/* ============================================================
   نجمة الدروس — ورق دافئ نهاري
   ============================================================ */

:root{
  --paper:#FAF6EC;
  --card:#F3EADA;
  --sand:#D9C6A3;
  --line:#E7D8BC;
  --ink:#1E2A24;
  --ink-soft:#5F6E64;
  --green:#006C35;
  --green-dark:#00532A;
  --mint:#CFE8DA;
  --mint-deep:#B7DCC8;
  --gold:#E8B73A;
  --gold-soft:#F7E7B8;
  --star-off:#B9AE97;
  --brick:#A8321F;
  --brick-soft:#F2DCD6;
  --radius:14px;
  --shadow:0 2px 0 rgba(0,0,0,.04);
}

*{box-sizing:border-box}
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100dvh;
  font-family:"IBM Plex Sans Arabic",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:"Noto Kufi Arabic","IBM Plex Sans Arabic",system-ui,sans-serif;
  font-weight:700;
  line-height:1.5;
  margin:0;
  letter-spacing:0;
}
p{margin:0}
button{font-family:inherit;color:inherit}
button,input,textarea{user-select:auto;-webkit-user-select:auto}
button,.tab,.chip,.star-btn,.stage-card,.subject-card{-webkit-tap-highlight-color:transparent}
button{user-select:none;-webkit-user-select:none}

/* ورق مثلثات سدوية 4% */
.paper-bg{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-color:var(--paper);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='46' height='40' viewBox='0 0 46 40'%3E%3Cpath d='M23 3 43 37H3Z' fill='none' stroke='%231E2A24' stroke-width='1.2' opacity='0.04'/%3E%3C/svg%3E");
  background-size:46px 40px;
}

.app{
  position:relative;
  z-index:1;
  max-width:640px;
  margin-inline:auto;
  padding:0 16px 108px;
}

/* ---------------- topbar ---------------- */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:16px 0 8px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-star{width:38px;height:35px;flex:0 0 auto}
.brand-star svg{width:100%;height:100%;display:block}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{
  font-family:"Noto Kufi Arabic",sans-serif;
  font-weight:700;
  font-size:19px;
  line-height:1.25;
  color:var(--green);
}
.brand-sub{font-size:12.5px;line-height:1.4;color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.avatar-btn{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:50%;
  background:var(--green);
  color:#fff;
  border:2px solid #fff;
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:17px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  box-shadow:var(--shadow);
  transition:transform .12s ease,background-color .16s ease;
}
.avatar-btn:hover{background:var(--green-dark)}
.avatar-btn:active{transform:scale(.95)}
.avatar-btn:focus-visible{outline:3px solid var(--green);outline-offset:3px}

/* ---------------- screens ---------------- */
.screen{display:none;padding-top:4px}
.screen.is-active{display:block;animation:fadeUp .28s ease-out both}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.section-title{font-size:20px;color:var(--green);margin-top:18px}
.section-sub{font-size:15.5px;color:var(--ink-soft);margin-top:2px;margin-bottom:16px}
.mini-title{font-size:16.5px;color:var(--ink);margin:26px 0 10px}

/* ---------------- hero / auth ---------------- */
.hero{text-align:center;padding:6px 0 20px}
.mascot-wrap{width:128px;height:118px;margin:0 auto 10px;position:relative}
.mascot-wrap::before{
  content:"";
  position:absolute;
  inset:-10px -4px -4px;
  border-radius:50%;
  background:radial-gradient(circle at 50% 45%,rgba(207,232,218,.95),rgba(250,246,236,0) 72%);
}
.mascot{
  position:relative;
  width:100%;height:100%;
  display:block;
  animation:floaty 6s ease-in-out infinite;
  transform-origin:50% 50%;
}

/* شعار: خريطة السعودية خضراء وكتاب مفتوح أبيض */
.logo-map{fill:var(--green);stroke:var(--green-dark);stroke-width:1.6;stroke-linejoin:round}
.logo-page{fill:#FFFDF7}
@keyframes floaty{
  0%,100%{transform:translateY(0) rotate(-3deg)}
  50%{transform:translateY(-7px) rotate(3deg)}
}
.hero-title{font-size:23px;color:var(--green)}
.hero-sub{font-size:15.5px;color:var(--ink-soft);margin-top:8px;max-width:46ch;margin-inline:auto}

.card{
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.auth-card{padding:18px;display:flex;flex-direction:column;gap:15px}

.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field-label{font-size:15px;font-weight:600;color:var(--ink)}
.optional{font-weight:400;color:var(--ink-soft);font-size:13.5px}
.field-help{font-size:13px;color:var(--ink-soft);line-height:1.6}
.field-error{
  font-size:14.5px;
  font-weight:500;
  color:var(--brick);
  background:var(--brick-soft);
  border:1px solid rgba(168,50,31,.25);
  border-radius:10px;
  padding:8px 12px;
  line-height:1.6;
}

.input{
  width:100%;
  min-height:50px;
  padding:11px 14px;
  border:1px solid var(--sand);
  border-radius:12px;
  background:#FFFDF7;
  color:var(--ink);
  font-family:inherit;
  font-size:17px;
  line-height:1.7;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.input::placeholder{color:#8C8674}
.input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(0,108,53,.14)}
.input[aria-invalid="true"]{border-color:var(--brick);box-shadow:0 0 0 3px rgba(168,50,31,.12)}
.textarea{resize:vertical;min-height:96px;line-height:1.8}
.id-input{
  font-size:22px;
  letter-spacing:2px;
  font-weight:500;
  text-align:center;
  font-variant-numeric:tabular-nums;
}
.name-input{
  font-size:19px;
  font-weight:600;
  text-align:center;
  color:var(--green);
}
.name-input::placeholder{color:#9A917C;font-weight:400;font-size:16px}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:10px 18px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:16px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  transition:transform .12s ease,background-color .16s ease,border-color .16s ease;
}
.btn:active{transform:scale(.985)}
.btn:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.btn-secondary{background:var(--mint);color:var(--green);border-color:var(--mint-deep)}
.btn-secondary:hover{background:var(--mint-deep)}
.btn-ghost{background:#FFFDF7;color:var(--ink);border-color:var(--sand)}
.btn-ghost:hover{background:#fff}
.btn-danger{background:#FFFDF7;color:var(--brick);border-color:rgba(168,50,31,.4)}
.btn-danger:hover{background:var(--brick-soft)}
.btn-block{width:100%}
.btn[disabled]{opacity:.52;cursor:not-allowed;transform:none}
.btn svg{width:20px;height:20px;flex:0 0 auto}

.link-btn{
  align-self:center;
  background:none;
  border:none;
  padding:6px 8px;
  min-height:36px;
  font-size:14.5px;
  font-weight:500;
  color:var(--green);
  text-decoration:underline;
  text-underline-offset:4px;
  cursor:pointer;
}
.link-btn:focus-visible{outline:3px solid var(--green);outline-offset:2px;border-radius:8px}

.privacy{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-soft);
  background:var(--mint);
  border:1px solid var(--mint-deep);
  border-radius:12px;
  padding:10px 12px;
}
.privacy-icon{flex:0 0 auto;width:18px;height:18px;margin-top:3px;color:var(--green)}
.privacy-icon svg{width:100%;height:100%}

/* ---------------- welcome + stages ---------------- */
.welcome-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 16px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.welcome-eyebrow{font-size:13px;color:var(--ink-soft);line-height:1.5}
.welcome-name{font-size:19px;color:var(--green);line-height:1.4}
.mini-star{width:48px;height:44px;flex:0 0 auto}
.mini-star svg{width:100%;height:100%;display:block;animation:floaty 5s ease-in-out infinite}

.stage-grid{display:flex;flex-direction:column;gap:10px}
.stage-card{
  display:flex;
  align-items:center;
  gap:12px;
  text-align:start;
  width:100%;
  padding:14px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  cursor:pointer;
  transition:transform .14s ease,border-color .16s ease,background-color .16s ease;
}
.stage-card:hover{border-color:var(--green);background:#F6EFE1}
.stage-card:active{transform:scale(.99)}
.stage-card:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.stage-icon{
  flex:0 0 auto;
  width:44px;height:44px;
  border-radius:12px;
  background:var(--mint);
  color:var(--green);
  display:flex;align-items:center;justify-content:center;
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:16px;
  font-weight:700;
}
.stage-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.stage-name{font-family:"Noto Kufi Arabic",sans-serif;font-size:16px;font-weight:700;color:var(--ink);line-height:1.5}
.stage-desc{font-size:13.5px;color:var(--ink-soft);line-height:1.5}
.stage-meta{
  flex:0 0 auto;
  font-size:12.5px;
  font-weight:600;
  color:var(--green);
  background:var(--mint);
  border-radius:999px;
  padding:3px 10px;
  white-space:nowrap;
}

.note-card{
  margin-top:18px;
  padding:14px 16px;
  border:1px dashed var(--sand);
  border-radius:var(--radius);
  background:rgba(243,234,218,.55);
}
.note-card strong{font-size:14.5px;color:var(--green)}
.note-card p{font-size:13.5px;color:var(--ink-soft);margin-top:2px}

/* ---------------- back ---------------- */
.back-btn{
  display:inline-flex;
  align-items:center;
  gap:4px;
  min-height:44px;
  padding:6px 10px 6px 6px;
  margin-top:6px;
  background:none;
  border:none;
  border-radius:10px;
  font-size:14.5px;
  font-weight:600;
  color:var(--green);
  cursor:pointer;
}
.back-btn svg{width:20px;height:20px}
.back-btn:hover{background:var(--mint)}
.back-btn:focus-visible{outline:3px solid var(--green);outline-offset:2px}

/* ---------------- subjects ---------------- */
.subject-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
}
.subject-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  text-align:start;
  padding:14px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  cursor:pointer;
  transition:transform .14s ease,border-color .16s ease;
}
.subject-card:hover{border-color:var(--green)}
.subject-card:active{transform:scale(.985)}
.subject-card:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.subject-icon{width:28px;height:28px;color:var(--green)}
.subject-icon svg{width:100%;height:100%}
.subject-name{font-family:"Noto Kufi Arabic",sans-serif;font-size:15px;font-weight:700;line-height:1.5}
.subject-count{font-size:12.5px;color:var(--ink-soft)}

/* ---------------- lesson cards ---------------- */
.lesson-card{
  display:block;
  width:100%;
  text-align:start;
  padding:14px 16px;
  margin-bottom:10px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  cursor:pointer;
  transition:transform .14s ease,border-color .16s ease;
}
.lesson-card:hover{border-color:var(--green)}
.lesson-card:active{transform:scale(.99)}
.lesson-card:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.lesson-card-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:6px}
.lesson-card-title{font-family:"Noto Kufi Arabic",sans-serif;font-size:16px;font-weight:700;line-height:1.6;color:var(--ink)}
.lesson-card-excerpt{
  font-size:14.5px;
  color:var(--ink-soft);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.lesson-card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  margin-top:10px;
  padding-top:9px;
  border-top:1px solid var(--line);
}
.stars-inline{display:inline-flex;align-items:center;gap:5px;font-size:14px;font-weight:600;color:var(--ink)}
.stars-inline svg{width:17px;height:17px;color:var(--gold)}
.read-more{font-size:13.5px;font-weight:600;color:var(--green);display:inline-flex;align-items:center;gap:3px}
.read-more svg{width:16px;height:16px}

.chip{
  display:inline-flex;
  align-items:center;
  gap:4px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
  padding:2px 9px;
  border-radius:999px;
  border:1px solid transparent;
  white-space:nowrap;
}
.chip-core{background:var(--mint);color:var(--green);border-color:var(--mint-deep)}
.chip-teacher{background:var(--green);color:#fff;border-color:var(--green)}
.chip-plain{background:#FFFDF7;color:var(--ink-soft);border-color:var(--sand)}

.empty-state{
  padding:26px 18px;
  text-align:center;
  border:1px dashed var(--sand);
  border-radius:var(--radius);
  background:rgba(243,234,218,.5);
}
.empty-state strong{display:block;font-family:"Noto Kufi Arabic",sans-serif;font-size:15.5px;color:var(--green)}
.empty-state p{font-size:14px;color:var(--ink-soft);margin-top:4px}

/* ---------------- lesson detail ---------------- */
.lesson-article{padding:16px 18px 18px}
.lesson-head{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.lesson-title{font-size:20px;line-height:1.6;color:var(--green);margin-bottom:10px}
.lesson-body{font-size:16.5px;line-height:1.9}
.lesson-body p{margin-bottom:10px}
.lesson-body p:last-child{margin-bottom:0}
.ruled{
  background-image:repeating-linear-gradient(to bottom,transparent 0 29px,rgba(30,42,36,.055) 29px 30px);
  background-position:0 4px;
}

.example-box{
  margin-top:14px;
  padding:12px 14px;
  background:#FFFDF7;
  border:1px solid var(--sand);
  border-inline-start:4px solid var(--green);
  border-radius:10px;
}
.example-label{
  display:inline-block;
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:12.5px;
  font-weight:700;
  color:var(--green);
  margin-bottom:2px;
}
.example-box p{font-size:15.5px;line-height:1.8}

.summary-line{
  margin-top:12px;
  padding-top:12px;
  border-top:1px dashed var(--sand);
}
.summary-line span{
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:12.5px;
  font-weight:700;
  color:var(--ink-soft);
  display:block;
}
.summary-line p{font-size:15.5px;font-weight:500;line-height:1.8}

.lesson-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  flex-wrap:wrap;
}
.star-hint{font-size:13px;color:var(--ink-soft)}

.star-btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:46px;
  padding:6px 16px;
  border-radius:999px;
  border:1px solid var(--sand);
  background:#FFFDF7;
  color:var(--star-off);
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.star-btn svg{width:24px;height:24px;flex:0 0 auto}
.star-btn .star-fill{fill:currentColor;stroke:currentColor;stroke-width:1;stroke-linejoin:round;transition:fill .18s ease}
.star-btn .count{color:var(--ink);font-variant-numeric:tabular-nums}
.star-btn:hover{border-color:var(--gold)}
.star-btn.is-starred{color:var(--gold);border-color:var(--gold);background:#FFF8E4}
.star-btn.is-starred .count{color:#8A6A12}
.star-btn:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.star-btn.is-popping svg{animation:pop .45s ease-out}
@keyframes pop{
  0%{transform:scale(1) rotate(0)}
  35%{transform:scale(1.3) rotate(-7deg)}
  70%{transform:scale(.92) rotate(2deg)}
  100%{transform:scale(1) rotate(0)}
}
.spark{
  position:absolute;
  top:50%;left:50%;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--gold);
  pointer-events:none;
  animation:sparkOut .62s ease-out forwards;
}
@keyframes sparkOut{
  from{transform:translate(-50%,-50%) scale(1);opacity:1}
  to{transform:translate(calc(-50% + var(--tx)),calc(-50% + var(--ty))) scale(.2);opacity:0}
}

.owner-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.owner-actions .btn{flex:1 1 130px;min-height:44px;font-size:15px}

/* ---------------- AI card ---------------- */
.ai-card{margin-top:14px;padding:16px 18px}
.ai-card-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.ai-title{display:inline-flex;align-items:center;gap:6px;font-family:"Noto Kufi Arabic",sans-serif;font-size:15.5px;font-weight:700;color:var(--green)}
.ai-title svg{width:20px;height:20px;color:var(--gold)}
.ai-sub{font-size:12.5px;color:var(--ink-soft)}
.ai-btn{width:100%;margin-top:4px}
.ai-text{
  font-size:15.5px;
  line-height:1.9;
  background:#FFFDF7;
  border:1px solid var(--sand);
  border-radius:12px;
  padding:12px 14px;
  margin-bottom:12px;
}
.ai-text p{margin-bottom:8px}
.ai-text p:last-child{margin-bottom:0}
.ai-status{font-size:13.5px;line-height:1.7;color:var(--ink-soft);margin-top:8px}
.ai-status.is-error{color:var(--brick);font-weight:500}
.cost-chip{
  background:rgba(255,255,255,.75);
  color:var(--green);
  border:1px solid var(--mint-deep);
  border-radius:999px;
  padding:1px 9px;
  font-size:12.5px;
  font-weight:700;
  white-space:nowrap;
}
.ai-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:8px}
.ai-row .ai-btn{flex:1 1 190px;width:auto;margin-top:0}
.ai-progress{
  margin-top:10px;height:6px;border-radius:999px;background:var(--mint);overflow:hidden;
}
.ai-progress span{
  display:block;height:100%;width:40%;border-radius:999px;background:var(--green);
  animation:slide 1.1s ease-in-out infinite;
}
@keyframes slide{
  0%{transform:translateX(-110%)}
  100%{transform:translateX(360%)}
}
.ai-signin{margin-top:8px;width:100%}

/* ---------------- teacher form ---------------- */
.form-card{padding:18px;display:flex;flex-direction:column;gap:15px}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip-btn{
  min-height:40px;
  padding:6px 13px;
  border-radius:999px;
  border:1px solid var(--sand);
  background:#FFFDF7;
  color:var(--ink);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.chip-btn:hover{border-color:var(--green)}
.chip-btn[aria-pressed="true"]{background:var(--green);color:#fff;border-color:var(--green)}
.chip-btn:focus-visible{outline:3px solid var(--green);outline-offset:2px}

.preview-wrap{pointer-events:none}
.preview-label{font-size:12.5px;color:var(--ink-soft);margin-bottom:6px}

/* ---------------- profile ---------------- */
.profile-head{display:flex;align-items:center;gap:14px;padding:16px;background:var(--card);border:1px solid var(--sand);border-radius:var(--radius);box-shadow:var(--shadow)}
.avatar-lg{
  flex:0 0 auto;
  width:60px;height:60px;
  border-radius:50%;
  background:var(--green);
  color:#fff;
  border:2px solid #fff;
  display:flex;align-items:center;justify-content:center;
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:26px;
  font-weight:700;
  box-shadow:var(--shadow);
}
.profile-id{min-width:0}
.profile-id h2{font-size:19px;line-height:1.5;color:var(--green)}
.profile-id p{font-size:14px;color:var(--ink-soft);line-height:1.6}
.masked-id{font-variant-numeric:tabular-nums;letter-spacing:1px;font-size:13px !important}

.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}
.stat{
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:12px;
  padding:10px 8px;
  text-align:center;
  box-shadow:var(--shadow);
}
.stat-num{display:block;font-family:"Noto Kufi Arabic",sans-serif;font-size:20px;font-weight:700;color:var(--green);line-height:1.4}
.stat-label{display:block;font-size:11.5px;color:var(--ink-soft);line-height:1.5}

.followers-card{margin-top:12px;padding:14px 16px}
.followers-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.followers-head span:first-child{font-family:"Noto Kufi Arabic",sans-serif;font-size:15px;font-weight:700}
.followers-state{font-size:12.5px;font-weight:600;color:var(--brick);background:var(--brick-soft);border-radius:999px;padding:2px 10px}
.followers-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.7;margin-top:6px}

.mine-row{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 14px;
  margin-bottom:8px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:12px;
  box-shadow:var(--shadow);
}
.mine-body{flex:1 1 auto;min-width:0}
.mine-title{font-family:"Noto Kufi Arabic",sans-serif;font-size:14.5px;font-weight:700;line-height:1.6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mine-meta{font-size:12.5px;color:var(--ink-soft)}
.mine-actions{display:flex;gap:4px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  background:#FFFDF7;
  border:1px solid var(--sand);
  border-radius:10px;
  color:var(--ink);
  cursor:pointer;
  transition:background-color .16s ease,border-color .16s ease;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{background:#fff;border-color:var(--green)}
.icon-btn.danger{color:var(--brick)}
.icon-btn.danger:hover{border-color:var(--brick);background:var(--brick-soft)}
.icon-btn:focus-visible{outline:3px solid var(--green);outline-offset:2px}

.foot-note{font-size:12.5px;color:var(--ink-soft);text-align:center;margin-top:14px;line-height:1.7}

/* ---------------- tabbar ---------------- */
.tabbar{
  position:fixed;
  inset-inline:0;
  bottom:0;
  z-index:20;
  background:var(--paper);
  border-top:1px solid var(--sand);
}
.tabbar-inner{
  max-width:640px;
  margin-inline:auto;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:2px;
  padding:6px 6px 8px;
}
.tab{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  min-height:52px;
  padding:4px;
  background:none;
  border:none;
  border-radius:12px;
  color:var(--ink-soft);
  font-size:12px;
  font-weight:600;
  cursor:pointer;
  transition:color .16s ease,background-color .16s ease;
}
.tab svg{width:22px;height:22px}
.tab:hover{background:var(--mint);color:var(--green)}
.tab.is-active{color:var(--green);background:var(--mint)}
.tab:focus-visible{outline:3px solid var(--green);outline-offset:-2px}

/* ---------------- toast ---------------- */
.toast{
  position:fixed;
  inset-inline:0;
  bottom:88px;
  z-index:40;
  margin-inline:auto;
  width:fit-content;
  max-width:calc(100% - 32px);
  padding:10px 18px;
  border-radius:999px;
  background:var(--ink);
  color:#FFFDF7;
  font-size:14px;
  font-weight:500;
  line-height:1.6;
  box-shadow:0 6px 20px rgba(0,0,0,.18);
  opacity:0;
  transform:translateY(10px);
  pointer-events:none;
  transition:opacity .2s ease,transform .2s ease;
}
.toast.is-visible{opacity:1;transform:none}

/* ---------------- responsive ---------------- */
@media (min-width:520px){
  .subject-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hero-title{font-size:26px}
  .section-title{font-size:21px}
}
@media (min-width:720px){
  body{font-size:17.5px}
  .app{padding-bottom:120px}
}
@media (max-width:360px){
  .stage-meta{display:none}
  .brand-sub{font-size:11.5px}
}

/* ---------------- المكتبة العلمية ---------------- */
.library-cta{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  text-align:start;
  margin-top:12px;
  padding:14px 16px;
  border-radius:var(--radius);
  background:var(--green);
  color:#fff;
  border:1px solid var(--green-dark);
  cursor:pointer;
  box-shadow:0 6px 16px rgba(0,83,42,.16);
  transition:transform .14s ease,background-color .16s ease;
}
.library-cta:hover{background:var(--green-dark)}
.library-cta:active{transform:scale(.99)}
.library-cta:focus-visible{outline:3px solid var(--green);outline-offset:3px}
.library-cta-icon{flex:0 0 auto;width:40px;height:37px}
.library-cta-icon svg{width:100%;height:100%;display:block}
.library-cta-icon .logo-map{fill:#fff;stroke:#CFE8DA}
.library-cta-icon .logo-page{fill:var(--green)}
.library-cta-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.library-cta-title{font-family:"Noto Kufi Arabic",sans-serif;font-size:15.5px;font-weight:700;line-height:1.5;color:#fff}
.library-cta-desc{font-size:12.5px;line-height:1.6;color:#DCEEE4}
.library-cta-arrow{flex:0 0 auto;width:20px;height:20px;color:#DCEEE4}
.library-cta-arrow svg{width:100%;height:100%}

.segmented{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:4px;
  padding:4px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:999px;
  margin-bottom:14px;
}
.seg-btn{
  min-height:44px;
  padding:6px 8px;
  border:none;
  border-radius:999px;
  background:transparent;
  color:var(--ink-soft);
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease;
}
.seg-btn:hover{color:var(--green)}
.seg-btn[aria-selected="true"]{background:var(--green);color:#fff}
.seg-btn:focus-visible{outline:3px solid var(--green);outline-offset:2px}

.lib-card{
  display:flex;
  align-items:center;
  gap:11px;
  width:100%;
  text-align:start;
  padding:13px 14px;
  margin-bottom:10px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  cursor:pointer;
  transition:transform .14s ease,border-color .16s ease;
}
.lib-card:hover{border-color:var(--green)}
.lib-card:active{transform:scale(.99)}
.lib-card:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.lib-icon{
  flex:0 0 auto;
  width:44px;height:44px;
  border-radius:12px;
  background:var(--mint);
  border:1px solid var(--mint-deep);
  color:var(--green);
  display:flex;align-items:center;justify-content:center;
}
.lib-icon svg{width:24px;height:24px}
.lib-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:1px}
.lib-name{font-family:"Noto Kufi Arabic",sans-serif;font-size:15px;font-weight:700;line-height:1.5;color:var(--ink)}
.lib-desc{font-size:12.5px;color:var(--ink-soft);line-height:1.6}
.lib-count{
  flex:0 0 auto;
  min-width:26px;
  text-align:center;
  font-size:12.5px;
  font-weight:700;
  color:var(--green);
  background:var(--mint);
  border-radius:999px;
  padding:2px 8px;
  font-variant-numeric:tabular-nums;
}
.lib-arrow{flex:0 0 auto;width:18px;height:18px;color:var(--green)}
.lib-arrow svg{width:100%;height:100%}

.lib-stage-title{
  display:flex;
  align-items:center;
  gap:8px;
  margin:18px 0 8px;
  font-size:15px;
}
.lib-stage-count{font-size:12.5px;font-weight:500;color:var(--ink-soft)}

.thinker-card{
  padding:15px 16px;
  margin-bottom:10px;
  background:var(--card);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.thinker-head{display:flex;align-items:center;gap:11px}
.thinker-avatar{
  flex:0 0 auto;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--green);
  color:#fff;
  border:2px solid #fff;
  display:flex;align-items:center;justify-content:center;
  font-family:"Noto Kufi Arabic",sans-serif;
  font-size:18px;
  font-weight:700;
  box-shadow:var(--shadow);
}
.thinker-id{min-width:0}
.thinker-name{display:block;font-family:"Noto Kufi Arabic",sans-serif;font-size:15px;font-weight:700;line-height:1.5;color:var(--green)}
.thinker-meta{display:block;font-size:12.5px;color:var(--ink-soft);line-height:1.6}
.thinker-bio{font-size:14.5px;line-height:1.85;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.thinker-btn{width:100%;margin-top:12px;min-height:44px;font-size:14px}

@media (max-width:360px){
  .lib-desc{-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}