/* QuizIT — UI (Mixed Light/Dark Theme) */
:root {
  /* ── Brand palette ── */
  --primary:       #6c52e0;
  --primary-dark:  #4f3fd4;
  --primary-light: #ede9ff;
  --primary-mid:   #7c63f0;
  --accent:        #f59e0b;
  --accent-dark:   #d97706;
  --accent-light:  #fef3c7;

  /* ── Semantic colours (kept for backward compat) ── */
  --green:         #6c52e0;
  --green-dark:    #4f3fd4;
  --green-light:   #ede9ff;
  --green-mid:     #7c63f0;
  --amber:         #f59e0b;
  --amber-light:   #fef3c7;
  --blue:          #3b82f6;
  --blue-light:    #eff6ff;
  --red:           #ef4444;
  --red-light:     #fef2f2;
  --purple:        #6c52e0;
  --purple-light:  #ede9ff;
  --warning:       #f59e0b;

  /* ── App shell — light interior, dark sidebar ── */
  --app-bg:        #eeeaff;
  --sidebar-bg:    #1e1b4b;
  --sidebar-border:#2d2a6e;
  --surface:       #ffffff;
  --surface-2:     #f0eeff;
  --card-bg:       #ffffff;
  --card-border:   #d4ceff;

  /* ── Legacy aliases ── */
  --white:         #ffffff;
  --bg:            #eeeaff;
  --border:        #d4ceff;
  --border-dark:   #b8b0f0;
  --text:          #13112a;
  --text-muted:    #4a4770;
  --text-light:    #8b87b8;

  /* ── Grays (light mode) ── */
  --gray-50:       #f8f7ff;
  --gray-100:      #f0eeff;
  --gray-200:      #e0daff;
  --gray-300:      #c8c0f8;
  --gray-400:      #9490c0;
  --gray-500:      #5c5880;
  --gray-600:      #3d3a60;
  --gray-700:      #2a2750;
  --gray-800:      #1a1840;
  --gray-900:      #0f0d2a;

  /* ── Hero ── */
  --hero-bg:       #1e1b4b;
  --hero-bg2:      #13112a;

  /* ── Radii / shadows ── */
  --radius-sm:     4px;
  --radius:        8px;
  --radius-lg:     12px;
  --radius-xl:     16px;
  --shadow-sm:     0 1px 4px rgba(79,63,212,0.1), 0 1px 2px rgba(79,63,212,0.06);
  --shadow:        0 2px 8px rgba(79,63,212,0.12), 0 1px 3px rgba(79,63,212,0.08);
  --shadow-md:     0 4px 16px rgba(79,63,212,0.14), 0 2px 6px rgba(79,63,212,0.08);
  --shadow-lg:     0 10px 32px rgba(79,63,212,0.18), 0 4px 10px rgba(79,63,212,0.1);
  --transition:    all 0.15s ease;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background:var(--app-bg);color:var(--text);min-height:100vh;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;}
a{color:var(--primary);text-decoration:none;transition:var(--transition);}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
::-webkit-scrollbar{width:5px;height:5px;}
::-webkit-scrollbar-track{background:var(--gray-100);}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:3px;}

/* ── LAYOUT ── */
.layout-app{display:grid;grid-template-columns:220px 1fr;min-height:100vh;}
.main-content{padding:24px 28px 80px;background:var(--bg);min-height:100vh;}
.container{max-width:1100px;margin:0 auto;padding:0 24px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.flex{display:flex;} .flex-center{display:flex;align-items:center;justify-content:center;}
.flex-between{display:flex;align-items:center;justify-content:space-between;}
.gap-8{gap:8px;} .gap-12{gap:12px;} .gap-16{gap:16px;}
.mb-4{margin-bottom:4px;} .mb-8{margin-bottom:8px;} .mb-12{margin-bottom:12px;}
.mb-16{margin-bottom:16px;} .mb-20{margin-bottom:20px;} .mb-24{margin-bottom:24px;}
.mt-4{margin-top:4px;} .mt-8{margin-top:8px;} .mt-12{margin-top:12px;} .mt-16{margin-top:16px;}
.w-full{width:100%;}
.page-header{margin-bottom:20px;}
.page-title{font-size:1.1rem;font-weight:700;color:var(--gray-900);}
.page-subtitle{color:var(--text-muted);font-size:0.78rem;margin-top:2px;}

/* ── TOP NAV (app pages) ── */
.top-nav{
  background:var(--white);border-bottom:1px solid var(--border);
  padding:0 28px;height:52px;display:flex;align-items:center;
  justify-content:space-between;position:sticky;top:0;z-index:100;
  box-shadow:var(--shadow-sm);
}
.top-nav-logo{font-size:0.95rem;font-weight:800;color:var(--green);letter-spacing:-0.3px;}
.top-nav-links{display:flex;gap:4px;}
.top-nav-link{padding:6px 12px;border-radius:var(--radius);font-size:0.8rem;font-weight:500;color:var(--gray-600);transition:var(--transition);}
.top-nav-link:hover{background:var(--gray-100);color:var(--gray-900);}
.top-nav-link.active{color:var(--green);font-weight:600;}
.top-nav-right{display:flex;align-items:center;gap:8px;}

/* ── SIDEBAR ── */
.sidebar{
  background:var(--sidebar-bg);border-right:1px solid var(--sidebar-border);
  display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh;overflow-y:auto;
}
.sidebar-brand{
  padding:16px 18px 14px;border-bottom:1px solid var(--sidebar-border);
  display:flex;align-items:center;gap:10px;
}
.sidebar-brand-icon{
  width:32px;height:32px;
  background:linear-gradient(135deg,var(--primary-dark),var(--primary));
  border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:0 2px 8px rgba(108,82,224,0.4);
}
.sidebar-brand-icon svg{width:16px;height:16px;stroke:#fff;}
.sidebar-logo{font-size:0.92rem;font-weight:800;color:#f0eeff;letter-spacing:-0.3px;}
.sidebar-logo-sub{font-size:0.65rem;color:rgba(255,255,255,0.45);}
.sidebar-nav{padding:10px 10px;flex:1;}
.sidebar-section{font-size:0.62rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:rgba(255,255,255,0.3);padding:10px 8px 4px;}
.sidebar-item{
  display:flex;align-items:center;gap:8px;
  padding:7px 10px;border-radius:var(--radius);
  color:rgba(255,255,255,0.55);font-size:0.8rem;font-weight:500;
  transition:var(--transition);margin-bottom:1px;
}
.sidebar-item:hover{background:rgba(255,255,255,0.08);color:rgba(255,255,255,0.9);}
.sidebar-item.active{background:rgba(255,255,255,0.12);color:#fff;font-weight:600;}
.sidebar-icon{width:15px;height:15px;flex-shrink:0;opacity:0.6;}
.sidebar-item.active .sidebar-icon{opacity:1;}
.sidebar-badge{margin-left:auto;background:var(--accent);color:#1a1400;font-size:0.58rem;font-weight:700;padding:1px 5px;border-radius:8px;}
.sidebar-footer{padding:10px;border-top:1px solid var(--sidebar-border);}
.sidebar-user{display:flex;align-items:center;gap:8px;padding:7px 10px;}
.sidebar-user-name{font-size:0.78rem;font-weight:600;color:#f0eeff;}
.sidebar-user-role{font-size:0.65rem;color:rgba(255,255,255,0.4);}

/* ── AVATAR ── */
.avatar{border-radius:50%;background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;flex-shrink:0;}
.avatar-xs{width:24px;height:24px;font-size:0.6rem;}
.avatar-sm{width:30px;height:30px;font-size:0.68rem;}
.avatar-md{width:38px;height:38px;font-size:0.78rem;}
.avatar-lg{width:48px;height:48px;font-size:0.9rem;}
.avatar-xl{width:64px;height:64px;font-size:1.1rem;}

/* ── CARDS ── */
.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-sm);}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.card-title{font-size:0.82rem;font-weight:700;color:var(--gray-800);text-transform:uppercase;letter-spacing:0.4px;}
.card-link{font-size:0.75rem;color:var(--primary);}
.card-link:hover{color:var(--primary-dark);}

/* ── STAT CARDS ── */
.stat-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:14px;}
.stat-card-icon{width:36px;height:36px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.stat-card-icon svg{width:18px;height:18px;}
.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-900);line-height:1;}
.stat-label{font-size:0.68rem;font-weight:600;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-muted);margin-top:3px;}

/* ── HERO BANNER ── */
.hero-banner{
  background:linear-gradient(135deg,#1e1b4b 0%,#13112a 100%);
  border:1px solid rgba(108,82,224,0.3);
  border-radius:var(--radius-xl);padding:28px 32px;
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:20px;position:relative;overflow:hidden;
}
.hero-banner::before{
  content:'';position:absolute;right:-40px;top:-40px;
  width:200px;height:200px;border-radius:50%;
  background:rgba(108,82,224,0.15);pointer-events:none;
}
.hero-banner-eyebrow{font-size:0.68rem;text-transform:uppercase;letter-spacing:1.5px;color:rgba(255,255,255,0.45);margin-bottom:6px;font-weight:600;}
.hero-banner-title{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:6px;line-height:1.3;}
.hero-banner-title strong{color:#c4b5fd;}
.hero-banner-sub{font-size:0.8rem;color:rgba(255,255,255,0.55);line-height:1.5;max-width:420px;}
.hero-banner-done{background:linear-gradient(135deg,#1e1b4b,#13112a);}
.hero-banner-empty{background:var(--surface-2);border-color:var(--card-border);}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:7px 14px;border-radius:var(--radius);border:1px solid transparent;font-size:0.8rem;font-weight:600;transition:var(--transition);cursor:pointer;white-space:nowrap;line-height:1.4;}
.btn:disabled{opacity:0.4;cursor:not-allowed;}
.btn-primary{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;border-color:transparent;box-shadow:0 2px 8px rgba(108,82,224,0.3);}
.btn-primary:hover{background:linear-gradient(135deg,#3d2fb8,var(--primary-dark));box-shadow:0 4px 14px rgba(108,82,224,0.4);}
.btn-secondary{background:#ede9ff;color:var(--primary-dark);border-color:#c4b5fd;}
.btn-secondary:hover{background:#ddd6fe;border-color:var(--primary);}
.btn-white{background:#fff;color:var(--primary);border-color:#fff;font-weight:600;}
.btn-white:hover{background:#ede9ff;}
.btn-danger{background:#fef2f2;color:#dc2626;border-color:#fecaca;}
.btn-danger:hover{background:#fecaca;border-color:#dc2626;}
.btn-ghost{background:transparent;color:var(--text-muted);border-color:transparent;}
.btn-ghost:hover{background:var(--gray-100);color:var(--gray-800);}
.btn-sm{padding:5px 10px;font-size:0.75rem;}
.btn-lg{padding:9px 18px;font-size:0.85rem;}
.btn-xl{padding:11px 22px;font-size:0.88rem;}

/* ── BADGES ── */
.badge{display:inline-flex;align-items:center;gap:3px;padding:2px 7px;border-radius:20px;font-size:0.68rem;font-weight:500;}
.badge-green  {background:#ede9ff;color:#4f3fd4;}
.badge-success{background:#ede9ff;color:#4f3fd4;}
.badge-amber  {background:#fef3c7;color:#d97706;}
.badge-blue   {background:#eff6ff;color:#2563eb;}
.badge-red    {background:#fef2f2;color:#dc2626;}
.badge-purple {background:#ede9ff;color:#4f3fd4;}
.badge-neutral{background:#f0eeff;color:var(--text-muted);}
.badge-primary{background:#ede9ff;color:#4f3fd4;}
/* chip aliases */
.chip{display:inline-flex;align-items:center;gap:3px;padding:2px 7px;border-radius:20px;font-size:0.68rem;font-weight:500;}
.chip-green{background:#ede9ff;color:#4f3fd4;}
.chip-gold{background:#fef3c7;color:#d97706;}
.chip-purple{background:#ede9ff;color:#4f3fd4;}
.chip-red{background:#fef2f2;color:#dc2626;}
.chip-gray{background:#f0eeff;color:var(--text-muted);}

/* ── FORMS ── */
.form-group{margin-bottom:14px;}
.form-label{display:block;font-size:0.72rem;font-weight:600;color:var(--gray-600);margin-bottom:4px;text-transform:uppercase;letter-spacing:0.3px;}
.form-input{width:100%;padding:8px 10px;background:#fff;border:1px solid var(--border-dark);border-radius:var(--radius);color:var(--text);font-size:0.82rem;transition:var(--transition);}
.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,82,224,0.12);}
.form-input::placeholder{color:var(--text-light);}
.form-input option{background:#fff;color:var(--text);}
.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6899' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 9px center;padding-right:28px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}

/* ── PROGRESS ── */
.progress{height:5px;background:var(--gray-200);border-radius:3px;overflow:hidden;}
.progress-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,var(--primary-dark),var(--primary-mid));transition:width 0.4s ease;}
.progress-fill.amber{background:linear-gradient(90deg,var(--accent-dark),var(--accent));}
.progress-lg{height:7px;}
.progress-xl{height:9px;border-radius:5px;}

/* ── ALERTS ── */
.alert{padding:10px 12px;border-radius:var(--radius);font-size:0.8rem;display:flex;align-items:flex-start;gap:8px;margin-bottom:14px;border:1px solid;}
.alert-success{background:#ede9ff;border-color:#c4b5fd;color:#4f3fd4;}
.alert-error  {background:#fef2f2;border-color:#fecaca;color:#dc2626;}
.alert-info   {background:#eff6ff;border-color:#bfdbfe;color:#2563eb;}
.alert-warning{background:#fef3c7;border-color:#fde68a;color:#d97706;}

/* ── DIVIDER ── */
.divider{height:1px;background:var(--border);margin:14px 0;}
.divider-text{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:0.72rem;margin:14px 0;}
.divider-text::before,.divider-text::after{content:'';flex:1;height:1px;background:var(--border);}

/* ── TABLES ── */
.table-wrap{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);}
.table-head{padding:12px 18px;border-bottom:1px solid var(--card-border);display:flex;align-items:center;justify-content:space-between;}
.table-title{font-size:0.8rem;font-weight:700;color:var(--gray-800);text-transform:uppercase;letter-spacing:0.4px;}
table{width:100%;border-collapse:collapse;}
thead th{padding:9px 14px;text-align:left;font-size:0.68rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px;background:var(--gray-50);border-bottom:1px solid var(--card-border);}
tbody td{padding:11px 14px;font-size:0.8rem;border-bottom:1px solid var(--gray-100);color:var(--gray-700);vertical-align:middle;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover td{background:var(--gray-50);}

/* ── STATUS DOTS ── */
.dot{width:7px;height:7px;border-radius:50%;display:inline-block;margin-right:5px;}
.dot-live     {background:var(--green);}
.dot-archived {background:var(--gray-400);}
.dot-scheduled{background:var(--amber);}
.dot-draft    {background:var(--gray-300);}

/* ── ACTION BUTTONS ── */
.action-btn{padding:3px 9px;border-radius:var(--radius-sm);font-size:0.7rem;font-weight:500;cursor:pointer;border:1px solid;transition:var(--transition);}
.action-btn.set-live{background:#ede9ff;color:#4f3fd4;border-color:#c4b5fd;}
.action-btn.set-live:hover{background:#ddd6fe;}
.action-btn.archive{background:var(--gray-100);color:var(--gray-600);border-color:var(--border-dark);}
.action-btn.archive:hover{background:var(--gray-200);}
.action-btn.del{background:#fef2f2;color:#dc2626;border-color:#fecaca;}
.action-btn.del:hover{background:#fecaca;}
.action-btn.reset{background:#fef3c7;color:#d97706;border-color:#fde68a;}
.action-btn.reset:hover{background:#fde68a;}

/* ── LEADERBOARD ── */
.lb-row{display:flex;align-items:center;gap:10px;padding:9px 12px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);margin-bottom:5px;transition:var(--transition);}
.lb-row:hover{background:var(--gray-50);}
.lb-row.you{border-color:var(--primary);background:#ede9ff;}
.lb-row.gold-row  {border-left:3px solid var(--accent);}
.lb-row.silver-row{border-left:3px solid var(--gray-400);}
.lb-row.bronze-row{border-left:3px solid #92400e;}
.lb-rank{width:24px;text-align:center;font-weight:600;font-size:0.78rem;color:var(--text-muted);flex-shrink:0;}

/* ── QUEST CARDS ── */
.quest-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:18px;transition:var(--transition);display:flex;flex-direction:column;box-shadow:var(--shadow-sm);}
.quest-card:hover:not(.locked){box-shadow:var(--shadow-md);border-color:var(--primary);}
.quest-card.active{border-top:2px solid var(--primary);}
.quest-card.completed{border-top:2px solid var(--accent);}
.quest-card.locked{opacity:0.5;}
.quest-icon-wrap{width:36px;height:36px;border-radius:var(--radius);background:#ede9ff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;margin-bottom:10px;}
.stage-track{display:flex;gap:3px;margin-bottom:8px;}
.stage-dot{flex:1;height:3px;border-radius:2px;background:var(--gray-200);}
.stage-dot.done{background:var(--primary);}
.stage-dot.current{background:var(--accent);}
.quest-footer{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}

/* ── BADGE CARDS ── */
.badge-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:16px;text-align:center;transition:var(--transition);position:relative;box-shadow:var(--shadow-sm);}
.badge-card.earned{border-color:var(--primary);}
.badge-card.earned:hover{box-shadow:var(--shadow-md);}
.badge-card.locked{opacity:0.4;}
.badge-card.rare{border-color:var(--accent);}
.badge-card.rare::after{content:'RARE';position:absolute;top:7px;right:7px;font-size:0.55rem;font-weight:700;color:#d97706;background:#fef3c7;padding:1px 5px;border-radius:3px;}
.badge-emoji{font-size:1.8rem;margin-bottom:7px;display:block;}
.badge-name{font-size:0.78rem;font-weight:600;color:var(--gray-800);margin-bottom:2px;}
.badge-desc{font-size:0.68rem;color:var(--text-muted);line-height:1.5;margin-bottom:5px;}
.badge-xp{font-size:0.68rem;color:var(--accent-dark);font-weight:600;}

/* ── PODIUM ── */
.podium-wrap{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:20px 14px 0;margin-bottom:16px;box-shadow:var(--shadow-sm);overflow:hidden;}
.podium{display:flex;align-items:flex-end;justify-content:center;gap:8px;}
.podium-item{text-align:center;display:flex;flex-direction:column;align-items:center;}
.podium-avatar{border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;margin:0 auto 5px;border:2px solid;}
.podium-1 .podium-avatar{width:46px;height:46px;font-size:0.88rem;border-color:var(--accent);background:#fef3c7;color:#d97706;}
.podium-2 .podium-avatar{width:38px;height:38px;font-size:0.78rem;border-color:var(--gray-400);background:var(--gray-100);color:var(--gray-600);}
.podium-3 .podium-avatar{width:34px;height:34px;font-size:0.72rem;border-color:#92400e;background:#fef3c7;color:#92400e;}
.podium-name{font-size:0.68rem;font-weight:600;color:var(--gray-700);margin-bottom:1px;}
.podium-xp{font-size:0.62rem;color:var(--text-muted);margin-bottom:5px;}
.podium-stand{border-radius:3px 3px 0 0;display:flex;align-items:center;justify-content:center;font-size:0.7rem;font-weight:700;width:60px;color:var(--text-muted);}
.podium-1 .podium-stand{height:56px;background:#fef3c7;color:#d97706;}
.podium-2 .podium-stand{height:40px;background:var(--gray-100);}
.podium-3 .podium-stand{height:28px;background:var(--gray-50);}

/* ── CHART ── */
.chart-bars{display:flex;align-items:flex-end;gap:5px;height:110px;padding:0 2px;}
.chart-bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end;}
.chart-bar{width:100%;border-radius:2px 2px 0 0;background:#ede9ff;min-height:3px;transition:all 0.3s ease;}
.chart-bar:hover{background:var(--primary);}
.chart-bar.today{background:linear-gradient(180deg,var(--primary-mid),var(--primary-dark));}
.chart-label{font-size:0.6rem;color:var(--text-muted);}

/* ── MODAL ── */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(30,27,75,0.4);z-index:500;align-items:center;justify-content:center;}
.modal-overlay.open{display:flex;}
.modal{background:#fff;border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:24px;width:440px;max-width:92vw;box-shadow:var(--shadow-lg);}
.modal-title{font-size:0.95rem;font-weight:700;color:var(--gray-900);margin-bottom:16px;}

/* ── SCREEN NAV ── */
.screen-nav{position:fixed;bottom:14px;left:50%;transform:translateX(-50%);background:var(--surface-2);border:1px solid var(--card-border);border-radius:30px;padding:5px 10px;display:flex;gap:3px;z-index:999;font-size:0.68rem;box-shadow:var(--shadow-md);}
.screen-nav a{color:var(--text-muted);padding:3px 7px;border-radius:20px;transition:var(--transition);}
.screen-nav a:hover{background:var(--primary);color:#fff;}
.screen-label{position:fixed;bottom:10px;right:10px;background:var(--primary);color:#fff;padding:3px 9px;border-radius:20px;font-size:0.62rem;font-weight:600;opacity:0.85;z-index:999;}

/* ── UTILITY ── */
.text-green {color:var(--green);}
.text-amber {color:var(--amber);}
.text-red   {color:var(--red);}
.text-blue  {color:var(--blue);}
.text-muted {color:var(--text-muted);}
.text-sm    {font-size:0.8rem;}
.text-xs    {font-size:0.7rem;}
.font-bold  {font-weight:600;}
.font-black {font-weight:700;}
.truncate   {overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
/* legacy color aliases */
.text-primary{color:var(--green);}
.text-accent {color:var(--green-mid);}
.text-gold   {color:var(--amber);}

/* ════════════════════════════════════
   PAGE-SPECIFIC
   ════════════════════════════════════ */

/* ── PUBLIC NAV ── */
.pub-nav{display:flex;align-items:center;justify-content:space-between;padding:0 40px;height:52px;border-bottom:1px solid var(--sidebar-border);background:var(--sidebar-bg);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm);}
.pub-nav-logo{font-size:0.95rem;font-weight:800;color:#c4b5fd;}
.pub-nav-links{display:flex;gap:4px;}
.pub-nav-links a{padding:6px 10px;border-radius:var(--radius);font-size:0.8rem;font-weight:500;color:var(--text-muted);}
.pub-nav-links a:hover{background:rgba(108,82,224,0.12);color:#c4b5fd;}

/* ── HERO (landing) ── */
.hero{min-height:calc(100vh - 52px);display:flex;align-items:center;padding:48px 40px;gap:60px;max-width:1100px;margin:0 auto;}
.hero-text{flex:1;}
.hero-eyebrow{display:inline-block;background:var(--green-light);color:var(--green);padding:3px 10px;border-radius:20px;font-size:0.7rem;font-weight:600;margin-bottom:18px;}
.hero-title{font-size:2.6rem;font-weight:800;line-height:1.1;letter-spacing:-1px;margin-bottom:14px;color:var(--gray-900);}
.hero-title .g1{color:var(--green);}
.hero-title .g2{color:var(--amber);}
.hero-desc{color:var(--text-muted);font-size:0.9rem;line-height:1.7;margin-bottom:24px;max-width:420px;}
.hero-cta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:36px;}
.hero-stats{display:flex;gap:24px;padding-top:20px;border-top:1px solid var(--border);}
.hero-stat-val{font-size:1.3rem;font-weight:700;color:var(--gray-900);}
.hero-stat-lbl{font-size:0.68rem;color:var(--text-muted);margin-top:1px;}
.hero-visual{flex-shrink:0;width:320px;position:relative;}
.phone-frame{background:var(--white);border:1px solid var(--border);border-radius:16px;padding:14px;box-shadow:var(--shadow-lg);}
.phone-notch{width:40px;height:5px;background:var(--gray-200);border-radius:3px;margin:0 auto 12px;}
.phone-challenge{background:var(--hero-bg);border-radius:8px;padding:12px;margin-bottom:9px;color:#fff;}
.phone-ch-label{font-size:0.58rem;opacity:0.6;text-transform:uppercase;letter-spacing:1px;margin-bottom:3px;}
.phone-ch-q{font-size:0.78rem;font-weight:600;margin-bottom:7px;}
.phone-ch-xp{font-size:0.65rem;color:#4ade80;}
.phone-opts{display:flex;flex-direction:column;gap:4px;}
.phone-opt{background:var(--gray-50);border:1px solid var(--border);border-radius:5px;padding:6px 9px;font-size:0.68rem;color:var(--gray-700);}
.phone-opt.sel{border-color:var(--green);background:var(--green-light);color:var(--green);font-weight:500;}
.float-card{position:absolute;background:var(--white);border:1px solid var(--border);border-radius:7px;padding:7px 10px;font-size:0.68rem;box-shadow:var(--shadow-md);}
.float-card.tr{top:-6px;right:-10px;}
.float-card.bl{bottom:10px;left:-14px;}
.float-val{font-weight:700;font-size:0.82rem;margin-top:1px;color:var(--gray-800);}
.features-section{padding:56px 40px;max-width:1100px;margin:0 auto;}
.features-title{text-align:center;font-size:1.5rem;font-weight:700;color:var(--gray-900);margin-bottom:5px;}
.features-sub{text-align:center;color:var(--text-muted);margin-bottom:32px;font-size:0.82rem;}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.feature-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;transition:var(--transition);box-shadow:var(--shadow-sm);}
.feature-card:hover{box-shadow:var(--shadow-md);border-color:var(--border-dark);}
.feature-icon{width:32px;height:32px;background:var(--green-light);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;margin-bottom:10px;}
.feature-icon svg{width:16px;height:16px;stroke:var(--green);}
.feature-title{font-size:0.85rem;font-weight:600;color:var(--gray-800);margin-bottom:5px;}
.feature-desc{color:var(--text-muted);font-size:0.78rem;line-height:1.6;}
.pub-footer{border-top:1px solid var(--border);padding:18px 40px;text-align:center;color:var(--text-muted);font-size:0.75rem;background:var(--white);}

/* ── AUTH (legacy classes kept for compat) ── */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:28px 20px;background:var(--app-bg);}
.auth-split{display:flex;gap:40px;align-items:center;max-width:800px;width:100%;}
.auth-brand{flex:1;}
.auth-logo{font-size:1.6rem;font-weight:800;color:#c4b5fd;letter-spacing:-0.5px;margin-bottom:7px;}
.auth-tagline{color:var(--text-muted);font-size:0.82rem;line-height:1.65;margin-bottom:20px;}
.info-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:10px 12px;display:flex;align-items:center;gap:10px;margin-bottom:7px;box-shadow:var(--shadow-sm);}
.info-icon{width:28px;height:28px;background:rgba(108,82,224,0.15);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.info-icon svg{width:14px;height:14px;stroke:#c4b5fd;}
.info-title{font-size:0.78rem;font-weight:600;color:var(--gray-800);margin-bottom:1px;}
.info-sub{font-size:0.68rem;color:var(--text-muted);}
.auth-card{width:360px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:24px;box-shadow:var(--shadow-lg);flex-shrink:0;}
.auth-card-title{font-size:1.15rem;font-weight:700;color:var(--gray-900);margin-bottom:2px;}
.auth-card-sub{color:var(--text-muted);font-size:0.78rem;margin-bottom:18px;}
.remember-row{display:flex;align-items:center;gap:6px;font-size:0.75rem;color:var(--text-muted);margin-bottom:12px;}
.remember-row input{accent-color:var(--primary);}
.daily-tip{background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.2);border-radius:var(--radius);padding:9px 11px;font-size:0.72rem;color:#fcd34d;margin-top:12px;text-align:center;}
.reg-wrap{min-height:100vh;display:flex;}
.reg-left{flex:1;background:linear-gradient(135deg,#1e1b4b,#13112a);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:36px;}
.reg-left-inner{max-width:300px;}
.reg-logo{font-size:1.6rem;font-weight:800;color:#fff;letter-spacing:-0.5px;margin-bottom:5px;}
.reg-tagline{color:rgba(255,255,255,0.5);font-size:0.82rem;margin-bottom:28px;}
.reg-feature{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,0.06);border-radius:var(--radius);padding:10px 12px;margin-bottom:7px;}
.reg-feature-icon{width:26px;height:26px;background:rgba(108,82,224,0.2);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.reg-feature-icon svg{width:13px;height:13px;stroke:#c4b5fd;}
.reg-feature-title{font-size:0.78rem;font-weight:600;color:#fff;margin-bottom:1px;}
.reg-feature-sub{font-size:0.68rem;color:rgba(255,255,255,0.45);}
.reg-right{width:460px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;padding:36px;overflow-y:auto;}
.reg-form{width:100%;}
.reg-title{font-size:1.2rem;font-weight:700;color:var(--gray-900);margin-bottom:2px;}
.reg-sub{color:var(--text-muted);font-size:0.78rem;margin-bottom:18px;}
.step-bar{display:flex;gap:4px;margin-bottom:18px;}
.step-seg{flex:1;height:2px;border-radius:2px;background:rgba(255,255,255,0.08);}
.step-seg.active{background:var(--primary);}

/* ── DASHBOARD ── */
.greeting-line{font-size:1.1rem;font-weight:700;color:var(--gray-900);margin-bottom:2px;}
.greeting-sub{color:var(--text-muted);font-size:0.78rem;margin-bottom:16px;}
.level-badge{display:inline-flex;align-items:center;background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:2px 8px;border-radius:20px;font-size:0.68rem;font-weight:600;}
.xp-bar-wrap{height:6px;background:var(--gray-200);border-radius:3px;overflow:hidden;}
.xp-bar-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,var(--primary-dark),var(--primary-mid));transition:width 0.5s ease;}
.activity-row{display:flex;align-items:center;gap:9px;padding:8px 0;border-bottom:1px solid var(--gray-100);}
.activity-row:last-child{border-bottom:none;}
.activity-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0;}
.activity-title{font-size:0.78rem;color:var(--gray-700);}
.activity-sub{font-size:0.68rem;color:var(--text-muted);margin-top:1px;}
.activity-xp{margin-left:auto;color:var(--accent-dark);font-weight:600;font-size:0.75rem;flex-shrink:0;}
.quest-row{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:9px 11px;display:flex;align-items:center;gap:9px;margin-bottom:6px;transition:var(--transition);}
.quest-row:hover{border-color:var(--primary);background:var(--gray-50);}
.quest-row-icon{width:28px;height:28px;background:#ede9ff;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:0.9rem;}
.quest-row-title{font-size:0.78rem;font-weight:500;color:var(--gray-800);}
.quest-row-sub{font-size:0.68rem;color:var(--text-muted);margin:1px 0;}

/* ── CHALLENGE ── */
.ch-topbar{display:flex;align-items:center;gap:10px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--card-border);}
.ch-back{color:var(--text-muted);font-size:0.78rem;display:flex;align-items:center;gap:3px;}
.ch-back:hover{color:var(--gray-800);}
.ch-layout{display:grid;grid-template-columns:1fr 260px;gap:16px;}
.q-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:18px;margin-bottom:10px;box-shadow:var(--shadow-sm);}
.q-num{font-size:0.65rem;font-weight:600;text-transform:uppercase;letter-spacing:0.8px;color:var(--text-muted);margin-bottom:5px;}
.q-text{font-size:0.88rem;font-weight:600;color:var(--gray-900);line-height:1.5;margin-bottom:14px;}
.opt{background:var(--gray-50);border:1px solid var(--border-dark);border-radius:var(--radius);padding:9px 12px;cursor:pointer;display:flex;align-items:center;gap:9px;transition:var(--transition);font-size:0.8rem;color:var(--gray-700);margin-bottom:6px;}
.opt:hover{border-color:var(--primary);background:#ede9ff;color:var(--primary-dark);}
.opt input[type="radio"]{accent-color:var(--primary);flex-shrink:0;}
.opt-letter{width:22px;height:22px;border-radius:var(--radius-sm);background:var(--gray-200);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:0.7rem;flex-shrink:0;color:var(--gray-600);}
.opt.correct-ans{border-color:var(--primary);background:#ede9ff;color:var(--primary-dark);}
.opt.correct-ans .opt-letter{background:var(--primary);color:#fff;}
.opt.wrong-ans{border-color:#dc2626;background:#fef2f2;color:#dc2626;}
.opt.wrong-ans .opt-letter{background:#dc2626;color:#fff;}
.explanation{background:#ede9ff;border:1px solid #c4b5fd;border-radius:var(--radius);padding:10px;margin-top:9px;font-size:0.75rem;color:var(--primary-dark);line-height:1.6;}
.sidebar-info{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:14px;margin-bottom:10px;box-shadow:var(--shadow-sm);}
.xp-box{background:#fef3c7;border:1px solid #fde68a;border-radius:var(--radius);padding:12px;text-align:center;margin-bottom:10px;}
.xp-box-val{font-size:1.4rem;font-weight:700;color:#d97706;}
.xp-box-lbl{font-size:0.68rem;color:#d97706;margin-top:2px;opacity:0.8;}
.result-hero{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:24px;text-align:center;margin-bottom:16px;box-shadow:var(--shadow-md);}
.result-score{font-size:2.8rem;font-weight:700;color:var(--primary);letter-spacing:-2px;}
.result-xp{font-size:1rem;font-weight:600;color:var(--accent-dark);margin-top:5px;}
.empty-state{text-align:center;padding:52px 20px;}
.empty-icon{width:48px;height:48px;background:var(--gray-100);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;}
.empty-icon svg{width:22px;height:22px;stroke:var(--gray-400);}
.empty-title{font-size:1rem;font-weight:600;color:var(--gray-800);margin-bottom:5px;}
.empty-sub{color:var(--text-muted);font-size:0.8rem;margin-bottom:16px;}

/* ── PROFILE ── */
.profile-hero{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:20px 24px;display:flex;align-items:center;gap:16px;margin-bottom:16px;box-shadow:var(--shadow-sm);}
.profile-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px;}
.profile-stat{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:12px;text-align:center;box-shadow:var(--shadow-sm);}
.profile-stat-val{font-size:1.4rem;font-weight:700;color:var(--gray-900);}
.profile-stat-lbl{font-size:0.65rem;color:var(--text-muted);margin-top:2px;text-transform:uppercase;letter-spacing:0.3px;}
.topic-row{display:flex;align-items:center;gap:9px;margin-bottom:8px;}
.topic-name{width:110px;font-size:0.75rem;color:var(--gray-600);flex-shrink:0;}
.topic-pct{width:30px;text-align:right;font-size:0.7rem;font-weight:600;flex-shrink:0;}
.info-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--gray-100);font-size:0.78rem;}
.info-row:last-child{border-bottom:none;}
.info-label{color:var(--text-muted);}
.info-val{font-weight:500;color:var(--gray-800);}

/* ── LEADERBOARD ── */
.your-rank-card{background:#ede9ff;border:1px solid #c4b5fd;border-radius:var(--radius-xl);padding:14px 18px;display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.filter-bar{display:flex;gap:7px;margin-bottom:14px;}

/* ── BADGES ── */
.badges-summary{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:18px 22px;display:flex;align-items:center;gap:24px;margin-bottom:20px;box-shadow:var(--shadow-sm);}
.summary-stat{text-align:center;}
.summary-val{font-size:1.5rem;font-weight:700;color:var(--gray-900);}
.summary-lbl{font-size:0.65rem;color:var(--text-muted);margin-top:2px;text-transform:uppercase;letter-spacing:0.3px;}
.cat-header{display:flex;align-items:center;gap:7px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--card-border);}
.cat-title{font-size:0.82rem;font-weight:700;color:var(--gray-800);}
.cat-count{font-size:0.68rem;color:var(--text-muted);margin-left:auto;}
.cat-section{margin-bottom:24px;}

/* ── ADMIN ── */
.admin-stat{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:16px 18px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:12px;}
.admin-stat-icon{width:34px;height:34px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.admin-stat-icon svg{width:17px;height:17px;}
.admin-stat-val{font-size:1.5rem;font-weight:700;color:var(--gray-900);}
.admin-stat-lbl{font-size:0.65rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.4px;margin-top:2px;}
.featured-quest{background:#ede9ff;border:1px solid #c4b5fd;border-radius:var(--radius-xl);padding:16px 20px;display:flex;align-items:center;gap:14px;margin-bottom:20px;}

/* ════════════════════════════════════
   MOBILE RESPONSIVE
   ════════════════════════════════════ */

/* ── Hamburger button (mobile only) ── */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--sidebar-bg);
    border: 1px solid var(--sidebar-border);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}
.mobile-menu-btn svg { width: 18px; height: 18px; stroke: #fff; }

/* ── Sidebar overlay (mobile) ── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; }

/* ── Tablet: 768px–1024px ── */
@media (max-width: 1024px) {
    .layout-app { grid-template-columns: 180px 1fr; }
    .main-content { padding: 20px 18px 80px; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .ch-layout { grid-template-columns: 1fr; }
    .ch-layout > div:last-child { display: none; }
    .profile-stats { grid-template-columns: repeat(2, 1fr); }
    .lp-features-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Mobile: < 768px ── */
@media (max-width: 768px) {

    /* Show hamburger */
    .mobile-menu-btn { display: flex; }

    /* Layout: full width, no sidebar column */
    .layout-app { grid-template-columns: 1fr; }

    /* Sidebar: hidden off-screen by default */
    .sidebar {
        position: fixed;
        left: -240px;
        top: 0;
        width: 240px;
        height: 100vh;
        z-index: 1000;
        transition: left 0.25s ease;
        box-shadow: var(--shadow-lg);
    }
    .sidebar.open { left: 0; }

    /* Main content: full width with top padding for hamburger */
    .main-content {
        padding: 60px 14px 80px;
        min-height: 100vh;
    }

    /* Grids: single column */
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

    /* Challenge layout: single column */
    .ch-layout { grid-template-columns: 1fr; }
    .ch-layout > div:last-child { display: none; }

    /* Profile stats: 2 columns */
    .profile-stats { grid-template-columns: repeat(2, 1fr); }

    /* Page header: stack on mobile */
    .page-header.flex-between { flex-direction: column; align-items: flex-start; gap: 8px; }

    /* Hero banner: stack */
    .hero-banner { flex-direction: column; gap: 14px; padding: 20px 16px; }
    .hero-banner > a, .hero-banner > span { align-self: flex-start; }

    /* Tables: horizontal scroll */
    .table-wrap { overflow-x: auto; }
    table { min-width: 600px; }

    /* Stat cards: 2 per row */
    .grid-4 { grid-template-columns: repeat(2, 1fr); }

    /* Quest cards: single column */
    .grid-3 { grid-template-columns: 1fr; }

    /* Featured quest: stack */
    .featured-quest { flex-direction: column; align-items: flex-start; gap: 10px; }

    /* Filter bar: wrap */
    .filter-bar { flex-wrap: wrap; }

    /* Badges summary: wrap */
    .badges-summary { flex-wrap: wrap; gap: 16px; }

    /* Form rows: single column */
    .form-row { grid-template-columns: 1fr; }

    /* Modal: full width */
    .modal { width: 95vw; padding: 20px 16px; }

    /* Leaderboard: hide some columns */
    .lb-row { gap: 6px; padding: 8px; }

    /* Page title size */
    .page-title { font-size: 1rem; }

    /* Landing features: single column */
    .lp-features-grid { grid-template-columns: 1fr; }
    .lp-features { padding: 40px 16px; }
    .lp-cta-banner { margin: 0 16px 40px; padding: 28px 20px; }
    .lp-nav { padding: 0 16px; }
    .lp-nav-links { display: none; }
    .lp-hero { padding: 40px 16px 60px; }
    .lp-title { font-size: clamp(1.8rem, 8vw, 3rem); }

    /* Admin table: scroll */
    .admin-stat { padding: 12px 14px; }
    .admin-stat-val { font-size: 1.2rem; }
}

/* ── Small mobile: < 480px ── */
@media (max-width: 480px) {
    .grid-4 { grid-template-columns: 1fr; }
    .profile-stats { grid-template-columns: repeat(2, 1fr); }
    .stat-value { font-size: 1.3rem; }
    .result-score { font-size: 2rem; }
    .main-content { padding: 56px 12px 80px; }
}