*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Nunito',sans-serif;background:#eef0f5;min-height:100vh;}

/* ── PROFILE CARD ── */
.profile-card{
  background:linear-gradient(135deg,#1e293b 0%,#0f172a 60%,#1e3a5f 100%);
  border-radius:24px;padding:32px 40px;
  display:flex;flex-direction:column;align-items:center;
  position:relative;overflow:hidden;
  box-shadow:0 8px 40px rgba(0,0,0,.28);
}
.profile-card::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 20% 50%,rgba(59,130,246,.12) 0%,transparent 60%),
             radial-gradient(ellipse at 80% 20%,rgba(99,102,241,.08) 0%,transparent 50%);
  pointer-events:none;
}
.profile-deco-circle{position:absolute;border-radius:50%;background:rgba(255,255,255,.04);pointer-events:none;}

.profile-top-row{display:flex;align-items:center;gap:28px;width:100%;position:relative;z-index:1;margin-bottom:20px;}

.profile-photo-wrap{position:relative;flex-shrink:0;cursor:pointer;}
.profile-photo{
  width:96px;height:96px;border-radius:50%;
  border:4px solid rgba(255,255,255,.3);
  object-fit:cover;background:#1e3a5f;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
  box-shadow:0 0 0 3px rgba(255,255,255,.08),0 8px 24px rgba(0,0,0,.4);
}
.profile-photo img{width:100%;height:100%;object-fit:cover;}
.profile-photo .placeholder{font-size:40px;}
.photo-edit-btn{
  position:absolute;bottom:2px;right:2px;width:28px;height:28px;
  background:#3b82f6;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:13px;
  box-shadow:0 2px 8px rgba(0,0,0,.3);cursor:pointer;
  border:2px solid rgba(255,255,255,.4);transition:transform .2s,background .2s;
}
.photo-edit-btn:hover{transform:scale(1.15);background:#2563eb;}

.profile-headline{flex:1;}
.profile-school-tag{
  font-size:11px;font-weight:900;color:rgba(255,255,255,.5);
  text-transform:uppercase;letter-spacing:.14em;margin-bottom:6px;
}
.profile-main-title{
  font-family:'Fredoka One',cursive;
  font-size:clamp(22px,4vw,38px);
  color:#fff;line-height:1.05;
  text-shadow:0 2px 16px rgba(0,0,0,.3);
  letter-spacing:.5px;
}
.profile-name-input{
  font-family:'Fredoka One',cursive;
  font-size:clamp(18px,3vw,26px);
  color:#93c5fd;
  background:transparent;border:none;
  border-bottom:2.5px dashed rgba(147,197,253,.4);
  outline:none;width:100%;padding:2px 4px;
  transition:border-color .2s,color .2s;
  margin-top:8px;
}
.profile-name-input:focus{border-color:#93c5fd;color:#bfdbfe;}
.profile-name-input::placeholder{color:rgba(147,197,253,.35);font-size:18px;}
.profile-name-input:disabled{cursor:default;}

.profile-bottom-row{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:12px;position:relative;z-index:1;
  border-top:1px solid rgba(255,255,255,.08);padding-top:16px;
}
.grade-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1.5px solid rgba(255,255,255,.15);
  border-radius:999px;padding:8px 18px;
}
.grade-emoji{font-size:20px;}
.grade-text{font-family:'Fredoka One',cursive;font-size:17px;color:#e2e8f0;letter-spacing:.5px;}
.grade-sub{font-size:12px;font-weight:700;color:rgba(255,255,255,.5);margin-top:1px;}

.status-chip-frozen{background:rgba(255,255,255,.12);border:1.5px solid rgba(255,255,255,.2);color:#e2e8f0;border-radius:999px;padding:6px 14px;font-size:12px;font-weight:800;display:inline-flex;align-items:center;gap:6px;}
.status-chip-edit{background:rgba(251,191,36,.18);border:1.5px solid rgba(251,191,36,.35);color:#fde68a;border-radius:999px;padding:6px 14px;font-size:12px;font-weight:800;display:inline-flex;align-items:center;gap:6px;}

/* ── SPIRAL BINDING ── */
.spiral-strip{
  background:linear-gradient(to bottom,#c8bfb0 0%,#b0a494 40%,#d0c8bc 70%,#c8bfb0 100%);
  display:flex;align-items:center;justify-content:space-around;
  padding:8px 0;position:relative;z-index:10;
  border-top:2px solid rgba(0,0,0,.08);
}
.spiral-hole{
  position:relative;width:24px;height:24px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#e8e0d4 0%,#b0a090 50%,#786050 100%);
  border:2px solid #786050;
  box-shadow:
    inset 0 2px 5px rgba(0,0,0,.4),
    inset 0 -1px 2px rgba(255,255,255,.2),
    0 1px 3px rgba(255,255,255,.5),
    0 2px 6px rgba(0,0,0,.3);
}
.spiral-hole::after{
  content:'';position:absolute;top:3px;left:3px;right:3px;bottom:3px;
  border-radius:50%;
  background:linear-gradient(135deg,rgba(255,255,255,.15) 0%,transparent 60%);
  border:1px solid rgba(255,255,255,.12);
}

/* ── SUBJECT TABS ── */
.tabs-wrap{
  display:flex;align-items:flex-end;gap:4px;
  padding:0 16px;overflow-x:auto;scrollbar-width:none;
}
.tabs-wrap::-webkit-scrollbar{display:none;}
.subject-tab{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:10px 16px 13px;border-radius:14px 14px 0 0;
  cursor:pointer;min-width:100px;
  border:2px solid transparent;border-bottom:none;
  transition:all .25s cubic-bezier(.4,0,.2,1);
  position:relative;top:2px;opacity:.7;
  font-family:'Nunito',sans-serif;font-weight:800;font-size:10px;
  text-transform:uppercase;letter-spacing:.06em;
  box-shadow:0 -3px 10px rgba(0,0,0,.07);
}
.subject-tab .tab-icon{
  font-size:22px;line-height:1;
  transition:transform .25s cubic-bezier(.34,1.56,.64,1);
  display:block;
}
.subject-tab:hover .tab-icon{transform:scale(1.22);}
.subject-tab:hover{opacity:.88;top:0;}
.subject-tab.active{
  opacity:1;top:0;
  border-bottom:3px solid #fffdf9;z-index:5;
  box-shadow:0 -6px 20px rgba(0,0,0,.14);
}

/* ── PAPER ── */
.paper{
  background:#fffdf9;
  border-radius:0 0 18px 18px;
  min-height:76vh;
  box-shadow:0 6px 40px rgba(0,0,0,.1);
  position:relative;overflow:hidden;
}
.paper::before{
  content:'';position:absolute;top:0;left:54px;bottom:0;width:2px;
  background:#f4b8b8;opacity:.55;z-index:0;
}
.paper-lines{
  background-image:repeating-linear-gradient(transparent,transparent 39px,#ede8df 39px,#ede8df 40px);
  background-size:100% 40px;
  position:absolute;inset:0;opacity:.28;pointer-events:none;z-index:0;
}
.paper-content{position:relative;z-index:1;}

/* ── WEEK CARD ── */
.week-card{
  background:#fff;border-radius:18px;
  border:1.5px solid #e8e3dc;
  box-shadow:0 2px 14px rgba(0,0,0,.06);
  display:flex;flex-direction:column;overflow:hidden;
  transition:box-shadow .25s,transform .25s cubic-bezier(.4,0,.2,1);
}
.week-card:hover{
  box-shadow:0 10px 36px rgba(0,0,0,.14);
  transform:translateY(-4px);
}

/* ── CONTENT BOXES ── */
.content-box{border-radius:12px;padding:11px 13px;}
.content-box-main{background:#f8f7f5;border:1.5px solid #ede8e0;}
.content-box-lec{background:#fffbeb;border:1.5px solid #fde68a;}

/* ── ACTIVITY ITEM ── */
.act-item{font-size:11px;color:#57534e;display:flex;align-items:flex-start;gap:6px;line-height:1.4;}
.act-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;margin-top:4px;display:inline-block;}

/* ── EVIDENCE ── */
.ev-thumb{position:relative;border-radius:9px;overflow:hidden;cursor:pointer;border:2px solid #e2ddd6;transition:transform .18s,box-shadow .18s;}
.ev-thumb:hover{transform:scale(1.06);box-shadow:0 6px 18px rgba(0,0,0,.18);}
.ev-thumb img{width:100%;height:90px;object-fit:cover;display:block;user-select:none;-webkit-user-drag:none;}
.ev-thumb video{width:100%;height:90px;object-fit:cover;display:block;pointer-events:none;}
.ev-yt{width:100%;height:90px;background:#111;display:flex;align-items:center;justify-content:center;font-size:28px;}
.ev-pdf-thumb{padding:10px 6px;display:flex;flex-direction:column;align-items:center;gap:4px;background:#f8f5f1;min-height:80px;justify-content:center;}
.ev-overlay{position:absolute;inset:0;background:rgba(0,0,0,.42);opacity:0;display:flex;align-items:center;justify-content:center;transition:opacity .18s;font-size:24px;}
.ev-thumb:hover .ev-overlay{opacity:1;}
.ev-del{position:absolute;top:4px;right:4px;z-index:5;width:22px;height:22px;border-radius:6px;background:rgba(239,68,68,.9);color:#fff;border:none;cursor:pointer;font-size:11px;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .18s;}
.ev-thumb:hover .ev-del{opacity:1;}

/* ── UPLOAD ── */
.upload-zone{border:2.5px dashed #c4b5a0;border-radius:14px;padding:24px 16px;text-align:center;cursor:pointer;background:#faf9f7;transition:all .2s;position:relative;}
.upload-zone:hover,.upload-zone.drag{border-color:#3b82f6;background:#eff6ff;}
.upload-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;z-index:2;width:100%;height:100%;}

/* ── TYPE OPTS ── */
.type-opt{padding:10px 8px;border-radius:12px;border:2.5px solid #e2ddd6;display:flex;flex-direction:column;align-items:center;gap:5px;cursor:pointer;font-size:11px;font-weight:800;color:#78716c;transition:all .18s;background:#fffdf9;text-transform:uppercase;letter-spacing:.04em;}
.type-opt.active{border-color:#3b82f6;background:#eff6ff;color:#2563eb;}

/* ── SRC TABS ── */
.src-tabs{display:flex;border-radius:10px;overflow:hidden;border:2px solid #e2ddd6;margin-bottom:14px;}
.src-tab{flex:1;padding:9px;font-family:'Nunito',sans-serif;font-weight:800;font-size:12px;border:none;cursor:pointer;background:#fffdf9;color:#78716c;transition:all .18s;}
.src-tab.active{background:#3b82f6;color:#fff;}

/* ── MODAL ── */
.overlay-bg{position:fixed;inset:0;background:rgba(10,15,30,.55);backdrop-filter:blur(5px);z-index:200;display:flex;align-items:center;justify-content:center;padding:16px;}
.modal-wrap{background:#fffdf9;border-radius:24px;width:100%;max-width:500px;max-height:90vh;overflow-y:auto;padding:28px;animation:slideUp .25s cubic-bezier(.34,1.3,.64,1);box-shadow:0 24px 70px rgba(0,0,0,.3);}
@keyframes slideUp{from{opacity:0;transform:translateY(28px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}

/* ── TOOLBAR ── */
.toolbar-glass{
  position:fixed;bottom:20px;right:20px;z-index:50;
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(16px) saturate(180%);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  border:1.5px solid rgba(255,255,255,.9);
  border-radius:20px;padding:12px 14px;
  box-shadow:0 8px 40px rgba(0,0,0,.14),0 1px 0 rgba(255,255,255,.8) inset;
  transition:background .3s,border-color .3s;
}
.toolbar-glass.frozen{
  background:rgba(15,20,35,.88);
  border-color:rgba(255,255,255,.08);
}
.tb-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 15px;border-radius:12px;
  font-family:'Nunito',sans-serif;font-weight:800;font-size:12px;
  border:none;cursor:pointer;transition:transform .15s,box-shadow .15s,filter .15s;
  box-shadow:0 2px 8px rgba(0,0,0,.1);
}
.tb-btn:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(0,0,0,.18);}
.tb-btn:active{transform:translateY(0);}
.tb-btn-neutral{background:#f1f5f9;color:#475569;}
.tb-btn-neutral:hover{background:#e2e8f0;}
.tb-btn-green{background:linear-gradient(135deg,#059669,#0d9488);color:#fff;}
.tb-btn-amber{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;}
.tb-btn-indigo{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;}

/* ── VIEWER ── */
.viewer-ov{position:fixed;inset:0;z-index:500;background:rgba(0,0,0,.93);backdrop-filter:blur(12px);display:flex;flex-direction:column;animation:fadeIn .2s ease;}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.v-img{max-width:100%;max-height:calc(100vh - 110px);object-fit:contain;border-radius:8px;display:block;user-select:none;-webkit-user-drag:none;pointer-events:none;}
.v-iframe{width:min(940px,100%);height:calc(100vh - 110px);border:none;border-radius:8px;background:#fff;}
.v-video{max-width:100%;max-height:calc(100vh - 110px);border-radius:8px;}
.v-yt{width:min(940px,100%);aspect-ratio:16/9;border:none;border-radius:8px;}

/* ── TOAST & LOADER ── */
#toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%) translateY(20px);z-index:400;padding:12px 24px;border-radius:14px;font-weight:800;font-size:14px;color:#fff;opacity:0;transition:all .35s;pointer-events:none;max-width:90vw;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.2);}
#pg-loader{position:fixed;inset:0;z-index:999;background:#eef0f5;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;}
.loader-book{font-size:64px;animation:bounce .8s ease infinite alternate;}
@keyframes bounce{from{transform:translateY(0) rotate(-5deg)}to{transform:translateY(-14px) rotate(5deg)}}

@media print{.no-print,#toolbar-el,#viewer,#ev-modal,#pw-modal,#toast,#pg-loader{display:none!important;}body{background:#fff;}.paper{box-shadow:none;border-radius:0;}.paper::before,.paper-lines{display:none;}.ev-del{display:none!important;}.week-card{break-inside:avoid;}}
::-webkit-scrollbar{width:6px;height:6px;}::-webkit-scrollbar-thumb{background:#ccc;border-radius:999px;}