/* =====================================================
   CLASS NOTE BD v2 — main.css
   ===================================================== */
:root,html,body{--p:#1a56db;--pd:#1440b0;--pl:#e8f0fe;--s:#0ea5e9;--acc:#f59e0b;--g:#10b981;--r:#ef4444;--pu:#8b5cf6;--bg:#f0f4ff;--card:#fff;--dark:#0f172a;--text:#1e293b;--mut:#64748b;--bdr:#e2e8f0;--fn:'Hind Siliguri',sans-serif;--rad:10px;--radl:16px;--sh:0 4px 16px rgba(0,0,0,.10);--shb:0 4px 20px rgba(26,86,219,.20);--tr:.22s ease}
body.classnotebd-active *{box-sizing:border-box}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}
body{font-family:var(--fn)!important;background:var(--bg)!important;color:var(--text)!important;line-height:1.75;overflow-x:hidden}
a{color:var(--p);text-decoration:none;transition:color var(--tr)}a:hover{color:var(--pd)}
img{max-width:100%;height:auto;display:block}ul,ol{list-style:none}
button{cursor:pointer;font-family:var(--fn);border:none;background:none}
h1,h2,h3,h4{font-weight:700;line-height:1.35;color:var(--text)}
p:last-child{margin-bottom:0}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.sec{padding:52px 0}.sec-sm{padding:36px 0}.sec-white{background:#fff}
.sec-hd{text-align:center;margin-bottom:36px}
.sec-hd .bdg{display:inline-block;background:var(--pl);color:var(--p);font-size:.75rem;font-weight:700;padding:.28rem .85rem;border-radius:999px;margin-bottom:10px}
.sec-hd h2{font-size:clamp(1.4rem,3vw,2rem);margin-bottom:8px}
.sec-hd p{color:var(--mut);font-size:.95rem;max-width:540px;margin:0 auto}
.flex-btwn{display:flex;align-items:center;justify-content:space-between;gap:12px}
/* Buttons */
.btn{display:inline-flex;align-items:center;gap:7px;padding:10px 22px;border-radius:var(--rad);font-size:.92rem;font-weight:600;transition:all var(--tr);white-space:nowrap;font-family:var(--fn)}
.btn-p{background:var(--p);color:#fff;box-shadow:var(--shb)}.btn-p:hover{background:var(--pd);color:#fff;transform:translateY(-1px)}
.btn-w{background:#fff;color:var(--p);box-shadow:var(--sh)}.btn-w:hover{background:var(--pl);color:var(--p)}
.btn-acc{background:var(--acc);color:#fff}.btn-acc:hover{background:#d97706;color:#fff}
.btn-ol{border:1.5px solid var(--p);color:var(--p)}.btn-ol:hover{background:var(--pl)}
.btn-sm{padding:7px 16px;font-size:.83rem}.btn-lg{padding:14px 32px;font-size:1rem;border-radius:var(--radl)}
/* Cards */
.card{background:var(--card);border-radius:var(--radl);border:1px solid var(--bdr);overflow:hidden;transition:transform var(--tr),box-shadow var(--tr)}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh)}

/* ── TOPBAR ── */
.topbar{background:var(--pd);color:rgba(255,255,255,.85);font-size:.76rem;padding:6px 0}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:12px}
.tb-lbl{background:var(--acc);color:#fff;padding:2px 8px;border-radius:4px;font-size:.7rem;font-weight:700;flex-shrink:0}
.ticker-w{overflow:hidden;flex:1}
.ticker{display:flex;gap:48px;animation:tick 28s linear infinite;white-space:nowrap}
.ticker:hover{animation-play-state:paused}
.ticker span{flex-shrink:0}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.tb-links{display:flex;gap:14px;flex-shrink:0}.tb-links a{color:rgba(255,255,255,.7)}.tb-links a:hover{color:#fff}

/* ── HEADER ── */
.site-header{background:#fff;position:sticky;top:0;z-index:1000;height:66px;box-shadow:0 2px 12px rgba(0,0,0,.07)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.site-logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.logo-ic{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--p),var(--s));display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:#fff;font-weight:800;flex-shrink:0}
.logo-name{font-size:1.05rem;font-weight:800;color:var(--p);display:block}
.logo-tag{font-size:.66rem;color:var(--mut);display:block}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:4px;padding:8px 11px;border-radius:6px;font-size:.85rem;font-weight:600;color:var(--text);transition:all var(--tr)}
.nav-link:hover,.nav-link.active{background:var(--pl);color:var(--p)}
.nav-arr{font-size:.6rem;opacity:.6;transition:transform var(--tr)}.nav-item:hover .nav-arr{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 6px);left:0;background:#fff;border:1px solid var(--bdr);border-radius:var(--radl);box-shadow:0 8px 32px rgba(0,0,0,.14);min-width:200px;padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s;z-index:200}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:9px 12px;border-radius:6px;font-size:.85rem;color:var(--text);font-weight:500}
.dropdown a:hover{background:var(--pl);color:var(--p)}
.mega{position:absolute;top:calc(100% + 6px);left:-180px;background:#fff;border:1px solid var(--bdr);border-radius:var(--radl);box-shadow:0 8px 32px rgba(0,0,0,.14);width:600px;padding:20px;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s;z-index:200}
.nav-item:hover .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:.72rem;color:var(--mut);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;padding:0 8px}
.mega-col a{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:6px;font-size:.83rem;color:var(--text);font-weight:500;transition:all var(--tr)}
.mega-col a:hover{background:var(--pl);color:var(--p)}
.cls-bdg{width:26px;height:26px;border-radius:7px;background:var(--pl);color:var(--p);display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;flex-shrink:0}
.hdr-act{display:flex;align-items:center;gap:8px;flex-shrink:0}
.srch-btn{width:34px;height:34px;border-radius:6px;background:var(--bg);border:1px solid var(--bdr);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--tr);font-size:.9rem}
.srch-btn:hover{background:var(--pl);border-color:var(--p)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:6px;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}

/* ── HERO ── */
.hero{background:linear-gradient(135deg,#0f2460 0%,#1a56db 50%,#0ea5e9 100%);padding:64px 0 72px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E")}
.hero-in{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero-bdg{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:.78rem;padding:5px 12px;border-radius:999px;margin-bottom:14px}
.hero h1{color:#fff;font-size:clamp(1.7rem,3.5vw,2.5rem);margin-bottom:14px;line-height:1.3}
.hero h1 span{color:#fbbf24}
.hero p{color:rgba(255,255,255,.85);margin-bottom:26px;line-height:1.8}
.hero-btns{display:flex;gap:10px;flex-wrap:wrap}
.hero-stats{display:flex;gap:22px;margin-top:26px;flex-wrap:wrap}
.h-stat .num{font-size:1.5rem;font-weight:800;color:#fff;display:block}
.h-stat .lbl{font-size:.72rem;color:rgba(255,255,255,.7);display:block}
.hero-card{background:rgba(255,255,255,.12);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:22px}
.hero-card h3{color:#fff;font-size:.95rem;margin-bottom:14px}
.cls-grid-sm{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}
.cls-btn-sm{aspect-ratio:1;border-radius:8px;background:rgba(255,255,255,.15);border:1.5px solid rgba(255,255,255,.2);color:#fff;font-size:.88rem;font-weight:700;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--tr);font-family:var(--fn)}
.cls-btn-sm:hover{background:rgba(255,255,255,.3);transform:scale(1.06)}

/* ── CLASS GRID ── */
.class-cards{display:grid;grid-template-columns:repeat(6,1fr);gap:13px}
.class-card{background:var(--card);border:1.5px solid var(--bdr);border-radius:var(--radl);padding:16px 10px;text-align:center;text-decoration:none;display:block;transition:all var(--tr)}
.class-card:hover{border-color:var(--p);transform:translateY(-4px);box-shadow:var(--shb)}
.class-card.feat{background:linear-gradient(135deg,var(--p),var(--s));border-color:transparent}
.cc-ico{font-size:1.5rem;margin-bottom:6px}
.cc-lbl{font-size:.72rem;color:var(--mut);display:block}
.class-card.feat .cc-lbl{color:rgba(255,255,255,.8)}
.cc-num{font-size:.9rem;font-weight:700;color:var(--text);display:block;margin-top:2px}
.class-card.feat .cc-num{color:#fff}

/* ── EXAM TABS ── */
.exam-tabs{display:flex;gap:6px;border-bottom:2px solid var(--bdr);margin-bottom:24px}
.etab{padding:9px 18px;font-size:.88rem;font-weight:700;color:var(--mut);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px;transition:all var(--tr);font-family:var(--fn);background:none;border-top:none;border-left:none;border-right:none}
.etab.active{color:var(--p);border-bottom-color:var(--p)}
.epanel{display:none}.epanel.active{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.subj-card{background:var(--bg);border:1.5px solid var(--bdr);border-radius:var(--radl);padding:14px;display:flex;align-items:center;gap:12px;text-decoration:none;transition:all var(--tr)}
.subj-card:hover{background:var(--pl);border-color:var(--p);transform:translateX(3px);box-shadow:var(--shb)}
.play-badge{flex-shrink:0;background:var(--p);color:#fff;font-size:.72rem;font-weight:700;padding:5px 12px;border-radius:999px;display:flex;align-items:center;gap:4px;white-space:nowrap}
.subj-card:hover .play-badge{background:var(--pd)}
.f-cls-block{animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.subj-ic{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.subj-nm{font-size:.9rem;font-weight:700;color:var(--text);display:block;margin-bottom:3px}
.subj-cnt{font-size:.76rem;color:var(--mut)}

/* ── COUNTDOWN ── */
.cd-sec{background:linear-gradient(135deg,var(--dark),#1e3a5f);padding:52px 0;position:relative;overflow:hidden}
.cd-sec::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;background:radial-gradient(circle,rgba(26,86,219,.2),transparent 60%)}
.cd-inner{position:relative;z-index:1;text-align:center}
.cd-inner h2{color:#fff;font-size:clamp(1.4rem,3vw,2rem);margin-bottom:8px}
.cd-inner>p{color:rgba(255,255,255,.7);margin-bottom:28px}
.cd-exam-btns{display:flex;justify-content:center;gap:10px;margin-bottom:28px;flex-wrap:wrap}
.cd-ebtn{padding:8px 20px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);font-size:.86rem;font-weight:600;cursor:pointer;transition:all var(--tr);font-family:var(--fn)}
.cd-ebtn.active,.cd-ebtn:hover{background:var(--p);border-color:var(--p);color:#fff}
.cd-boxes{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.cd-box{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:16px;padding:18px 24px;min-width:90px;text-align:center}
.cd-num{font-size:2.4rem;font-weight:800;color:#fff;display:block;line-height:1;font-family:'Inter',monospace}
.cd-lbl{font-size:.72rem;color:rgba(255,255,255,.6);display:block;margin-top:5px}
.cd-name{margin-top:14px;color:rgba(255,255,255,.7);font-size:.88rem}

/* ── QUIZ ── */
.quiz-card{background:linear-gradient(135deg,var(--p),var(--s));border-radius:20px;padding:36px;color:#fff;position:relative;overflow:hidden;max-width:720px;margin:0 auto}
.quiz-card::after{content:'?';position:absolute;right:-10px;bottom:-20px;font-size:11rem;font-weight:900;color:rgba(255,255,255,.07);line-height:1}
.quiz-in{position:relative;z-index:1}
.q-meta{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.q-bdg{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.3);padding:4px 12px;border-radius:999px;font-size:.75rem;font-weight:700}
.q-timer-bar{height:4px;background:rgba(255,255,255,.2);border-radius:2px;margin-bottom:16px;overflow:hidden}
.q-timer-fill{height:100%;background:#fbbf24;border-radius:2px;transition:width 1s linear}
.q-txt{font-size:1.15rem;font-weight:700;margin-bottom:22px;line-height:1.6}
.q-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.q-opt{background:rgba(255,255,255,.12);border:2px solid rgba(255,255,255,.2);border-radius:var(--rad);padding:11px 15px;font-size:.88rem;font-weight:500;cursor:pointer;transition:all var(--tr);text-align:left;color:#fff;font-family:var(--fn)}
.q-opt:hover:not(:disabled){background:rgba(255,255,255,.25);border-color:rgba(255,255,255,.5)}
.q-opt.correct{background:rgba(16,185,129,.3);border-color:#10b981}
.q-opt.wrong{background:rgba(239,68,68,.25);border-color:#ef4444}
.q-opt:disabled{cursor:default}
.q-exp{display:none;margin-top:12px;background:rgba(255,255,255,.1);border-radius:8px;padding:12px;font-size:.86rem;line-height:1.7}
.q-score{display:flex;gap:20px;background:rgba(255,255,255,.1);border-radius:10px;padding:12px 16px;margin-bottom:16px}
.qs-itm{text-align:center}
.qs-num{font-size:1.3rem;font-weight:800;color:#fff;display:block}
.qs-lbl{font-size:.7rem;color:rgba(255,255,255,.7)}

/* ── PRACTICE ── */
.prac-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.prac-card{border-radius:16px;padding:22px;text-align:center;cursor:pointer;transition:all var(--tr);display:block;text-decoration:none}
.prac-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.18)}
.pc-ico{font-size:2.2rem;margin-bottom:10px}
.pc-ti{font-size:.95rem;font-weight:700;margin-bottom:5px}
.pc-ds{font-size:.8rem;opacity:.85;margin-bottom:14px;line-height:1.6}
.pc-ct{display:inline-block;font-size:.72rem;font-weight:700;padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.25)}
.pc-bl{background:linear-gradient(135deg,#1a56db,#0ea5e9);color:#fff}
.pc-gr{background:linear-gradient(135deg,#059669,#10b981);color:#fff}
.pc-pu{background:linear-gradient(135deg,#7c3aed,#a78bfa);color:#fff}
.pc-or{background:linear-gradient(135deg,#d97706,#f59e0b);color:#fff}
.pc-re{background:linear-gradient(135deg,#dc2626,#ef4444);color:#fff}
.pc-te{background:linear-gradient(135deg,#0f766e,#14b8a6);color:#fff}

/* ── TOOLS ── */
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tool-card{background:var(--card);border:1.5px solid var(--bdr);border-radius:16px;padding:18px;cursor:pointer;transition:all var(--tr);text-align:center}
.tool-card:hover{border-color:var(--p);background:var(--pl);transform:translateY(-3px);box-shadow:var(--shb)}
.tool-ic{font-size:1.8rem;margin-bottom:8px}
.tool-nm{font-size:.9rem;font-weight:700;color:var(--text);margin-bottom:4px}
.tool-ds{font-size:.76rem;color:var(--mut)}

/* ── FORMULAS ── */
.f-cls-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.f-cls-tab{padding:8px 16px;border-radius:999px;font-size:.82rem;font-weight:700;cursor:pointer;border:1.5px solid var(--bdr);color:var(--mut);background:var(--card);transition:all var(--tr);font-family:var(--fn)}
.f-cls-tab.active{background:var(--p);border-color:var(--p);color:#fff}
.f-sub-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.f-sub-tab{padding:6px 14px;border-radius:6px;font-size:.8rem;font-weight:600;cursor:pointer;border:1px solid var(--bdr);color:var(--mut);background:var(--bg);transition:all var(--tr);font-family:var(--fn)}
.f-sub-tab.active{color:#fff}
.f-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.f-card{background:var(--card);border:1px solid var(--bdr);border-radius:12px;padding:15px;transition:all var(--tr)}
.f-card:hover{border-color:var(--p);box-shadow:var(--shb)}
.f-title{font-size:.84rem;font-weight:700;color:var(--text);margin-bottom:8px}
.f-formula{font-size:.88rem;font-weight:600;padding:8px 12px;border-radius:8px;margin-bottom:6px;font-family:'Inter',monospace;word-break:break-word;line-height:1.5}
.f-ex{font-size:.76rem;color:var(--mut);line-height:1.5}

/* ── CALENDAR ── */
.cal-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cal-card{background:var(--card);border-radius:20px;border:1px solid var(--bdr);overflow:hidden}
.cal-head{padding:16px 20px}.cal-head h3{color:#fff}
.cal-ev{display:flex;align-items:center;gap:12px;padding:13px 18px;border-bottom:1px solid var(--bdr);transition:background var(--tr)}
.cal-ev:last-child{border-bottom:none}.cal-ev:hover{background:var(--pl)}
.cal-dt{min-width:48px;text-align:center;background:var(--pl);border-radius:6px;padding:5px 4px}
.cal-d{font-size:1.15rem;font-weight:800;color:var(--p);display:block;line-height:1}
.cal-m{font-size:.65rem;color:var(--mut);display:block}
.cal-ti{font-size:.86rem;font-weight:600;color:var(--text);display:block;margin-bottom:3px}
.cal-tp{font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:999px;display:inline-block}
.tp-ex{background:rgba(239,68,68,.1);color:var(--r)}
.tp-ho{background:rgba(16,185,129,.1);color:var(--g)}
.tp-ev{background:rgba(245,158,11,.1);color:var(--acc)}

/* ── LEADERBOARD ── */
.lb-layout{display:grid;grid-template-columns:1fr 2fr;gap:22px}
.lb-card{background:var(--card);border-radius:20px;border:1px solid var(--bdr);overflow:hidden}
.lb-head{padding:15px 18px}.lb-head h3{color:#fff}
.lb-item{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--bdr);transition:background var(--tr)}
.lb-item:last-child{border-bottom:none}.lb-item:hover{background:var(--bg)}
.lb-rk{width:28px;text-align:center;font-size:.85rem;font-weight:800;color:var(--mut);flex-shrink:0}
.lb-av{width:34px;height:34px;border-radius:50%;background:var(--pl);color:var(--p);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;flex-shrink:0}
.lb-nm{flex:1;font-size:.87rem;font-weight:600}
.lb-sc{font-size:.82rem;font-weight:700;color:var(--p)}

/* ══════════════════════════════════
   BLOG POSTS & PAGINATION
   ══════════════════════════════════ */
.posts-section{padding:52px 0}
.posts-layout{display:grid;grid-template-columns:2fr 1fr;gap:28px;align-items:start}
.posts-list{display:flex;flex-direction:column;gap:24px}
/* Post card */
.post-card{background:var(--card);border:1px solid var(--bdr);border-radius:var(--radl);overflow:hidden;display:flex;transition:all var(--tr)}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh);border-color:var(--p)}
.post-thumb{width:220px;flex-shrink:0}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post-no-img{width:100%;height:100%;min-height:150px;background:linear-gradient(135deg,var(--pl),#dbeafe);display:flex;align-items:center;justify-content:center;font-size:2.5rem}
.post-body{padding:20px;flex:1;min-width:0}
.post-cat{display:inline-block;font-size:.7rem;font-weight:700;padding:3px 10px;border-radius:999px;background:var(--pl);color:var(--p);margin-bottom:8px;text-transform:uppercase;letter-spacing:.04em;text-decoration:none}
.post-cat:hover{background:var(--p);color:#fff}
.post-title{font-size:1.05rem;margin-bottom:8px;line-height:1.5}
.post-title a{color:var(--text)}.post-title a:hover{color:var(--p)}
.post-excerpt{font-size:.86rem;color:var(--mut);line-height:1.7;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;gap:14px;font-size:.76rem;color:var(--mut);flex-wrap:wrap}
.post-meta span{display:flex;align-items:center;gap:4px}
.read-more{display:inline-flex;align-items:center;gap:5px;font-size:.82rem;font-weight:700;color:var(--p);margin-top:10px;text-decoration:none}
.read-more:hover{gap:8px;color:var(--pd)}
/* ★ PAGINATION ★ */
.cnbd-pagination{margin-top:32px;padding-top:24px;border-top:1px solid var(--bdr)}
.page-numbers-wrap{display:flex;justify-content:center;align-items:center;gap:6px;flex-wrap:wrap}
.page-num{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;border-radius:var(--rad);background:var(--card);border:1px solid var(--bdr);font-size:.88rem;font-weight:600;color:var(--text);text-decoration:none;transition:all var(--tr);padding:0 8px}
.page-num:hover,.page-num.current{background:var(--p);color:#fff;border-color:var(--p)}
.page-num.dots{background:none;border:none;cursor:default;min-width:auto}
.page-num.prev,.page-num.next{padding:0 16px}

/* ── SIDEBAR ── */
.sidebar{position:sticky;top:86px;display:flex;flex-direction:column;gap:20px}
.sidebar-widget{background:var(--card);border-radius:var(--radl);border:1px solid var(--bdr);overflow:hidden}
.widget-head{padding:14px 18px;background:var(--p)}
.widget-head h3{font-size:.9rem;color:#fff}
.widget-body{padding:16px}
.sidebar-post{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid var(--bdr);text-decoration:none}
.sidebar-post:last-child{border-bottom:none;padding-bottom:0}
.sidebar-post img{width:60px;height:60px;object-fit:cover;border-radius:6px;flex-shrink:0}
.sp-no-img{width:60px;height:60px;border-radius:6px;background:var(--pl);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0}
.sp-title{font-size:.82rem;font-weight:600;color:var(--text);display:block;line-height:1.4;margin-bottom:4px}
.sp-title:hover{color:var(--p)}
.sp-date{font-size:.72rem;color:var(--mut)}
/* CD widget */
.cd-widget-wrap{padding:16px;text-align:center}
.cd-w-boxes{display:flex;justify-content:center;gap:8px;margin:12px 0}
.cd-w-box{background:var(--pl);border-radius:8px;padding:8px 10px;min-width:52px;text-align:center}
.cd-w-num{font-size:1.3rem;font-weight:800;color:var(--p);display:block;line-height:1;font-family:'Inter',monospace}
.cd-w-lbl{font-size:.62rem;color:var(--mut);display:block;margin-top:2px}
/* mini quiz */
.mini-quiz{padding:16px}
.mq-q{font-size:.88rem;font-weight:600;margin-bottom:12px;line-height:1.5}
.mq-opts{display:flex;flex-direction:column;gap:7px}
.mq-opt{padding:8px 12px;border-radius:6px;border:1.5px solid var(--bdr);background:var(--bg);font-size:.82rem;cursor:pointer;text-align:left;font-family:var(--fn);transition:all var(--tr)}
.mq-opt:hover{border-color:var(--p);background:var(--pl)}
.mq-opt.correct{background:#dcfce7;border-color:#16a34a;color:#16a34a;font-weight:700}
.mq-opt.wrong{background:#fee2e2;border-color:#ef4444;color:#ef4444}

/* ── SINGLE POST ── */
.single-hero-sec{background:#fff;padding:40px 0 28px;border-bottom:1px solid var(--bdr)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--mut);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:var(--p)}
.single-title{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:16px;line-height:1.4}
.single-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:.82rem;color:var(--mut);align-items:center}
.single-layout{display:grid;grid-template-columns:1fr 320px;gap:28px;padding:40px 0;align-items:start}
.post-content{background:#fff;border-radius:var(--radl);padding:32px;border:1px solid var(--bdr)}
.post-content h2,.post-content h3,.post-content h4{margin:24px 0 12px}
.post-content p{color:var(--text);line-height:1.9;margin-bottom:16px}
.post-content ul{list-style:disc;margin:12px 0 16px 20px}
.post-content ol{list-style:decimal;margin:12px 0 16px 20px}
.post-content li{margin-bottom:8px;line-height:1.7}
.post-content img{border-radius:var(--rad);margin:20px 0;width:100%}
.post-content blockquote{border-left:4px solid var(--p);background:var(--pl);padding:16px 20px;border-radius:0 var(--rad) var(--rad) 0;margin:20px 0;font-style:italic;color:var(--pd)}
.post-share{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:24px;padding-top:20px;border-top:1px solid var(--bdr)}
/* Related */
.related-sec{padding:36px 0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{background:var(--card);border:1px solid var(--bdr);border-radius:var(--radl);overflow:hidden;text-decoration:none;transition:all var(--tr);display:block}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh);border-color:var(--p)}
.rel-card img{width:100%;height:160px;object-fit:cover}
.rel-no-img{width:100%;height:160px;background:var(--pl);display:flex;align-items:center;justify-content:center;font-size:2rem}
.rel-body{padding:14px}
.rel-cat{font-size:.7rem;font-weight:700;color:var(--p);text-transform:uppercase;display:block;margin-bottom:5px}
.rel-title{font-size:.92rem;font-weight:700;color:var(--text);display:block;line-height:1.5;margin-bottom:6px}
.rel-date{font-size:.74rem;color:var(--mut)}

/* ── ARCHIVE ── */
.arch-hero{background:linear-gradient(135deg,var(--p),var(--s));padding:36px 0}
.arch-hero h1{color:#fff;font-size:1.8rem;margin-bottom:6px}
.arch-hero p{color:rgba(255,255,255,.8)}
.arch-layout{display:grid;grid-template-columns:1fr 320px;gap:28px;padding:36px 0;align-items:start}
.arch-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.arch-card{background:var(--card);border:1px solid var(--bdr);border-radius:var(--radl);overflow:hidden;text-decoration:none;display:block;transition:all var(--tr)}
.arch-card:hover{transform:translateY(-3px);box-shadow:var(--sh);border-color:var(--p)}
.arch-card img{width:100%;height:170px;object-fit:cover}
.arch-no-img{width:100%;height:170px;background:linear-gradient(135deg,var(--pl),#dbeafe);display:flex;align-items:center;justify-content:center;font-size:2.5rem}
.arch-body{padding:14px}
.arch-cat{font-size:.7rem;font-weight:700;color:var(--p);text-transform:uppercase;display:block;margin-bottom:5px}
.arch-title{font-size:.95rem;font-weight:700;color:var(--text);display:block;margin-bottom:7px;line-height:1.5}
.arch-exc{font-size:.82rem;color:var(--mut);line-height:1.6;display:block;margin-bottom:8px}
.arch-date{font-size:.74rem;color:var(--mut)}

/* ── SEARCH OVERLAY ── */
.srch-ov{position:fixed;inset:0;background:rgba(15,23,42,.85);backdrop-filter:blur(6px);z-index:9999;display:flex;align-items:flex-start;justify-content:center;padding-top:90px;opacity:0;visibility:hidden;transition:all .25s}
.srch-ov.open{opacity:1;visibility:visible}
.srch-box{background:#fff;border-radius:20px;padding:22px;width:90%;max-width:580px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.srch-row{display:flex;align-items:center;gap:10px;border-bottom:2px solid var(--p);padding-bottom:10px}
.srch-row input{flex:1;border:none;outline:none;font-size:1.15rem;font-family:var(--fn);color:var(--text)}
.srch-shorts{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}
.srch-short{padding:5px 13px;border-radius:999px;background:var(--pl);color:var(--p);font-size:.79rem;font-weight:600;cursor:pointer;transition:all var(--tr)}
.srch-short:hover{background:var(--p);color:#fff}

/* ── TOOL MODAL ── */
.modal-ov{position:fixed;inset:0;background:rgba(15,23,42,.8);z-index:9999;display:none;align-items:center;justify-content:center;padding:20px}
.modal-ov.open{display:flex}
.modal-box{background:#fff;border-radius:20px;width:100%;max-width:620px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal-hd{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--bdr);position:sticky;top:0;background:#fff;z-index:1}
.modal-hd h3{font-size:1.05rem}
.modal-cls{width:30px;height:30px;border-radius:50%;background:var(--bg);border:1px solid var(--bdr);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:.95rem;color:var(--mut);flex-shrink:0}
.modal-bd{padding:22px}
.tool-inp{width:100%;padding:10px 14px;border:1.5px solid var(--bdr);border-radius:var(--rad);font-size:.92rem;font-family:var(--fn);outline:none;transition:border var(--tr);background:#fff}
.tool-inp:focus{border-color:var(--p)}
.tool-res{background:var(--pl);border:1px solid var(--p);border-radius:12px;padding:14px;margin-top:14px;font-size:.92rem;line-height:1.8}
.tool-lbl{font-size:.79rem;font-weight:700;color:var(--mut);margin-bottom:5px}
.t-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
select.tool-inp{cursor:pointer;background:#fff}

/* ── MOBILE MENU ── */
.mob-menu{position:fixed;inset:0;background:#fff;z-index:9998;transform:translateX(-100%);transition:transform .3s;overflow-y:auto;padding:18px}
.mob-menu.open{transform:translateX(0)}
.mob-hd{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.mob-cls-btn{font-size:1.4rem;cursor:pointer}
.mob-cls-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:5px}
.mob-cls-a{aspect-ratio:1;border-radius:7px;background:#fff;border:1px solid var(--bdr);display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:700;color:var(--text);text-decoration:none}
.mob-nav a{display:block;padding:12px 0;border-bottom:1px solid var(--bdr);font-size:.95rem;font-weight:600;color:var(--text)}
.mob-nav a:hover{color:var(--p)}
.mob-ov{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:9997;display:none}

/* ── NEWSLETTER ── */
.nl-sec{background:linear-gradient(135deg,var(--p),var(--s));padding:48px 0}
.nl-inner{text-align:center;max-width:500px;margin:0 auto}
.nl-inner h2{color:#fff;margin-bottom:10px}
.nl-inner p{color:rgba(255,255,255,.85);margin-bottom:22px}
.nl-form{display:flex;gap:8px}
.nl-inp{flex:1;padding:11px 16px;background:rgba(255,255,255,.15);border:1.5px solid rgba(255,255,255,.3);border-radius:var(--rad);color:#fff;font-size:.88rem;font-family:var(--fn);outline:none}
.nl-inp::placeholder{color:rgba(255,255,255,.6)}
.nl-inp:focus{border-color:rgba(255,255,255,.7)}

/* ── FOOTER ── */
.site-footer{background:var(--dark);padding:52px 0 0}
.ftr-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:28px;margin-bottom:36px}
.ftr-about p{font-size:.83rem;color:rgba(255,255,255,.5);line-height:1.8;margin:12px 0 18px}
.ftr-social{display:flex;gap:8px}
.soc-a{width:34px;height:34px;border-radius:6px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.6);text-decoration:none;transition:all var(--tr)}
.soc-a:hover{background:var(--p);border-color:var(--p);color:#fff}
.ftr-col h4{font-size:.82rem;font-weight:700;color:#fff;margin-bottom:14px;text-transform:uppercase;letter-spacing:.05em}
.ftr-col li{margin-bottom:7px}
.ftr-col a{font-size:.83rem;color:rgba(255,255,255,.5);transition:color var(--tr)}
.ftr-col a:hover{color:rgba(255,255,255,.9)}
.ftr-bottom{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;display:flex;align-items:center;justify-content:space-between}
.ftr-bottom p{font-size:.8rem;color:rgba(255,255,255,.4)}

/* ── SCROLL TOP ── */
#scroll-top{position:fixed;bottom:24px;right:24px;width:42px;height:42px;border-radius:50%;background:var(--p);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:var(--shb);opacity:0;visibility:hidden;cursor:pointer;transition:all var(--tr);z-index:500;border:none}
#scroll-top.show{opacity:1;visibility:visible}
#scroll-top:hover{transform:translateY(-3px);background:var(--pd)}

/* ── 404 ── */
.err-404{min-height:65vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px}
.err-num{font-size:6rem;font-weight:900;color:var(--p);line-height:1}

/* ── RESPONSIVE ── */
@media(max-width:1024px){
  .tools-grid{grid-template-columns:repeat(3,1fr)}
  .mega{width:460px;grid-template-columns:repeat(3,1fr)}
  .ftr-grid{grid-template-columns:1fr 1fr;gap:24px}
  .hero-in{grid-template-columns:1fr}.hero-card{display:none}
  .lb-layout{grid-template-columns:1fr}
  .single-layout,.arch-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .posts-layout{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .main-nav,.hdr-act .btn-p{display:none}
  .hamburger{display:flex}
  .tb-links{display:none}
  .class-cards{grid-template-columns:repeat(4,1fr)}
  .epanel.active{grid-template-columns:1fr}
  .q-opts{grid-template-columns:1fr}
  .prac-grid{grid-template-columns:1fr 1fr}
  .cal-grid{grid-template-columns:1fr}
  .tools-grid{grid-template-columns:1fr 1fr}
  .arch-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr 1fr}
  .nl-form{flex-direction:column}
  .ftr-grid{grid-template-columns:1fr;gap:20px}
  .ftr-bottom{flex-direction:column;gap:8px;text-align:center}
  .post-card{flex-direction:column}.post-thumb{width:100%}
  .post-thumb img{height:200px}
  .cd-num{font-size:1.9rem}.cd-box{min-width:70px;padding:13px 14px}
  .f-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .class-cards{grid-template-columns:repeat(3,1fr)}
  .prac-grid,.tools-grid{grid-template-columns:1fr}
  .cd-boxes{gap:8px}.t-grid{grid-template-columns:1fr}
}