/* NoorStudyMind landing - one-screen overview, fits phone + desktop.
   Extends login.css (same colours, glass, blobs, fonts). */
html,body.landing{min-height:100vh;min-height:100dvh}
body.landing{display:flex;flex-direction:column;overflow-x:hidden}
.landing a{text-decoration:none}

/* ---------- top bar ---------- */
.top{position:relative;z-index:2;width:100%;max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:max(clamp(12px,2.4vh,24px),env(safe-area-inset-top)) clamp(16px,4vw,40px) 0}
.top .brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:800;font-size:clamp(17px,2.4vw,20px);letter-spacing:-.03em;min-width:0}
.top .brand img{width:clamp(34px,5vw,40px);height:auto;border-radius:12px;box-shadow:0 8px 22px #8b3dff55;flex:none}
.top .brand span{white-space:nowrap}
.top-nav{display:flex;align-items:center;gap:8px;flex:none}
.ghost,.pill{display:inline-grid;place-items:center;height:40px;padding:0 16px;border-radius:999px;font-weight:600;font-size:14px;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s,border-color .2s,box-shadow .2s}
.ghost{color:var(--tx);border:1.5px solid var(--line)}
.ghost:hover{border-color:var(--a1);background:#8b3dff14}
.pill{color:#fff;background:var(--grad);box-shadow:0 8px 22px #8b3dff55}
.pill:hover{transform:translateY(-2px);box-shadow:0 12px 28px #8b3dff77}

/* ---------- main: fills the space between header and footer ---------- */
.land{position:relative;z-index:1;flex:1;width:100%;max-width:1120px;margin:0 auto;
  padding:clamp(12px,3vh,36px) clamp(16px,4vw,40px);
  display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:clamp(24px,5vw,64px)}

/* ---------- copy ---------- */
.copy{animation:rise .6s var(--ease) both}
.badge{display:inline-flex;align-items:center;gap:9px;padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--glass);border:1px solid #ffffff1f;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
html.light .badge{border-color:var(--line)}
.badge i{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 0 #22c55e88;animation:ping 1.8s infinite}
@keyframes ping{70%{box-shadow:0 0 0 9px #22c55e00}100%{box-shadow:0 0 0 0 #22c55e00}}

.copy h1{margin-top:clamp(12px,2.4vh,22px);font-size:clamp(32px,min(6.4vw,9vh),68px);line-height:1.05;font-weight:800;letter-spacing:-.045em}
.copy h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin-top:clamp(10px,2vh,18px);max-width:520px;color:var(--mut);font-size:clamp(15px,1.7vw,18px)}

/* ---------- buttons ---------- */
.cta{margin-top:clamp(16px,3.4vh,30px);display:flex;flex-wrap:wrap;gap:12px}
.join{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:clamp(50px,7vh,58px);padding:0 30px;border-radius:17px;
  color:#fff;font-size:clamp(15.5px,1.6vw,17px);font-weight:700;background:var(--grad);overflow:hidden;
  box-shadow:0 14px 36px #8b3dff77,inset 0 1px 0 #ffffff33;
  transition:transform .25s var(--ease),box-shadow .25s,filter .2s}
.join::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(100deg,transparent,#ffffff55,transparent);transform:skewX(-20deg);animation:shine 3.6s ease-in-out infinite}
@keyframes shine{0%,60%{left:-60%}100%{left:130%}}
.join svg{width:21px;height:21px;transition:transform .25s var(--ease)}
.join:hover{transform:translateY(-3px);box-shadow:0 20px 46px #8b3dff99;filter:brightness(1.07)}
.join:hover svg{transform:translateX(5px)}
.join:active{transform:translateY(0) scale(.98)}
.cta .create{height:clamp(50px,7vh,58px);padding:0 26px;border-radius:17px;font-size:15.5px}
.fine{margin-top:clamp(10px,1.8vh,16px);font-size:13px;color:var(--mut)}
.fine b{color:var(--tx)}

/* ---------- right side ---------- */
.side{display:flex;flex-direction:column;gap:clamp(12px,2.4vh,22px);min-width:0;animation:rise .7s var(--ease) both .08s}
.side .demo{margin:0;max-width:380px;width:100%;align-self:center}

.feats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.feat{display:flex;align-items:center;gap:12px;padding:clamp(12px,2vh,16px);border-radius:20px;min-width:0;
  background:var(--glass);border:1px solid #ffffff1a;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:0 12px 34px #0004;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
html.light .feat{border-color:var(--line);box-shadow:0 10px 30px #8b3dff1a}
.feat:hover{transform:translateY(-4px);border-color:#8b3dff88;box-shadow:0 18px 44px #8b3dff33}
.feat .ic{flex:none;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;color:#fff;background:var(--grad);box-shadow:0 8px 20px #8b3dff55}
.feat .ic svg{width:21px;height:21px}
.feat h3{font-size:15px;font-weight:700;letter-spacing:-.02em;line-height:1.2}
.feat p{margin-top:2px;color:var(--mut);font-size:12.5px;line-height:1.3}

/* ---------- footer ---------- */
.foot{position:relative;z-index:1;text-align:center;padding:6px 16px max(14px,env(safe-area-inset-bottom));color:var(--mut);font-size:12.5px}

/* ---------- tablet + phone: single column, everything centred ---------- */
@media (max-width:899px){
  .land{grid-template-columns:1fr;align-content:center;justify-items:center;gap:clamp(14px,3vh,28px);text-align:center}
  .copy{display:flex;flex-direction:column;align-items:center}
  .lead{margin-left:auto;margin-right:auto}
  .cta{justify-content:center;width:100%;max-width:440px}
  .side{width:100%;max-width:520px}
  .side .demo{display:none}                 /* chat preview hidden on small screens to keep it on one screen */
  .feat{text-align:left}
}
@media (max-width:520px){
  .cta{flex-direction:column}
  .join,.cta .create{width:100%}
  .ghost{display:none}                      /* "Sign up" stays; "Log in" is reachable via the main button */
  .feats{gap:10px}
  .feat{flex-direction:column;align-items:flex-start;gap:8px;padding:12px}
  .feat .ic{width:36px;height:36px;border-radius:11px}
  .feat .ic svg{width:19px;height:19px}
  .feat h3{font-size:14px}
  .feat p{font-size:12px}
}

/* ---------- short screens (small phones, landscape, small laptops) ---------- */
@media (max-height:760px){
  .side .demo{display:none}
}
@media (max-height:640px){
  .feat p,.fine{display:none}
  .feat{padding:10px 12px}
  .feats{gap:8px}
}
@media (max-height:520px){
  .badge{display:none}
}

/* ---------- Android app download button ---------- */
.dl{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:clamp(50px,7vh,58px);padding:0 24px;border-radius:17px;
  font-size:15.5px;font-weight:700;color:var(--tx);background:var(--glass);border:1.5px solid #3ddc8466;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:transform .2s var(--ease),border-color .2s,background .2s,box-shadow .2s}
.dl svg{width:20px;height:20px;color:#3ddc84}
.dl:hover{transform:translateY(-2px);border-color:#3ddc84;background:#3ddc8414;box-shadow:0 12px 30px #3ddc8426}
@media (max-width:520px){.dl{width:100%}}
@media (max-height:640px){.dl{height:46px;font-size:14.5px}}

/* ---------- StudyMind UG link card ---------- */
.sm-card{position:relative;display:flex;align-items:center;gap:14px;padding:clamp(12px,2vh,16px) 18px;border-radius:22px;overflow:hidden;color:var(--tx);
  background:linear-gradient(135deg,#8b3dff2e,#2b7bff2e),var(--glass);border:1.5px solid #8b3dff66;
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 16px 40px #8b3dff30;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.sm-card::after{content:"";position:absolute;top:0;left:-70%;width:40%;height:100%;
  background:linear-gradient(100deg,transparent,#ffffff22,transparent);transform:skewX(-20deg);animation:shine 5s ease-in-out infinite}
.sm-card:hover{transform:translateY(-4px);border-color:#8b3dffcc;box-shadow:0 22px 54px #8b3dff55}
.sm-ic{flex:none;width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:#fff;background:var(--grad);box-shadow:0 10px 24px #8b3dff55}
.sm-ic svg{width:24px;height:24px}
.sm-tx{flex:1;min-width:0;text-align:left}
.sm-chip{display:inline-block;padding:2px 9px;border-radius:999px;font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:#fff;background:var(--grad);margin-bottom:5px}
.sm-tx h3{font-size:17px;font-weight:800;letter-spacing:-.03em;line-height:1.15}
.sm-tx p{margin-top:2px;color:var(--mut);font-size:12.5px;line-height:1.3}
.sm-go{flex:none;width:22px;height:22px;color:var(--a1);transition:transform .25s var(--ease)}
.sm-card:hover .sm-go{transform:translate(3px,-3px)}
@media (max-width:520px){
  .sm-card{padding:12px 14px;gap:12px}
  .sm-ic{width:42px;height:42px;border-radius:13px}
}
@media (max-height:760px){.sm-tx p{display:none}}
@media (max-height:640px){.sm-chip{display:none}.sm-ic{width:38px;height:38px}}