/* ============================================================
   ExamAnalyzer — Shared App Design System
   Used by: auth pages, student dashboard, admin dashboard
   ============================================================ */
:root{
  --ivory:#FAF7F1;
  --ivory-deep:#F1EBDD;
  --surface:#FFFFFF;
  --ink:#161530;
  --ink-soft:#5C5A78;
  --ink-faint:#8A87A3;
  --indigo:#4C4FE0;
  --indigo-deep:#3538B8;
  --violet:#8B5FE8;
  --cyan:#12AEBB;
  --coral:#FF8A4C;
  --success:#1FAE7A;
  --danger:#E4483B;
  --warning:#F5A623;
  --line:#E8E1D2;

  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --radius-pill:999px;

  --shadow-lg:0 30px 70px -25px rgba(22,21,48,0.25);
  --shadow-md:0 16px 40px -18px rgba(22,21,48,0.2);
  --shadow-sm:0 8px 20px -10px rgba(22,21,48,0.15);

  --font-display:'Fraunces', serif;
  --font-body:'Plus Jakarta Sans', sans-serif;
  --sidebar-w:260px;
}
*{box-sizing:border-box;}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--ivory);}
a{text-decoration:none;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:-0.01em;margin:0;color:var(--ink);}
p{margin:0;line-height:1.6;}
.container-xl{max-width:1280px;margin:0 auto;padding:0 24px;}

/* -------- buttons / form controls (also used as Bootstrap overrides) -------- */
.btn-xa-primary{
  background:linear-gradient(135deg,var(--indigo),var(--indigo-deep));
  color:#fff;border:none;padding:12px 22px;border-radius:var(--radius-pill);
  font-weight:700;font-size:14.5px;box-shadow:0 12px 26px -10px rgba(76,79,224,0.5);
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;transition:transform .2s ease;
}
.btn-xa-primary:hover{transform:translateY(-2px);color:#fff;}
.btn-xa-ghost{
  background:var(--surface);border:1.5px solid var(--line);color:var(--ink);
  padding:11px 20px;border-radius:var(--radius-pill);font-weight:700;font-size:14.5px;
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;
}
.btn-xa-ghost:hover{border-color:var(--indigo);color:var(--ink);}
.btn-xa-danger{background:rgba(228,72,59,0.1);color:var(--danger);border:none;padding:9px 16px;border-radius:var(--radius-pill);font-weight:700;font-size:13px;cursor:pointer;}

.form-control-xa, select.form-control-xa, textarea.form-control-xa{
  width:100%;border:1.5px solid var(--line);border-radius:var(--radius-md);
  padding:12px 16px;font-family:var(--font-body);font-size:14.5px;background:var(--surface);color:var(--ink);
}
.form-control-xa:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(76,79,224,0.12);}
.form-label-xa{font-size:13.5px;font-weight:700;color:var(--ink-soft);margin-bottom:6px;display:block;}

.badge-xa{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--radius-pill);font-size:11.5px;font-weight:800;}
.badge-success{background:rgba(31,174,122,0.12);color:var(--success);}
.badge-warning{background:rgba(245,166,35,0.14);color:var(--warning);}
.badge-danger{background:rgba(228,72,59,0.1);color:var(--danger);}
.badge-indigo{background:rgba(76,79,224,0.1);color:var(--indigo);}
.badge-violet{background:rgba(139,95,232,0.1);color:var(--violet);}

.alert-xa{border-radius:var(--radius-md);padding:14px 18px;font-size:14px;font-weight:600;margin-bottom:20px;}
.alert-xa.success{background:rgba(31,174,122,0.1);color:#0F7A56;}
.alert-xa.error{background:rgba(228,72,59,0.1);color:#B4362C;}

.card-xa{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;}

/* -------- Auth pages (login/signup/forgot) -------- */
.auth-shell{
  min-height:100vh;display:grid;grid-template-columns:1fr 1fr;
}
.auth-visual{
  background:linear-gradient(160deg,var(--indigo),var(--violet) 55%,var(--cyan));
  display:flex;align-items:center;justify-content:center;padding:60px;position:relative;overflow:hidden;
}
.auth-visual::before{
  content:"";position:absolute;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,0.18),transparent 70%);top:-200px;right:-200px;
}
.auth-visual-card{
  position:relative;z-index:1;background:rgba(255,255,255,0.14);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,0.3);border-radius:var(--radius-xl);padding:40px;color:#fff;max-width:400px;
}
.auth-visual-card h3{color:#fff;font-size:26px;margin-bottom:14px;}
.auth-visual-card p{color:rgba(255,255,255,0.85);font-size:15px;}
.auth-form-side{display:flex;align-items:center;justify-content:center;padding:40px;}
.auth-form-box{width:100%;max-width:400px;}
.auth-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:600;font-size:22px;margin-bottom:36px;}
.auth-logo-mark{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--indigo),var(--violet));display:flex;align-items:center;justify-content:center;}
@media (max-width:900px){.auth-shell{grid-template-columns:1fr;}.auth-visual{display:none;}}

/* -------- Dashboard shell (student + admin share this) -------- */
.app-shell{display:flex;min-height:100vh;}
.app-sidebar{
  width:var(--sidebar-w);flex-shrink:0;background:var(--ink);color:#fff;
  padding:26px 18px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto;
}
.app-sidebar .logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-size:19px;font-weight:600;color:#fff;padding:0 10px 26px;}
.app-sidebar .logo-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--indigo),var(--cyan));display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.nav-group-label{font-size:11px;font-weight:800;color:#7B7996;padding:16px 12px 8px;}
.nav-link-xa{
  display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:12px;color:#C7C5DD;
  font-size:14px;font-weight:600;margin-bottom:2px;transition:background .15s ease,color .15s ease;
}
.nav-link-xa svg{flex-shrink:0;opacity:.85;}
.nav-link-xa:hover{background:rgba(255,255,255,0.06);color:#fff;}
.nav-link-xa.active{background:linear-gradient(135deg,var(--indigo),var(--indigo-deep));color:#fff;box-shadow:0 8px 20px -8px rgba(76,79,224,0.6);}
.sidebar-user{margin-top:auto;padding:14px 12px;border-top:1px solid rgba(255,255,255,0.08);display:flex;align-items:center;gap:10px;}
.sidebar-user .avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--indigo));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;color:#fff;flex-shrink:0;}
.sidebar-user small{color:#8987A6;font-size:11.5px;}
.sidebar-user strong{font-size:13px;color:#fff;display:block;}

.app-main{flex-grow:1;min-width:0;}
.app-topbar{
  background:rgba(250,247,241,0.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
  padding:18px 32px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50;
}
.app-topbar h1{font-size:22px;}
.app-topbar-right{display:flex;align-items:center;gap:16px;}
.credit-pill{
  display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,rgba(76,79,224,0.1),rgba(139,95,232,0.1));
  padding:8px 16px;border-radius:var(--radius-pill);font-weight:800;font-size:13.5px;color:var(--indigo);
}
.app-content{padding:32px;}

/* -------- Stat cards (dashboard overview) -------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;margin-bottom:32px;}
.stat-card-xa{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;position:relative;overflow:hidden;}
.stat-card-xa .stat-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.stat-card-xa .stat-value{font-family:var(--font-display);font-size:28px;font-weight:600;}
.stat-card-xa .stat-label{font-size:12.5px;color:var(--ink-faint);font-weight:700;margin-top:2px;}

/* -------- Generic dashboard table -------- */
.table-xa{width:100%;border-collapse:separate;border-spacing:0;}
.table-xa th{text-align:left;font-size:11.5px;text-transform:none;color:var(--ink-faint);font-weight:800;padding:10px 14px;border-bottom:1px solid var(--line);}
.table-xa td{padding:14px;border-bottom:1px solid var(--line);font-size:13.8px;vertical-align:middle;}
.table-xa tr:last-child td{border-bottom:none;}
.table-xa tr:hover td{background:rgba(76,79,224,0.03);}

/* -------- Upload dropzone -------- */
.dropzone{
  border:2px dashed var(--line);border-radius:var(--radius-lg);padding:44px 24px;text-align:center;
  background:var(--surface);cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.dropzone.dragover{border-color:var(--indigo);background:rgba(76,79,224,0.04);}
.dropzone .icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,var(--indigo),var(--violet));display:flex;align-items:center;justify-content:center;margin:0 auto 16px;}

/* -------- Tutor chat -------- */
.tutor-shell{display:grid;grid-template-columns:260px 1fr;gap:22px;height:calc(100vh - 180px);min-height:520px;}
.tutor-convo-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:14px;overflow-y:auto;}
.tutor-convo-item{padding:11px 12px;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--ink-soft);margin-bottom:4px;cursor:pointer;}
.tutor-convo-item.active,.tutor-convo-item:hover{background:rgba(76,79,224,0.08);color:var(--indigo);}
.tutor-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);display:flex;flex-direction:column;overflow:hidden;}
.tutor-messages{flex-grow:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:14px;}
.tutor-bubble{max-width:75%;padding:13px 17px;border-radius:16px;font-size:14.5px;line-height:1.55;}
.tutor-bubble.ai{background:var(--ivory);border-bottom-left-radius:4px;align-self:flex-start;}
.tutor-bubble.user{background:var(--ink);color:#fff;border-bottom-right-radius:4px;align-self:flex-end;}
.tutor-source-tag{font-size:10.5px;font-weight:800;color:var(--ink-faint);margin-top:6px;}
.tutor-quick-actions{display:flex;gap:8px;padding:0 24px 14px;flex-wrap:wrap;}
.tutor-quick-actions button{font-size:12px;font-weight:700;padding:7px 14px;border-radius:99px;border:1px solid var(--line);background:var(--surface);cursor:pointer;color:var(--ink-soft);}
.tutor-quick-actions button:hover{border-color:var(--indigo);color:var(--indigo);}
.tutor-input-row{display:flex;gap:10px;padding:18px 24px;border-top:1px solid var(--line);}
.tutor-input-row input{flex-grow:1;}

/* -------- Mock test player -------- */
.mocktest-shell{max-width:760px;margin:0 auto;}
.mocktest-timer-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;}
.mocktest-timer-bar .time{font-family:var(--font-display);font-size:24px;font-weight:600;color:var(--coral);}
.mocktest-option{
  display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--radius-md);
  border:1.5px solid var(--line);margin-bottom:10px;cursor:pointer;font-size:14.5px;background:var(--surface);
}
.mocktest-option:hover{border-color:var(--indigo);}
.mocktest-option.selected{border-color:var(--indigo);background:rgba(76,79,224,0.06);}
.mocktest-option.correct{border-color:var(--success);background:rgba(31,174,122,0.08);}
.mocktest-option.incorrect{border-color:var(--danger);background:rgba(228,72,59,0.06);}

@media (max-width:900px){
  .app-sidebar{position:fixed;left:-280px;z-index:200;transition:left .25s ease;}
  .app-sidebar.open{left:0;}
  .tutor-shell{grid-template-columns:1fr;}
  .tutor-convo-list{display:none;}
}