:root{
  --green-900:#0b3d2e;
  --green-800:#0f5132;
  --green-700:#146c43;
  --green-600:#1a8754;
  --gold:#c9a227;
  --gold-light:#e8c766;
  --cream:#faf6ec;
  --cream-dark:#f0e9d8;
  --ink:#1f2620;
  --muted:#6b7368;
  --danger:#b3261e;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 4px 18px rgba(15,81,50,.10);
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;max-width:100%;overflow-x:hidden;}
body{
  font-family:"Cairo","Tahoma","Segoe UI",system-ui,sans-serif;
  background:var(--cream);
  color:var(--ink);
  min-height:100vh;
}
.hidden{display:none !important;}

@keyframes fadeSlideIn{
  from{opacity:0;transform:translateY(10px);}
  to{opacity:1;transform:translateY(0);}
}

/* ---------- Landing page ---------- */
.landing-wrap{
  min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 20% 10%, var(--green-700), var(--green-900) 55%, #08251c 100%);
  padding:32px 20px;
  animation:fadeSlideIn .4s ease;
}
.landing-inner{max-width:820px;width:100%;text-align:center;}
.landing-logo{margin-bottom:34px;}
.app-logo-badge{
  width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #1a8754, #0b3d2e 75%);
  border:3px solid var(--gold);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 14px;
  box-shadow:0 10px 26px rgba(0,0,0,.28);
  overflow:hidden;
}
.app-logo-badge svg{width:78%;height:78%;}
.app-logo-badge-sm{
  width:30px;height:30px;border-width:1.5px;margin:0;box-shadow:none;flex-shrink:0;
}
.landing-logo svg{filter:drop-shadow(0 4px 10px rgba(0,0,0,.3));}
.landing-logo h1{color:#fff;font-size:26px;margin:14px 0 6px;}
.landing-logo p{color:rgba(255,255,255,.75);font-size:14px;margin:0;}

.role-cards{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;}
.role-card{
  background:var(--white);
  border-radius:20px;
  padding:30px 26px;
  width:280px;
  box-shadow:0 20px 45px rgba(0,0,0,.22);
  transition:transform .2s ease, box-shadow .2s ease;
}
.role-card:hover{transform:translateY(-4px);box-shadow:0 26px 55px rgba(0,0,0,.28);}
.role-icon{
  width:64px;height:64px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 14px;
}
.teacher-icon{background:#e9f3ee;color:var(--green-700);}
.student-icon{background:#fbf2dc;color:#a5811a;}
.role-card h2{margin:0 0 6px;color:var(--green-900);font-size:18px;}
.role-card p{color:var(--muted);font-size:13px;margin:0 0 20px;min-height:36px;}
.role-actions{display:flex;flex-direction:column;gap:10px;}

.landing-footer{margin-top:30px;}
.landing-footer a{color:rgba(255,255,255,.8);font-size:13px;text-decoration:none;border-bottom:1px dashed rgba(255,255,255,.4);}
.landing-footer a:hover{color:#fff;}

/* ---------- Auth screens ---------- */
.auth-wrap{
  min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg, var(--green-900), var(--green-700) 60%, var(--gold) 140%);
  padding:20px;
  animation:fadeSlideIn .3s ease;
}
.auth-card{
  position:relative;
  background:var(--white);
  border-radius:20px;
  padding:32px 28px;
  width:100%;
  max-width:400px;
  box-shadow:0 20px 50px rgba(0,0,0,.25);
  text-align:center;
}
.back-btn{
  position:absolute;top:16px;left:16px;
  background:var(--cream);border:none;border-radius:50%;
  width:34px;height:34px;font-size:16px;color:var(--green-800);
  cursor:pointer;transition:.15s;
}
.back-btn:hover{background:var(--cream-dark);}
.auth-logo{font-size:40px;margin-bottom:6px;}
.auth-card h1{font-size:20px;margin:4px 0 2px;color:var(--green-900);}
.auth-sub{color:var(--muted);font-size:13px;margin:0 0 20px;}
.auth-card form{text-align:right;display:flex;flex-direction:column;gap:6px;}
.auth-card label{font-size:13px;color:var(--green-900);font-weight:600;margin-top:6px;}
.auth-card input{
  padding:11px 12px;border:1.5px solid var(--cream-dark);border-radius:10px;
  font-size:14px;background:var(--cream);outline:none;transition:.15s;
  width:100%;
}
.auth-card input:focus{border-color:var(--green-600);background:var(--white);}
.auth-error{color:var(--danger);font-size:13px;min-height:18px;margin:10px 0 0;}
.auth-success{color:var(--green-700);font-size:13px;margin:6px 0 0;}
.auth-footer{margin-top:14px;font-size:13px;}
.auth-footer a{color:var(--green-700);text-decoration:none;}
.auth-footer a:hover{text-decoration:underline;}
.field-hint{font-size:11.5px;color:var(--danger);margin:2px 0 0;min-height:14px;text-align:right;}
.warn-note{font-size:11.5px;color:#8a6d1c;background:#fff3d9;border-radius:8px;padding:8px 10px;margin:8px 0;text-align:right;}

.simple-id-result{text-align:center;padding:6px 0;}
.simple-id-value{
  font-size:28px;font-weight:800;letter-spacing:3px;color:var(--green-800);
  background:var(--cream);border:2px dashed var(--gold);border-radius:12px;
  padding:14px;margin:10px 0 14px;direction:ltr;
}

.password-wrap{position:relative;}
.password-wrap input{padding-left:40px;}
.eye-toggle{
  position:absolute;left:6px;top:50%;transform:translateY(-50%);
  background:transparent;border:none;font-size:16px;cursor:pointer;
  padding:6px;line-height:1;opacity:.65;
}
.eye-toggle:hover{opacity:1;}

/* ---------- Buttons ---------- */
.btn{
  border:none;border-radius:10px;padding:10px 16px;font-size:14px;font-weight:700;
  cursor:pointer;transition:.15s;font-family:inherit;
}
.btn-primary{background:var(--green-700);color:var(--white);}
.btn-primary:hover{background:var(--green-800);transform:translateY(-1px);}
.btn-block{width:100%;margin-top:14px;padding:12px;}
.btn-outline{background:transparent;color:var(--green-700);border:1.5px solid var(--green-700);}
.btn-outline:hover{background:var(--green-700);color:#fff;}
.btn-gold{background:var(--gold);color:var(--green-900);}
.btn-gold:hover{background:var(--gold-light);}
.btn-ghost{background:transparent;color:var(--white);border:1px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.15);}
.btn-danger{background:#fbeaea;color:var(--danger);}
.btn-danger:hover{background:#f6d5d3;}
.btn-sm{padding:6px 10px;font-size:12px;border-radius:8px;}

/* ---------- App shell ---------- */
.topbar{
  background:var(--green-900);
  color:var(--white);
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 20px;
  position:sticky;top:0;z-index:10;
  box-shadow:0 2px 10px rgba(0,0,0,.15);
}
.brand{font-weight:800;font-size:16px;display:flex;align-items:center;gap:6px;}
.user-box{display:flex;align-items:center;gap:10px;font-size:13px;}
.role-badge{
  background:var(--gold);color:var(--green-900);padding:3px 10px;border-radius:999px;
  font-size:11px;font-weight:800;
}

.layout{display:flex;min-height:calc(100vh - 54px);max-width:100%;}
.sidebar{
  width:190px;flex-shrink:0;
  background:var(--green-800);
  padding:16px 10px;
  display:flex;flex-direction:column;gap:4px;
}
.sidebar button{
  background:transparent;border:none;color:var(--cream);
  text-align:right;padding:11px 14px;border-radius:10px;font-size:14px;
  cursor:pointer;font-family:inherit;
}
.sidebar button:hover{background:rgba(255,255,255,.08);}
.sidebar button.active{background:var(--gold);color:var(--green-900);font-weight:800;}

.content{flex:1;min-width:0;padding:22px;max-width:1100px;animation:fadeSlideIn .25s ease;}

@media (max-width:760px){
  .layout{flex-direction:column;}
  .sidebar{width:100%;flex-direction:row;overflow-x:auto;padding:8px;}
  .sidebar button{white-space:nowrap;}
  .content{padding:14px;}
  .topbar{padding:10px 12px;}
  .brand{font-size:14px;}
}

/* ---------- Common content elements ---------- */
h2.page-title{color:var(--green-900);margin:0 0 16px;font-size:19px;}

.cards-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:20px;}
.stat-card{
  background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:16px 20px;min-width:140px;flex:1;
  border-inline-start:5px solid var(--gold);
}
.stat-card .num{font-size:26px;font-weight:800;color:var(--green-800);}
.stat-card .label{font-size:12.5px;color:var(--muted);margin-top:2px;}

.panel{
  background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:18px 20px;margin-bottom:18px;
  max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.panel h3{margin:0 0 14px;color:var(--green-900);font-size:15px;}

table{width:100%;min-width:480px;border-collapse:collapse;font-size:13.5px;}
thead th{
  background:var(--cream-dark);color:var(--green-900);
  padding:10px;text-align:right;font-size:12.5px;font-weight:800;
}
tbody td{padding:9px 10px;border-bottom:1px solid var(--cream-dark);}
tbody tr:hover{background:#fbfaf4;}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;min-width:0;}
.form-grid > div{min-width:0;}
@media (max-width:600px){.form-grid{grid-template-columns:1fr;}}
.form-grid label{font-size:12.5px;font-weight:700;color:var(--green-900);display:block;margin-bottom:4px;}
.form-grid input, .form-grid select{
  width:100%;padding:9px 10px;border:1.5px solid var(--cream-dark);border-radius:8px;
  font-size:13.5px;font-family:inherit;background:var(--cream);
}
.form-actions{margin-top:14px;display:flex;gap:10px;}

.pill{padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:800;}
.pill-present{background:#e2f4e9;color:var(--green-700);}
.pill-absent{background:#fbe6e5;color:var(--danger);}
.pill-late{background:#fff3d9;color:#8a6d1c;}
.pill-excused{background:#e6edfb;color:#2a4d9b;}
.pill-pending{background:#fff3d9;color:#8a6d1c;}
.pill-accepted{background:#e2f4e9;color:var(--green-700);}

.teacher-pick-card{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border:1.5px solid var(--cream-dark);border-radius:12px;margin-bottom:10px;
  transition:.15s;
}
.teacher-pick-card:hover{border-color:var(--green-600);background:#fbfaf4;}
.teacher-pick-name{font-weight:700;color:var(--green-900);}

/* ---------- Avatar ---------- */
.avatar{
  width:36px;height:36px;border-radius:50%;object-fit:cover;
  background:var(--cream-dark);flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--green-800);font-size:14px;
}
.avatar-lg{width:96px;height:96px;font-size:32px;}
.avatar-sm{width:26px;height:26px;font-size:11px;}
.name-with-avatar{display:flex;align-items:center;gap:8px;}

/* ---------- Messages ---------- */
.messages-layout{display:flex;gap:16px;height:calc(100vh - 160px);min-height:420px;}
.conv-list{width:280px;flex-shrink:0;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow-y:auto;padding:8px;}
.back-to-conv-list{display:none;}
@media (max-width:760px){
  .messages-layout{flex-direction:column;height:auto;gap:10px;}
  .conv-list{width:100%;max-height:65vh;}
  .thread-panel{min-height:70vh;}
  .messages-layout.mobile-thread-open .conv-list{display:none;}
  .messages-layout:not(.mobile-thread-open) .thread-panel{display:none;}
  .back-to-conv-list{display:inline-flex;}
}
.conv-search{padding:8px;}
.conv-item{
  display:flex;align-items:center;gap:10px;padding:10px;border-radius:10px;cursor:pointer;transition:.15s;
}
.conv-item:hover, .conv-item.active{background:var(--cream);}
.conv-item .conv-name{font-weight:700;font-size:13.5px;color:var(--green-900);}
.conv-item .conv-preview{font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:170px;}
.conv-unread{background:var(--danger);color:#fff;border-radius:999px;font-size:10px;padding:1px 7px;font-weight:800;margin-right:auto;}

.thread-panel{flex:1;min-width:0;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;}
.thread-header{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--cream-dark);}
.thread-header .name{font-weight:800;color:var(--green-900);}
.thread-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px;background:var(--cream);}
.msg-bubble{max-width:70%;padding:9px 13px;border-radius:14px;font-size:13.5px;line-height:1.5;}
.msg-mine{align-self:flex-start;background:var(--green-700);color:#fff;border-bottom-right-radius:4px;}
.msg-theirs{align-self:flex-end;background:var(--white);color:var(--ink);border:1px solid var(--cream-dark);border-bottom-left-radius:4px;}
.msg-time{font-size:9.5px;opacity:.7;margin-top:3px;display:block;}
.thread-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--cream-dark);}
.thread-input input{flex:1;padding:10px 12px;border:1.5px solid var(--cream-dark);border-radius:10px;font-size:13.5px;background:var(--cream);}

/* ---------- File picker (Arabic labels instead of native "Choose file") ---------- */
.file-picker{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.file-picker-label{font-size:12px;color:var(--muted);}
.msg-icon-btn{
  background:transparent;border:none;cursor:pointer;font-size:15px;
  padding:4px 6px;border-radius:8px;color:var(--green-700);flex-shrink:0;
}
.msg-icon-btn:hover{background:var(--cream-dark);}
.nav-badge{
  background:var(--danger);color:#fff;border-radius:999px;
  font-size:10px;font-weight:800;padding:1px 7px;margin-right:6px;
}

/* ---------- Clickable person chip (avatar + name -> opens messaging) ---------- */
.person-chip{cursor:pointer;padding:3px 6px 3px 3px;border-radius:999px;transition:.15s;}
.person-chip:hover{background:var(--cream-dark);}
.person-chip:hover .msg-indicator{opacity:1;transform:scale(1.08);}
.msg-indicator{
  width:20px;height:20px;border-radius:50%;
  background:var(--green-700);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;opacity:.85;transition:.15s;
}

/* ---------- Avatar zoom (lightbox) ---------- */
.avatar-zoomable{cursor:zoom-in;}
.avatar-lightbox{
  position:fixed;inset:0;background:rgba(8,20,15,.88);
  display:flex;align-items:center;justify-content:center;
  z-index:999;
}
.avatar-lightbox img{
  max-width:min(80vw,420px);max-height:80vh;border-radius:16px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
}
.avatar-lightbox-close{
  position:absolute;top:22px;left:22px;
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.3);
  width:42px;height:42px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;
}
.avatar-lightbox-close:hover{background:rgba(255,255,255,.22);}

.att-row{display:flex;align-items:center;justify-content:space-between;padding:9px 4px;border-bottom:1px solid var(--cream-dark);}
.att-row:last-child{border-bottom:none;}
.att-name{font-weight:600;font-size:13.5px;}
.status-toggle{display:flex;gap:5px;}
.status-toggle button{
  border:1.5px solid var(--cream-dark);background:var(--white);
  padding:5px 10px;border-radius:8px;font-size:12px;cursor:pointer;font-family:inherit;
}
.status-toggle button.sel-present{background:var(--green-700);color:#fff;border-color:var(--green-700);}
.status-toggle button.sel-absent{background:var(--danger);color:#fff;border-color:var(--danger);}
.status-toggle button.sel-late{background:#c98a17;color:#fff;border-color:#c98a17;}
.status-toggle button.sel-excused{background:#3a5bb0;color:#fff;border-color:#3a5bb0;}

.empty-hint{color:var(--muted);font-size:13px;padding:14px 0;text-align:center;}

.toast{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  background:var(--green-900);color:#fff;padding:11px 20px;border-radius:10px;
  font-size:13.5px;box-shadow:0 8px 24px rgba(0,0,0,.25);
  opacity:0;pointer-events:none;transition:.25s;z-index:999;
}
.toast.show{opacity:1;top:24px;}
.toast.error{background:var(--danger);}