/* static/qhub/css/style.css */
*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --cosmos:#050D1A;--deep:#0A1F3D;--quantum:#0D3270;--photon:#1158B8;
  --entangled:#38A8F5;--superpos:#7DDCFF;--coherence:#C2EEFF;
  --white:#FFFFFF;--nebula:#B0C8E8;--cavern:#3D5A7A;
}
html{scroll-behavior:smooth;}
body{background:var(--cosmos);color:var(--white);font-family:'Segoe UI',system-ui,sans-serif;line-height:1.7;}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(5,13,26,0.88);backdrop-filter:blur(14px);border-bottom:0.5px solid var(--cavern);padding:0 2rem;}
.nav-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px;}
.nav-logo{display:flex;align-items:center;gap:12px;text-decoration:none;}
.nav-logo-text{font-size:15px;font-weight:600;color:var(--white);letter-spacing:0.02em;line-height:1.2;}
.nav-logo-sub{font-size:10px;color:var(--entangled);letter-spacing:0.14em;text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:2rem;}
.nav-links a{color:var(--nebula);text-decoration:none;font-size:14px;transition:color .2s;}
.nav-links a:hover{color:var(--entangled);}
.lang-toggle{display:flex;background:var(--deep);border:0.5px solid var(--cavern);border-radius:6px;overflow:hidden;}
.lang-btn{padding:5px 12px;font-size:13px;font-weight:500;cursor:pointer;border:none;background:transparent;color:var(--nebula);transition:background .2s,color .2s;}
.lang-btn.active{background:var(--photon);color:var(--white);}

/* HERO */
.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:6rem 2rem 4rem;position:relative;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 50% 40%,rgba(17,88,184,0.2) 0%,transparent 70%);pointer-events:none;z-index:0;}
.hero-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;}
.hero-logo{margin-bottom:2rem;}
.hero-logo-icon{font-size:5rem;color:var(--entangled);filter:drop-shadow(0 0 32px rgba(56,168,245,0.35));}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:700;line-height:1.15;max-width:780px;margin-bottom:1.5rem;}
.hero h1 span{color:var(--entangled);}
.hero-sub{font-size:clamp(1rem,2vw,1.12rem);color:var(--nebula);max-width:580px;margin-bottom:2.5rem;line-height:1.75;}
.hero-ctas{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;}
.btn-primary{background:var(--entangled);color:var(--cosmos);padding:14px 28px;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;transition:background .2s,transform .15s;display:inline-block;}
.btn-primary:hover{background:var(--superpos);transform:translateY(-1px);}
.btn-secondary{background:transparent;color:var(--entangled);padding:14px 28px;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;border:1.5px solid var(--entangled);transition:background .2s,transform .15s;display:inline-block;}
.btn-secondary:hover{background:rgba(56,168,245,0.1);transform:translateY(-1px);}
.hero-scroll{position:absolute;bottom:2.5rem;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--cavern);font-size:12px;letter-spacing:0.08em;z-index:1;}
.scroll-line{width:1px;height:32px;background:linear-gradient(to bottom,var(--cavern),transparent);}

/* SECTIONS */
section{padding:5rem 2rem;}
.container{max-width:1100px;margin:0 auto;}
.section-tag{font-size:12px;color:var(--entangled);letter-spacing:0.12em;text-transform:uppercase;margin-bottom:1rem;}
.section-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;margin-bottom:1rem;line-height:1.2;}
.section-desc{font-size:1rem;color:var(--nebula);max-width:640px;line-height:1.75;}

/* ABOUT */
.about{background:var(--deep);border-top:0.5px solid var(--cavern);border-bottom:0.5px solid var(--cavern);}
.about-text p{color:var(--nebula);line-height:1.8;font-size:0.97rem;margin-bottom:1rem;}

/* MISSION/VISION */
.mv-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:3rem;}
.mv-card{background:var(--deep);border:0.5px solid var(--cavern);border-radius:16px;padding:2rem;position:relative;overflow:hidden;}
.mv-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;}
.mv-card.mission::before{background:linear-gradient(90deg,var(--photon),var(--entangled));}
.mv-card.vision::before{background:linear-gradient(90deg,var(--entangled),var(--superpos));}
.mv-icon{font-size:1.8rem;margin-bottom:1rem;}
.mv-card h3{font-size:12px;font-weight:600;color:var(--entangled);margin-bottom:1rem;letter-spacing:0.04em;text-transform:uppercase;}
.mv-card p{color:var(--nebula);font-size:0.95rem;line-height:1.8;}

/* PILLARS */
.pillars{background:var(--deep);border-top:0.5px solid var(--cavern);border-bottom:0.5px solid var(--cavern);}
.pillars-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:3rem;position:relative;z-index:1;}
.pillar-card{background:var(--quantum);border:0.5px solid var(--cavern);border-radius:16px;padding:2rem;transition:border-color .3s,transform .2s;}
.pillar-card:hover{border-color:var(--photon);transform:translateY(-3px);}
.pillar-icon{width:48px;height:48px;border-radius:12px;background:rgba(17,88,184,0.2);border:0.5px solid var(--photon);display:flex;align-items:center;justify-content:center;margin-bottom:1.25rem;font-size:22px;}
.pillar-card h3{font-size:1rem;font-weight:600;margin-bottom:0.75rem;color:var(--white);}
.pillar-card p{font-size:0.88rem;color:var(--nebula);line-height:1.7;}

/* AUDIENCE */
.audience-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;margin-top:3rem;}
.audience-card{background:var(--deep);border:0.5px solid var(--cavern);border-radius:16px;padding:1.75rem;text-align:center;transition:border-color .3s;}
.audience-card:hover{border-color:var(--entangled);}
.audience-icon{font-size:2rem;margin-bottom:1rem;}
.audience-card h3{font-size:1rem;font-weight:600;margin-bottom:0.5rem;}
.audience-card p{font-size:0.87rem;color:var(--nebula);line-height:1.6;}

/* REGISTER */
.register{background:var(--deep);border-top:0.5px solid var(--cavern);border-bottom:0.5px solid var(--cavern);}
.form-wrap{max-width:640px;margin:3rem auto 0;background:var(--quantum);border:0.5px solid var(--cavern);border-radius:20px;padding:2.5rem;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem;}
.form-group{display:flex;flex-direction:column;gap:6px;}
.form-group.full{grid-column:1/-1;}
label{font-size:13px;color:var(--nebula);font-weight:500;}
input,select,textarea{background:var(--deep);border:0.5px solid var(--cavern);border-radius:8px;padding:10px 14px;color:var(--white);font-size:14px;outline:none;transition:border-color .2s;font-family:inherit;}
input::placeholder,textarea::placeholder{color:var(--cavern);}
input:focus,select:focus,textarea:focus{border-color:var(--entangled);}
select option{background:var(--deep);}
textarea{resize:vertical;min-height:90px;}
.btn-submit{width:100%;background:var(--entangled);color:var(--cosmos);padding:14px;border-radius:8px;font-size:15px;font-weight:700;border:none;cursor:pointer;margin-top:1rem;transition:background .2s;}
.btn-submit:hover{background:var(--superpos);}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;margin-top:3rem;align-items:start;}
.contact-info p{color:var(--nebula);font-size:0.95rem;line-height:1.8;margin-bottom:1.5rem;}
.contact-item{display:flex;align-items:center;gap:12px;margin-bottom:1rem;}
.contact-icon{width:36px;height:36px;border-radius:8px;background:rgba(17,88,184,0.2);border:0.5px solid var(--photon);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;}
.contact-item span{font-size:14px;color:var(--nebula);}

/* FOOTER */
footer{background:var(--cosmos);border-top:0.5px solid var(--cavern);padding:2.5rem 2rem;}
.footer-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;}
.footer-left p{font-size:13px;color:var(--cavern);}
.footer-right{font-size:12px;color:var(--cavern);}

/* RESPONSIVE */
@media(max-width:768px){
  .mv-grid,.pillars-grid,.contact-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .nav-links a{display:none;}
}