-primary);font-family:var(--font-sans);font-size:1rem;padding:12px 20px;border-radius:var(--radius-sm);flex:1;outline:none;transition:border-color .15s}
.hero-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(94,234,212,.12)}
.hero-input::placeholder{color:var(--text-muted)}
.hero-btn{background:var(--accent);border:none;color:var(--bg-page);font-family:var(--font-sans);font-size:.88rem;font-weight:700;padding:12px 24px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s;flex-shrink:0}
.hero-btn:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 4px 16px rgba(94,234,212,.3)}
.hero-hint{color:var(--text-muted);font-size:.68rem;text-align:left;transition:opacity .3s}
.hero.fade-out .hero-box{opacity:0;transform:scale(.92) translateY(-30px);transition:all .35s cubic-bezier(.4,0,.2,1)}
.profile-bar.morphing{opacity:0;transform:translateY(40px) scale(1.05);transition:none}
.profile-bar.morph-in{opacity:1;transform:translateY(0) scale(1);transition:transform .45s cubic-bezier(.4,0,.2,1),opacity .35s ease}
.calculated .hero{display:none}

/* ═══ LOADING FALLBACK ═══ */
.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes fadeSlideUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}

/* ═══ ERROR ═══ */
.error-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:30vh;text-align:center;gap:10px;padding:40px 24px}
.error-state-icon{font-size:2rem}
.error-state-title{font-size:.95rem;font-weight:600;color:var(--text-primary)}
.error-state-msg{font-size:.8rem;color:var(--text-secondary);max-width:360px}

/* ═══ DASHBOARD ═══ */
.dashboard{display:none}
.calculated .dashboard{display:block;animation:fadeSlideUp .5s ease forwards}

/* ═══ PROFILE BAR (horizontal, topo) ═══ */
.profile-bar{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;position:sticky;top:52px;z-index:90;transition:transform .4s cubic-bezier(.4,0,.2,1),opacity .4s ease}
.profile-bar-avatar{width:48px;height:48px;border-radius:50%;border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:var(--bg-page);overflow:hidden;background:var(--accent-dk);flex-shrink:0}
.profile-bar-avatar img{width:100%;height:100%;object-fit:cover}
.profile-bar-info{flex:1;min-width:150px}
.profile-bar-name{font-size:.92rem;font-weight:700}
.profile-bar-username{font-size:.72rem;color:var(--accent)}
.profile-bar-verified{display:inline-block;background:var(--accent-blue);color:#fff;font-size:.5rem;padding:1px 5px;border-radius:6px;margin-left:4px;vertical-align:middle;font-weight:700}
.profile-bar-tier{font-size:.55rem;font-weight:700;padding:2px 8px;border-radius:10px;text-transform:uppercase;letter-spacing:.04em;display:inline-block;margin-top:2px}
.profile-bar-stats{display:flex;gap:20px;margin-left:auto}
.profile-bar-stat{text-align:center}
.profile-bar-stat-val{font-family:var(--font-mono);font-size:.88rem;font-weight:700}
.profile-bar-stat-lbl{font-size:.5rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;font-weight:600}

/* ═══ STATUS ═══ */
.status-bar{font-size:.68rem;color:var(--accent-green);margin-bottom:16px;padding:8px 14px;background:rgba(63,185,80,.06);border:1px solid rgba(63,185,80,.15);border-radius:var(--radius-sm)}

/* ═══ NAV TABS ═══ */
.nav{display:flex;gap:2px;padding:0 0 12px;border-bottom:1px solid var(--border);margin-bottom:20px}
.nav-btn{background:none;border:none;color:var(--text-muted);font-family:var(--font-sans);font-size:.75rem;font-weight:500;padding:7px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s}
.nav-btn:hover{color:var(--text-primary);background:var(--bg-card)}
.nav-btn.active{color:var(--accent);background:var(--accent-bg);font-weight:600}

/* ═══ SECTIONS ═══ */
.section{display:none}
.section.active{display:block}
.section-title{font-size:.95rem;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.section-title::before{content:'';width:3px;height:16px;background:var(--accent);border-radius:2px}

/* ═══ KPI ═══ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.kpi-card{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius);padding:16px 18px;transition:all .2s}
.kpi-card:hover{background:var(--bg-card-hover);transform:translateY(-1px);box-shadow:var(--shadow)}
.kpi-label{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:4px}
.kpi-value{font-family:var(--font-mono);font-size:1.3rem;font-weight:700;line-height:1.2}

/* ═══ INSIGHTS ═══ */
.insight-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.insight-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;text-align:center;transition:all .15s}
.insight-card:hover{border-color:var(--accent-bd)}
.insight-value{font-family:var(--font-mono);font-size:1rem;font-weight:700;color:var(--accent)}
.insight-label{font-size:.55rem;font-weight:700;color:var(--text-secondary);margin-top:3px;text-transform:uppercase;letter-spacing:.06em}

/* ═══ BEST TIME ═══ */
.best-time-card{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius);padding:18px 22px;margin-bottom:20px;display:flex;gap:28px;flex-wrap:wrap}
.best-time-item{flex:1;min-width:120px}
.best-time-label{font-size:.55rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:2px}
.best-time-value{font-family:var(--font-mono);font-size:1.15rem;font-weight:800;color:var(--accent)}
.best-time-sub{font-size:.65rem;color:var(--text-secondary);margin-top:2px}

/* ═══ CARDS & CHARTS ═══ */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.card-title{font-size:.78rem;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:6px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
.chart-container{position:relative;height:380px}
.chart-container-sm{position:relative;height:260px}

/* ═══ POST CARDS ═══ */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
.posts-note{font-size:.68rem;color:var(--text-muted);margin-bottom:14px}
.post-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .25s ease}
.post-card:hover{border-color:var(--accent-bd);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.3)}
.post-card-img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;background:var(--bg-input)}
.post-card-body{padding:10px 12px}
.post-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.post-card-date{font-size:.65rem;color:var(--text-muted)}
.post-card-type{font-size:.55rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:2px 6px;border-radius:4px}
.post-card-type.image{background:rgba(94,234,212,.12);color:var(--accent)}
.post-card-type.video{background:rgba(88,166,255,.12);color:var(--accent-blue)}
.post-card-type.carousel{background:rgba(188,140,255,.12);color:var(--accent-purple)}
.post-card-caption{font-size:.72rem;color:var(--text-secondary);line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card-metrics{display:flex;gap:16px;padding-top:10px;border-top:1px solid var(--border)}
.post-card-metric-value{font-family:var(--font-mono);font-weight:700;font-size:.78rem;color:var(--text-primary)}
.post-card-metric-label{font-size:.5rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);font-weight:600}
.post-card-footer{margin-top:8px}
.post-link{color:var(--accent);text-decoration:none;font-size:.65rem;transition:color .15s}
.post-link:hover{text-decoration:underline;color:#99f6e4}

/* ═══ POSTS PAGER ═══ */
.posts-pager{display:flex;align-items:center;justify-content:center;gap:8px;padding:16px 0}
.posts-pager-btn{background:none;border:1px solid var(--border);color:var(--text-muted);font-family:var(--font-sans);font-size:.72rem;font-weight:600;padding:6px 14px;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s}
.posts-pager-btn:hover{border-color:var(--accent);color:var(--text-primary)}
.posts-pager-btn:disabled{opacity:.3;cursor:default}
.posts-pager-btn:disabled:hover{border-color:var(--border);color:var(--text-muted)}
.posts-pager-info{font-size:.68rem;color:var(--text-muted);min-width:100px;text-align:center}

/* ═══ FOOTER ═══ */
.footer{border-top:1px solid var(--border);padding:18px 0;text-align:center;font-size:.7rem;color:var(--text-muted);margin-top:32px;display:none}
.calculated .footer{display:block}

/* ═══ SCROLLBAR ═══ */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-page)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* ═══ RESPONSIVE ═══ */
@media(max-width:1024px){.kpi-grid,.insight-grid{grid-template-columns:repeat(2,1fr)}.grid-2,.grid-3{grid-template-columns:1fr}.posts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){
    .main{padding:0 16px}
    .hero-box{padding:32px 24px}
    .hero-box h1{font-size:1.8rem}
    .profile-bar{flex-direction:column;align-items:flex-start}
    .profile-bar-stats{margin-left:0}
    .posts-grid{grid-template-columns:1fr}
    .profile-bar{position:relative;top:0}
    .best-time-card{flex-direction:column;gap:12px}
}
@media(max-width:480px){
    .hero-form{flex-direction:column}
    .hero-input{width:100%}
    .kpi-grid{grid-template-columns:1fr 1fr}
    .insight-grid{grid-template-columns:1fr 1fr}
}