/* ══════════════════════════════════════════
   Security365 Landing Page — style.css
   ══════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Be+Vietnam+Pro:wght@400;500;600;700;800;900&display=swap');

:root{--bg:#050a18;--bg2:#0a1128;--card:#0d1632;--card-hover:#111d40;--cyan:#00e5ff;--blue:#3d7aed;--purple:#a855f7;--pink:#ec4899;--orange:#f59e0b;--green:#22c55e;--red:#ef4444;--text:#f0f4ff;--text2:#a3b3d6;--text3:#5a6d94;--border:rgba(61,122,237,.15);--glow:rgba(0,229,255,.08);--radius:16px;}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Be Vietnam Pro',sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:hidden;}

.bg-mesh{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.bg-mesh .orb{position:absolute;border-radius:50%;filter:blur(120px);opacity:.35;animation:orbFloat 20s ease-in-out infinite;}
.bg-mesh .orb1{width:600px;height:600px;background:var(--cyan);top:-200px;left:-100px;}
.bg-mesh .orb2{width:500px;height:500px;background:var(--purple);bottom:-150px;right:-100px;animation-delay:-7s;}
.bg-mesh .orb3{width:400px;height:400px;background:var(--blue);top:40%;left:50%;animation-delay:-14s;}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}25%{transform:translate(80px,-60px) scale(1.1)}50%{transform:translate(-40px,80px) scale(.9)}75%{transform:translate(60px,40px) scale(1.05)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes glow-pulse{0%,100%{box-shadow:0 0 30px rgba(0,229,255,.15)}50%{box-shadow:0 0 60px rgba(0,229,255,.3)}}
@keyframes shimmer{0%{background-position:-200% center}100%{background-position:200% center}}
@keyframes spin-slow{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes pulse{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:1;transform:scale(1.3)}}
.sa{animation:fadeUp .7s ease both}

/* ═══ NAV ═══ */
nav{position:sticky;top:0;z-index:100;background:rgba(5,10,24,.88);backdrop-filter:blur(30px) saturate(1.6);border-bottom:1px solid var(--border);}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;height:64px;}
.nav-brand{font-size:18px;font-weight:800;color:#fff;text-decoration:none;display:flex;align-items:center;gap:10px;font-family:'Space Grotesk',sans-serif;}
.nav-brand .logo-ring{width:36px;height:36px;border-radius:50%;background:conic-gradient(var(--cyan),var(--purple),var(--pink),var(--cyan));display:flex;align-items:center;justify-content:center;animation:spin-slow 8s linear infinite;flex-shrink:0;}
.nav-brand .logo-inner{width:28px;height:28px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:14px;}
.nav-links{display:flex;gap:2px;align-items:center;}
.nav-links>a,.nav-drop>summary{padding:8px 16px;font-size:13px;font-weight:600;color:var(--text2);text-decoration:none;border-radius:10px;transition:.25s;cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:4px;}
.nav-links>a:hover,.nav-drop>summary:hover{color:var(--cyan);background:var(--glow);}
.nav-cta{background:linear-gradient(135deg,var(--cyan),var(--blue))!important;color:#000!important;font-weight:800!important;padding:8px 20px!important;border-radius:10px!important;}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:22px;padding:5px 12px;cursor:pointer;}

/* Dropdown menu */
.nav-drop{position:relative;}
.nav-drop>summary::after{content:'▾';font-size:10px;margin-left:2px;}
.nav-drop[open]>summary{color:var(--cyan);background:var(--glow);}
.nav-drop .drop-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:240px;background:rgba(13,22,50,.97);border:1px solid var(--border);border-radius:12px;padding:8px;box-shadow:0 20px 60px rgba(0,0,0,.5);z-index:200;animation:fadeUp .2s ease;}
.nav-drop .drop-menu a{display:flex;align-items:center;gap:10px;padding:10px 14px;font-size:13px;font-weight:600;color:var(--text2);text-decoration:none;border-radius:8px;transition:.2s;}
.nav-drop .drop-menu a:hover{background:var(--glow);color:var(--cyan);}
.nav-drop .drop-menu .drop-icon{font-size:18px;width:24px;text-align:center;}
.drop-divider{height:1px;background:var(--border);margin:6px 0;}

@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:rgba(5,10,24,.97);border-bottom:1px solid var(--border);padding:16px;gap:4px}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .nav-drop .drop-menu{position:static;box-shadow:none;border:none;background:transparent;padding-left:16px;}
}

/* ═══ LAYOUT ═══ */
.wrap{max-width:1200px;margin:0 auto;padding:0 28px;position:relative;z-index:1;}
section{padding:80px 0;}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:2px;padding:7px 18px;border-radius:24px;border:1px solid rgba(0,229,255,.25);color:var(--cyan);background:rgba(0,229,255,.06);margin-bottom:20px;}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:pulse 2s infinite;}
h2.title{font-family:'Space Grotesk',sans-serif;font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.2;margin-bottom:16px;}
h2.title em{font-style:normal;background:linear-gradient(135deg,var(--cyan),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
.subtitle{font-size:17px;color:var(--text2);max-width:660px;line-height:1.75;}

/* ═══ HERO ═══ */
.hero{text-align:center;padding:100px 0 80px;animation:fadeUp .8s ease;}
.hero-icon{font-size:72px;margin-bottom:20px;animation:float 4s ease-in-out infinite;filter:drop-shadow(0 0 40px rgba(0,229,255,.3));}
.hero h1{font-family:'Space Grotesk',sans-serif;font-size:clamp(34px,5.5vw,62px);font-weight:700;line-height:1.1;margin-bottom:24px;letter-spacing:-.02em;}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--cyan),var(--purple),var(--pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-size:200% auto;animation:shimmer 4s linear infinite;}
.hero-sub{font-size:19px;color:var(--text2);max-width:620px;margin:0 auto 36px;line-height:1.8;}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:56px;}

/* ═══ BUTTONS ═══ */
.btn{display:inline-flex;align-items:center;gap:8px;padding:15px 30px;border-radius:12px;font-size:15px;font-weight:700;text-decoration:none;transition:all .3s;border:none;cursor:pointer;position:relative;overflow:hidden;}
.btn-glow{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#000;box-shadow:0 6px 30px rgba(0,229,255,.3);animation:glow-pulse 3s ease infinite;}
.btn-glow:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 10px 40px rgba(0,229,255,.5);}
.btn-fire{background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;box-shadow:0 6px 30px rgba(245,158,11,.3);}
.btn-fire:hover{transform:translateY(-3px);box-shadow:0 10px 40px rgba(245,158,11,.5);}
.btn-ghost{border:1px solid var(--border);color:var(--text2);background:rgba(255,255,255,.03);}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:var(--glow);}

/* ═══ STATS ═══ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:920px;margin:0 auto;}
.stat{text-align:center;padding:28px 16px;border-radius:var(--radius);background:var(--card);border:1px solid var(--border);position:relative;overflow:hidden;transition:.3s;}
.stat:hover{border-color:var(--cyan);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,229,255,.08);}
.stat::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,229,255,.05),transparent);opacity:0;transition:.3s;}
.stat:hover::before{opacity:1;}
.stat-num{font-family:'Space Grotesk',sans-serif;font-size:clamp(28px,4vw,42px);font-weight:700;background:linear-gradient(135deg,var(--cyan),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;position:relative;}
.stat-label{font-size:13px;color:var(--text3);margin-top:6px;line-height:1.4;position:relative;}
@media(max-width:600px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ═══ ALERT ═══ */
.alert{background:linear-gradient(135deg,rgba(239,68,68,.06),rgba(239,68,68,.01));border:1px solid rgba(239,68,68,.2);border-radius:var(--radius);padding:36px;margin:60px auto;max-width:920px;position:relative;overflow:hidden;}
.alert::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(to bottom,var(--red),var(--orange));}
.alert h3{color:var(--red);font-size:20px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.alert p{color:var(--text2);line-height:1.8;font-size:15px;}
.alert strong{color:var(--text);}
.alert ul{list-style:none;margin:18px 0 0;display:grid;gap:10px;}
.alert li{color:var(--text2);font-size:14px;padding:12px 16px 12px 44px;position:relative;background:rgba(239,68,68,.04);border-radius:10px;border:1px solid rgba(239,68,68,.08);}
.alert li::before{content:'⚡';position:absolute;left:14px;top:12px;font-size:16px;}

/* ═══ COURSES (6 khóa học) ═══ */
.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-top:24px;}
.course-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 16px;text-decoration:none;color:var(--text);text-align:center;transition:.35s;position:relative;overflow:hidden;}
.course-card::before{content:'';position:absolute;inset:0;background:var(--card-grad);opacity:0;transition:.35s;}
.course-card:hover{transform:translateY(-5px);box-shadow:0 16px 48px rgba(0,229,255,.1);}
.course-card:hover::before{opacity:1;}
.course-card .c-icon{font-size:40px;margin-bottom:10px;position:relative;filter:drop-shadow(0 4px 16px rgba(0,0,0,.4));}
.course-card .c-name{font-family:'Space Grotesk',sans-serif;font-size:16px;font-weight:700;margin-bottom:4px;position:relative;}
.course-card .c-org{font-size:11px;color:var(--text3);text-transform:uppercase;letter-spacing:1px;position:relative;}
.course-card .c-tag{display:inline-block;margin-top:10px;padding:4px 12px;border-radius:8px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;position:relative;}
.c-tag.ec{background:rgba(168,85,247,.12);color:var(--purple);border:1px solid rgba(168,85,247,.2);}
.c-tag.ct{background:rgba(0,229,255,.1);color:var(--cyan);border:1px solid rgba(0,229,255,.2);}

/* ═══ MODULE CARDS ═══ */
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;margin-top:24px;}
.mcard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 24px 20px;text-decoration:none;color:var(--text);transition:all .35s;display:flex;gap:16px;align-items:flex-start;position:relative;overflow:hidden;}
.mcard::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,229,255,.04),rgba(168,85,247,.04));opacity:0;transition:.35s;}
.mcard:hover{border-color:rgba(0,229,255,.4);transform:translateY(-4px);box-shadow:0 16px 48px rgba(0,229,255,.08);}
.mcard:hover::before{opacity:1;}
.mcard .mc-icon{font-size:36px;flex-shrink:0;position:relative;filter:drop-shadow(0 4px 12px rgba(0,0,0,.3));}
.mcard .mc-body{position:relative;}
.mcard .mc-name{font-family:'Space Grotesk',sans-serif;font-size:16px;font-weight:700;margin-bottom:5px;}
.mcard .mc-desc{font-size:13px;color:var(--text2);line-height:1.6;}
.mcard .mc-arrow{position:absolute;top:24px;right:20px;color:var(--text3);font-size:20px;transition:.3s;font-weight:300;}
.mcard:hover .mc-arrow{color:var(--cyan);transform:translateX(5px);}
.phase{font-family:'Space Grotesk',sans-serif;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:2px;color:var(--cyan);margin:36px 0 8px;padding-bottom:10px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;}
.phase.adv{color:var(--purple);}
.phase .p-dot{width:8px;height:8px;border-radius:50%;background:currentColor;}

/* ═══ TOOL CARDS ═══ */
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:28px;}
.tcard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;text-decoration:none;color:var(--text);transition:all .35s;display:block;position:relative;overflow:hidden;}
.tcard::after{content:'';position:absolute;top:-50%;right:-50%;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(0,229,255,.06),transparent 70%);transition:.5s;}
.tcard:hover{border-color:var(--cyan);box-shadow:0 20px 60px rgba(0,229,255,.1);transform:translateY(-4px);}
.tcard:hover::after{transform:translate(-30px,30px) scale(2);}
.tcard .t-icon{font-size:44px;margin-bottom:14px;filter:drop-shadow(0 6px 20px rgba(0,0,0,.4));}
.tcard .t-name{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:700;margin-bottom:8px;}
.tcard .t-desc{font-size:13px;color:var(--text2);line-height:1.7;margin-bottom:16px;}
.tcard .t-btn{display:inline-flex;padding:10px 22px;border-radius:10px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#000;font-size:13px;font-weight:700;position:relative;}
.tcard.coming{opacity:.7;pointer-events:none;}
.tcard .t-coming{display:inline-flex;padding:5px 14px;border-radius:8px;background:rgba(245,158,11,.1);border:1px solid rgba(245,158,11,.2);color:var(--orange);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;position:relative;}

/* ═══ COMPLIANCE ═══ */
.cgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:24px;}
.ccard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;transition:.3s;}
.ccard:hover{border-color:var(--blue);transform:translateY(-3px);}
.ccard .cc-i{font-size:36px;margin-bottom:8px;}
.ccard .cc-t{font-family:'Space Grotesk',sans-serif;font-size:15px;font-weight:700;margin-bottom:8px;}
.ccard .cc-d{font-size:13px;color:var(--text2);line-height:1.6;}

/* ═══ PRO ═══ */
.pro{background:var(--card);border:2px solid rgba(245,158,11,.25);border-radius:20px;padding:56px 40px;text-align:center;margin:48px 0;position:relative;overflow:hidden;}
.pro::before{content:'';position:absolute;top:-100px;right:-100px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(245,158,11,.08),transparent 70%);}
.pro .pro-badge{display:inline-block;padding:7px 20px;border-radius:24px;background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:20px;}
.pro h2{font-family:'Space Grotesk',sans-serif;font-size:32px;font-weight:700;margin-bottom:14px;position:relative;}
.pro p{color:var(--text2);max-width:580px;margin:0 auto 28px;line-height:1.75;position:relative;}
.pro-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:28px;position:relative;}
.pro-tag{padding:10px 18px;border-radius:10px;background:rgba(245,158,11,.06);border:1px solid rgba(245,158,11,.15);font-size:13px;font-weight:600;color:var(--orange);transition:.2s;}
.pro-tag:hover{background:rgba(245,158,11,.12);transform:translateY(-2px);}

/* ═══ VPN ═══ */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-top:24px;}
.vcard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;text-align:center;transition:.3s;}
.vcard:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.3);}
.vbadge{display:inline-block;padding:5px 14px;border-radius:12px;font-size:11px;font-weight:700;margin-bottom:12px;}
.vbadge.n{background:rgba(86,134,245,.1);color:#5686f5;border:1px solid rgba(86,134,245,.2)}
.vbadge.s{background:rgba(30,195,155,.1);color:#1ec39b;border:1px solid rgba(30,195,155,.2)}
.vbadge.p{background:rgba(148,103,246,.1);color:#9467f6;border:1px solid rgba(148,103,246,.2)}
.vname{font-family:'Space Grotesk',sans-serif;font-size:24px;font-weight:700;margin-bottom:14px;}
.vfeat{font-size:13px;color:var(--text2);margin:5px 0;}
.vbtn{display:inline-block;margin-top:18px;padding:12px 28px;border-radius:10px;font-size:13px;font-weight:700;text-decoration:none;color:#fff;transition:.3s;}
.vbtn:hover{transform:translateY(-3px);}
.vbtn.n{background:linear-gradient(135deg,#4472c4,#5686f5)}.vbtn.s{background:linear-gradient(135deg,#16a085,#1ec39b)}.vbtn.p{background:linear-gradient(135deg,#7c3aed,#9467f6)}

/* ═══ HOSTING ═══ */
.hosting{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:36px;text-align:center;margin:48px 0;}
.hosting h3{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:700;margin-bottom:10px;}
.hosting p{color:var(--text2);font-size:14px;margin-bottom:18px;}
.hosting a{display:inline-block;padding:13px 30px;border-radius:10px;background:linear-gradient(135deg,#673de6,#9333ea);color:#fff;font-size:14px;font-weight:700;text-decoration:none;transition:.3s;}
.hosting a:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(103,61,230,.35);}

/* ═══ FOOTER ═══ */
footer{border-top:1px solid var(--border);padding:48px 0;text-align:center;}
footer p{font-size:13px;color:var(--text3);margin:5px 0;line-height:1.7;}
footer a{color:var(--cyan);text-decoration:none;transition:.2s;}
footer a:hover{color:#fff;}
.ft-brand{font-family:'Space Grotesk',sans-serif;font-size:18px;font-weight:700;color:var(--text);margin-bottom:10px;display:flex;align-items:center;justify-content:center;gap:8px;}
.ft-links{margin-top:16px;display:flex;flex-wrap:wrap;justify-content:center;gap:8px;}
.ft-links a{padding:6px 14px;border-radius:8px;font-size:12px;font-weight:600;color:var(--text2);border:1px solid var(--border);transition:.2s;}
.ft-links a:hover{border-color:var(--cyan);color:var(--cyan);}

@media(max-width:600px){.hero h1{font-size:28px}.hero-cta{flex-direction:column;align-items:center}.courses-grid{grid-template-columns:repeat(2,1fr)}}

/* Compliance cards as links */
a.ccard{text-decoration:none;color:var(--text);cursor:pointer;}
a.ccard:hover{border-color:var(--cyan);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,229,255,.1);}

/* ═══ BOOKS GRID ═══ */
.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-top:24px;}
.book-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 12px;text-decoration:none;color:var(--text);text-align:center;transition:.35s;position:relative;overflow:hidden;}
.book-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,229,255,.04),rgba(168,85,247,.04));opacity:0;transition:.35s;}
.book-card:hover{transform:translateY(-5px);border-color:var(--cyan);box-shadow:0 12px 36px rgba(0,229,255,.1);}
.book-card:hover::before{opacity:1;}
.book-card .b-icon{font-size:36px;margin-bottom:8px;position:relative;filter:drop-shadow(0 4px 12px rgba(0,0,0,.3));}
.book-card .b-name{font-family:'Space Grotesk',sans-serif;font-size:13px;font-weight:700;position:relative;line-height:1.3;}

/* ═══ EXAM / ÔN THI GRID ═══ */
.exam-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:24px;}
.exam-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px 20px;text-decoration:none;color:var(--text);transition:.3s;display:block;position:relative;overflow:hidden;}
.exam-card::before{content:'';position:absolute;top:0;left:0;width:3px;height:100%;border-radius:3px 0 0 3px;}
.exam-card.ec::before{background:var(--purple);}
.exam-card.ct::before{background:var(--cyan);}
.exam-card:hover{transform:translateY(-3px);border-color:var(--cyan);box-shadow:0 8px 28px rgba(0,229,255,.08);}
.exam-card .ex-name{font-family:'Space Grotesk',sans-serif;font-size:15px;font-weight:700;margin-bottom:4px;}
.exam-card .ex-desc{font-size:12px;color:var(--text2);line-height:1.4;}

/* ═══ ONLINE TAG ═══ */
.c-tag.ol{background:rgba(34,197,94,.1);color:var(--green);border:1px solid rgba(34,197,94,.2);}

/* ═══ FIX: dropdown mũi tên kép ═══ */
/* Ẩn default marker của <details><summary> */
.nav-drop>summary{list-style:none;}
.nav-drop>summary::-webkit-details-marker{display:none;}
.nav-drop>summary::marker{display:none;content:'';}
/* Chỉ dùng 1 mũi tên CSS */
.nav-drop>summary::after{content:'▾';font-size:10px;margin-left:4px;display:inline;transition:transform .2s;}
.nav-drop[open]>summary::after{transform:rotate(180deg);}