/* ===== Bangla Fake News Detection — shared styles ===== */
@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,900;1,9..144,400&family=Spline+Sans+Mono:wght@400;500&display=swap');

:root{
  --ink:#16130f;
  --paper:#f6f1e7;
  --paper-2:#efe7d6;
  --line:#d8cdb6;
  --accent:#9a3b2e;        /* deep terracotta */
  --accent-2:#1f4e79;      /* report blue, used sparingly */
  --teal:#2b6a5f;
  --gold:#b78b2e;
  --auth:#2b6a5f;          /* authentic = green-teal */
  --fake:#a8321f;          /* fake = red */
  --susp:#b78b2e;          /* suspicious = gold */
  --shadow:0 2px 0 rgba(22,19,15,.08), 0 18px 40px -22px rgba(22,19,15,.5);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Hind Siliguri',system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(154,59,46,.05), transparent 32%),
    radial-gradient(circle at 88% 8%, rgba(31,78,121,.05), transparent 30%);
  min-height:100vh;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
a{color:var(--accent);text-decoration:none}

/* ---- top bar ---- */
header.topbar{
  border-bottom:1.5px solid var(--ink);
  background:var(--paper);
  position:sticky;top:0;z-index:50;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand .mark{
  width:38px;height:38px;border:1.5px solid var(--ink);border-radius:9px;
  display:grid;place-items:center;font-family:'Fraunces',serif;font-weight:900;
  background:var(--ink);color:var(--paper);font-size:20px;
}
.brand b{font-family:'Fraunces',serif;font-weight:900;font-size:19px;letter-spacing:-.01em}
.brand span{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#6b6253;font-weight:600}
nav.menu{display:flex;gap:6px}
nav.menu a{
  font-size:13.5px;font-weight:600;color:var(--ink);padding:8px 14px;border-radius:8px;
  letter-spacing:.01em;transition:background .15s;
}
nav.menu a:hover{background:var(--paper-2)}
nav.menu a.active{background:var(--ink);color:var(--paper)}

/* ---- hero / page head ---- */
.pagehead{padding:54px 0 30px;border-bottom:1px solid var(--line)}
.eyebrow{font-family:'Spline Sans Mono',monospace;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:500}
.pagehead h1{font-family:'Fraunces',serif;font-weight:900;font-size:clamp(30px,5vw,52px);line-height:1.02;letter-spacing:-.02em;margin:12px 0 10px;max-width:18ch}
.pagehead p.lead{font-size:17px;max-width:60ch;color:#4a4337}

/* ---- cards / panels ---- */
.panel{
  background:#fffdf8;border:1.5px solid var(--ink);border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.panel-pad{padding:26px}
.section{padding:36px 0}

/* ---- detection input ---- */
.detect-grid{display:grid;grid-template-columns:1fr;gap:22px}
label.fld{display:block;font-weight:700;font-size:14px;margin-bottom:8px}
.hint{font-size:12.5px;color:#7a7163;font-weight:500}
textarea, input[type=text], input[type=url], select{
  width:100%;font-family:'Hind Siliguri',sans-serif;font-size:15px;color:var(--ink);
  background:var(--paper);border:1.5px solid var(--line);border-radius:10px;padding:13px 14px;
  transition:border-color .15s, box-shadow .15s;
}
textarea{min-height:190px;resize:vertical;line-height:1.7}
textarea:focus, input:focus, select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(154,59,46,.12)}
.toggle-src{display:flex;gap:8px;margin-bottom:14px}
.toggle-src button{
  flex:0 0 auto;font-family:inherit;font-weight:600;font-size:13.5px;cursor:pointer;
  background:var(--paper);border:1.5px solid var(--ink);border-radius:999px;padding:8px 16px;color:var(--ink);
  transition:all .15s;
}
.toggle-src button.on{background:var(--ink);color:var(--paper)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.row2{grid-template-columns:1fr}}

/* ---- buttons ---- */
.btn{
  font-family:inherit;font-weight:700;font-size:15px;cursor:pointer;border:1.5px solid var(--ink);
  background:var(--accent);color:#fff;padding:13px 26px;border-radius:11px;
  display:inline-flex;align-items:center;gap:10px;transition:transform .08s, box-shadow .15s;
  box-shadow:0 3px 0 var(--ink);
}
.btn:hover{transform:translateY(-1px);box-shadow:0 5px 0 var(--ink)}
.btn:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:0 3px 0 var(--ink)}
.btn.small{padding:9px 16px;font-size:13.5px;box-shadow:0 2px 0 var(--ink)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:0 3px 0 var(--ink)}

/* ---- verdict ---- */
.verdict{display:none;margin-top:26px}
.verdict.show{display:block;animation:rise .4s ease both}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.verdict-head{
  display:flex;align-items:center;gap:18px;padding:24px 26px;border-radius:var(--radius) var(--radius) 0 0;
  border:1.5px solid var(--ink);border-bottom:none;
}
.verdict-head.authentic{background:linear-gradient(180deg,#e3efe9,#d6e8df)}
.verdict-head.fake{background:linear-gradient(180deg,#f3ddd6,#eecabf)}
.verdict-head.suspicious{background:linear-gradient(180deg,#f5ecd2,#efe1bd)}
.vbadge{
  width:74px;height:74px;border-radius:16px;border:1.5px solid var(--ink);flex:0 0 auto;
  display:grid;place-items:center;font-size:34px;background:#fffdf8;
}
.verdict-head h2{font-family:'Fraunces',serif;font-weight:900;font-size:30px;line-height:1;letter-spacing:-.01em}
.verdict-head .sub{font-size:14px;color:#574d3f;font-weight:600;margin-top:5px}
.score-chip{margin-left:auto;text-align:right}
.score-chip .num{font-family:'Fraunces',serif;font-weight:900;font-size:40px;line-height:1}
.score-chip .lab{font-family:'Spline Sans Mono',monospace;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:#6b6253}

/* ---- feature breakdown ---- */
.features{border:1.5px solid var(--ink);border-radius:0 0 var(--radius) var(--radius);background:#fffdf8;padding:24px 26px}
.features h3{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#6b6253;font-weight:700;margin-bottom:18px;font-family:'Spline Sans Mono',monospace}
.feat{margin-bottom:18px}
.feat:last-child{margin-bottom:0}
.feat-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.feat-top .name{font-weight:700;font-size:14.5px}
.feat-top .name small{display:block;font-weight:500;font-size:12px;color:#7a7163;letter-spacing:.02em}
.feat-top .val{font-family:'Spline Sans Mono',monospace;font-weight:500;font-size:15px}
.bar{height:11px;background:var(--paper-2);border:1.5px solid var(--ink);border-radius:999px;overflow:hidden}
.bar > i{display:block;height:100%;background:var(--teal);width:0;transition:width 1s cubic-bezier(.2,.8,.2,1)}
.feat.low .bar > i{background:var(--fake)}
.feat.mid .bar > i{background:var(--gold)}

.meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tag{font-family:'Spline Sans Mono',monospace;font-size:11.5px;background:var(--paper-2);border:1.5px solid var(--line);border-radius:8px;padding:6px 11px;color:#4a4337}
.tag b{color:var(--ink)}

/* evidence */
.evidence{margin-top:20px;border-top:1px dashed var(--line);padding-top:18px}
.evidence h4{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#6b6253;font-weight:700;margin-bottom:10px}
.src{display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px solid var(--line)}
.src:last-child{border-bottom:none}
.src .dot{width:9px;height:9px;border-radius:50%;background:var(--teal);margin-top:7px;flex:0 0 auto}
.src .t{font-weight:600;font-size:14px}
.src .u{font-family:'Spline Sans Mono',monospace;font-size:12px;color:var(--accent-2)}
.src .m{margin-left:auto;font-family:'Spline Sans Mono',monospace;font-size:12px;color:#7a7163;white-space:nowrap}

/* footer */
footer.foot{border-top:1.5px solid var(--ink);margin-top:60px;padding:28px 0;font-size:13px;color:#6b6253}
footer.foot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* spinner */
.spin{display:inline-block;width:16px;height:16px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* small note banner */
.note-ill{background:#fff7e6;border:1.5px solid var(--gold);border-radius:10px;padding:10px 14px;font-size:12.5px;color:#6a5316;font-weight:600;margin-top:18px}

/* steps for survey */
.steps{display:flex;gap:8px;margin-bottom:8px}
.steps .s{flex:1;height:6px;border-radius:999px;background:var(--paper-2);border:1.5px solid var(--line)}
.steps .s.done{background:var(--accent);border-color:var(--ink)}
.qcard{margin-bottom:22px}
.qcard .q{font-weight:700;font-size:16px;margin-bottom:12px}
.qcard .q b{color:var(--accent)}
.opts{display:grid;gap:9px}
.opt{display:flex;align-items:center;gap:11px;border:1.5px solid var(--line);border-radius:10px;padding:12px 14px;cursor:pointer;background:var(--paper);transition:all .12s;font-size:14.5px;font-weight:500}
.opt:hover{border-color:var(--accent)}
.opt.sel{border-color:var(--ink);background:#fff;box-shadow:inset 0 0 0 1.5px var(--ink)}
.opt input{appearance:none;width:18px;height:18px;border:1.5px solid var(--ink);border-radius:50%;flex:0 0 auto;position:relative}
.opt.sel input{background:var(--accent)}
.opt.sel input::after{content:"";position:absolute;inset:4px;background:#fff;border-radius:50%}

/* article card for survey detection task */
.artcard{border:1.5px solid var(--ink);border-radius:12px;padding:20px;background:#fffdf8;margin-bottom:18px}
.artcard .h{font-family:'Spline Sans Mono',monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:500;margin-bottom:8px}
.artcard .body{font-size:15px;line-height:1.8;max-height:160px;overflow:auto;border-left:3px solid var(--line);padding-left:14px;color:#3a342a}
.choose{display:flex;gap:10px;margin-top:16px}
.choose .c{flex:1;text-align:center;border:1.5px solid var(--ink);border-radius:10px;padding:12px;font-weight:700;cursor:pointer;background:var(--paper);transition:all .12s}
.choose .c:hover{transform:translateY(-1px)}
.choose .c.pick-auth.sel{background:var(--auth);color:#fff}
.choose .c.pick-fake.sel{background:var(--fake);color:#fff}

/* admin dashboard */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:760px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
.stat{border:1.5px solid var(--ink);border-radius:12px;padding:18px;background:#fffdf8;box-shadow:var(--shadow)}
.stat .k{font-family:'Spline Sans Mono',monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#6b6253}
.stat .v{font-family:'Fraunces',serif;font-weight:900;font-size:34px;line-height:1.1;margin-top:6px}
.stat .d{font-size:12.5px;color:var(--teal);font-weight:600;margin-top:4px}
table.tbl{width:100%;border-collapse:collapse;margin-top:18px;font-size:14px}
table.tbl th{background:var(--ink);color:var(--paper);text-align:left;padding:11px 13px;font-size:12px;letter-spacing:.04em;text-transform:uppercase}
table.tbl td{padding:11px 13px;border-bottom:1px solid var(--line)}
table.tbl tr:nth-child(even) td{background:var(--paper-2)}
.pill{display:inline-block;font-family:'Spline Sans Mono',monospace;font-size:11px;font-weight:500;padding:3px 9px;border-radius:999px;border:1.5px solid var(--ink)}
.pill.authentic{background:#d6e8df}
.pill.fake{background:#eecabf}
.pill.suspicious{background:#efe1bd}

/* ===== bilingual helpers ===== */
.bn{font-family:'Hind Siliguri',sans-serif;}
.lng{display:block}
.lng .en{display:block}
.lng .bn{display:block;font-size:.86em;color:#7a7163;font-weight:500;margin-top:1px}
.pagehead h1 .bn{font-size:.5em;color:#6b6253;font-weight:600;font-family:'Hind Siliguri',sans-serif;margin-top:8px;letter-spacing:0}
nav.menu a .bn{font-size:10px;color:inherit;opacity:.7;font-weight:500}
nav.menu a{display:flex;flex-direction:column;line-height:1.15;text-align:center}
.btn .bn{font-size:.72em;font-weight:600;opacity:.85}
.btn{flex-direction:column;line-height:1.2}
.appbadge{font-family:'Spline Sans Mono',monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;background:var(--accent);color:#fff;padding:3px 9px;border-radius:6px;font-weight:500;margin-left:10px}
.appbadge.survey{background:var(--accent-2)}