@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@300;400;500;600;700;800&display=swap');

:root{
  --bg:#080b14;
  --bg2:#0d1220;
  --card:#111827;
  --card2:#151d2e;
  --border:#26334d;
  --text:#eef4ff;
  --muted:#9aa9c2;
  --primary:#7c5cff;
  --primary2:#5b8cff;
  --cyan:#19d3ff;
  --green:#21d19f;
  --yellow:#ffc857;
  --orange:#ff8a4c;
  --red:#ff5577;
  --pink:#e95cff;
  --shadow:0 14px 40px rgba(0,0,0,.35);
  --radius:18px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;min-height:100%;font-family:'Vazirmatn',Tahoma,sans-serif;background:radial-gradient(circle at 10% 0%,rgba(124,92,255,.16),transparent 30%),radial-gradient(circle at 90% 10%,rgba(25,211,255,.10),transparent 28%),var(--bg);color:var(--text)}
body{direction:rtl}
a{color:var(--cyan);text-decoration:none;transition:.2s}
a:hover{color:#fff}
button,input,select,textarea{font-family:inherit}
.container,.content,.main{max-width:1400px;margin:auto;padding:24px}

header,.navbar,.topbar,.nav{
  background:rgba(13,18,32,.88);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  box-shadow:0 8px 30px rgba(0,0,0,.2)
}
.navbar,.nav{display:flex;align-items:center;gap:10px;padding:12px 20px;flex-wrap:wrap}
.nav a,.navbar a,.nav-link{
  color:#c9d5eb!important;padding:10px 14px;border-radius:12px;font-weight:600
}
.nav a:hover,.navbar a:hover,.nav .active{
  background:linear-gradient(135deg,rgba(124,92,255,.24),rgba(25,211,255,.12));
  color:#fff!important
}

.card,.panel,.box{
  background:linear-gradient(145deg,rgba(21,29,46,.96),rgba(12,17,30,.96));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:22px;
  margin-bottom:20px;
  position:relative;
  overflow:hidden
}
.card:before,.panel:before{
  content:"";position:absolute;top:0;right:0;width:90px;height:3px;
  background:linear-gradient(90deg,var(--cyan),var(--primary),var(--pink))
}
h1,h2,h3,h4{color:#fff;margin-top:0}
h1{font-size:30px}
h2{font-size:24px}
h3{font-size:19px}
.muted,.text-muted{color:var(--muted)!important}

.grid,.cards,.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}
.stat,.stat-card{
  background:linear-gradient(145deg,#151e32,#0e1525);
  border:1px solid var(--border);border-radius:18px;padding:20px;
  box-shadow:0 10px 28px rgba(0,0,0,.25)
}
.stat:nth-child(4n+1){border-top:3px solid var(--primary)}
.stat:nth-child(4n+2){border-top:3px solid var(--cyan)}
.stat:nth-child(4n+3){border-top:3px solid var(--green)}
.stat:nth-child(4n+4){border-top:3px solid var(--orange)}
.stat strong,.stat-card strong{font-size:28px;color:#fff}

table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border:1px solid var(--border);border-radius:15px;background:#0d1423}
th{
  background:linear-gradient(135deg,#1a2540,#171d32);
  color:#dce7ff;font-weight:700;padding:13px;border-bottom:1px solid var(--border)
}
td{padding:12px;border-bottom:1px solid rgba(38,51,77,.65);color:#d7e1f2}
tr:last-child td{border-bottom:0}
tbody tr{transition:.18s}
tbody tr:hover{background:rgba(124,92,255,.08)}

label{display:block;color:#c9d5eb;font-weight:600;margin:0 0 7px}
input,select,textarea{
  width:100%;background:#0a1020;color:#eef4ff;border:1px solid #2a3957;
  border-radius:12px;padding:11px 13px;outline:none;transition:.2s
}
input:focus,select:focus,textarea:focus{
  border-color:var(--cyan);box-shadow:0 0 0 3px rgba(25,211,255,.12)
}
input::placeholder,textarea::placeholder{color:#667792}
option{background:#111827;color:#fff}

button,.btn{
  border:0!important;border-radius:12px!important;padding:10px 16px!important;
  color:#fff!important;font-weight:700;cursor:pointer;transition:.2s;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  box-shadow:0 7px 18px rgba(92,84,220,.22)
}
button:hover,.btn:hover{transform:translateY(-2px);filter:brightness(1.12)}
.btn-primary{background:linear-gradient(135deg,#7c5cff,#4f7cff)!important}
.btn-success{background:linear-gradient(135deg,#12b886,#21d19f)!important}
.btn-danger{background:linear-gradient(135deg,#ff466d,#ff6b8a)!important}
.btn-warning{background:linear-gradient(135deg,#f59f00,#ffc857)!important;color:#241800!important}
.btn-info{background:linear-gradient(135deg,#009fca,#19d3ff)!important}
.btn-secondary{background:linear-gradient(135deg,#475569,#64748b)!important}

.alert,.flash{
  border-radius:14px;padding:13px 16px;margin:12px 0;border:1px solid
}
.alert-success,.flash.success{background:rgba(33,209,159,.10);border-color:#1b9c7c;color:#6ff0c5}
.alert-danger,.flash.danger{background:rgba(255,85,119,.10);border-color:#c74361;color:#ff9ab0}
.alert-warning{background:rgba(255,200,87,.10);border-color:#b7892f;color:#ffd878}
.alert-info{background:rgba(25,211,255,.10);border-color:#168eac;color:#78e8ff}

.badge,.tag{
  display:inline-flex;align-items:center;gap:5px;padding:5px 10px;border-radius:999px;
  background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.35);color:#cfc4ff;font-size:13px
}
.badge-success{background:rgba(33,209,159,.12);border-color:#197e65;color:#6ff0c5}
.badge-danger{background:rgba(255,85,119,.12);border-color:#9d3c54;color:#ff9ab0}
.badge-warning{background:rgba(255,200,87,.12);border-color:#a47c2d;color:#ffd878}

form{margin-bottom:10px}
form > div{margin-bottom:10px}
hr{border:0;border-top:1px solid var(--border);margin:22px 0}

.login,.login-container{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(circle at 50% 15%,rgba(124,92,255,.25),transparent 35%),var(--bg)
}
.login .card,.login-container .card{width:min(460px,100%);padding:32px}
.login h1,.login-container h1{
  text-align:center;background:linear-gradient(90deg,var(--cyan),var(--primary),var(--pink));
  -webkit-background-clip:text;background-clip:text;color:transparent
}

.dashboard-title{
  display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap;margin-bottom:20px
}

footer{color:#71819b;text-align:center;padding:30px}

@media(max-width:700px){
  .container,.content,.main{padding:14px}
  .card,.panel,.box{padding:16px}
  th,td{padding:9px 7px;font-size:13px}
  h1{font-size:24px}
  .nav,.navbar{padding:9px}
}


/* ===== APP SHELL / SIDEBAR ===== */
body{
  overflow-x:hidden;
}
.top{
  position:sticky;
  top:0;
  z-index:1000;
  min-height:72px;
  padding:12px 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  background:rgba(8,11,20,.88);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(124,92,255,.25);
  box-shadow:0 10px 35px rgba(0,0,0,.35);
}
.top > div:first-child{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:20px;
  font-weight:800;
}
.top > div:first-child:before{
  content:"🏫";
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  border-radius:13px;
  background:linear-gradient(135deg,#7c5cff,#19d3ff);
  box-shadow:0 8px 25px rgba(124,92,255,.28);
}
.top > div:last-child{
  display:flex;
  align-items:center;
  gap:10px;
  color:#aab8d0;
}
.top a{
  color:#fff!important;
  padding:8px 13px;
  border-radius:10px;
  background:rgba(255,85,119,.10);
  border:1px solid rgba(255,85,119,.25);
}
.top a:hover{
  background:rgba(255,85,119,.20);
}

.app{
  min-height:calc(100vh - 72px);
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  direction:ltr;
}
.app aside{
  direction:rtl;
  position:sticky;
  top:72px;
  height:calc(100vh - 72px);
  overflow-y:auto;
  padding:20px 14px;
  background:linear-gradient(180deg,#0d1322 0%,#090e19 100%);
  border-left:1px solid #202c43;
  box-shadow:12px 0 35px rgba(0,0,0,.20);
}
.app aside:before{
  content:"پنل مدیریت";
  display:block;
  padding:4px 13px 14px;
  color:#7384a3;
  font-size:12px;
  font-weight:700;
  letter-spacing:.3px;
}
.app aside a{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:46px;
  margin:6px 0;
  padding:10px 13px;
  border-radius:13px;
  color:#b9c7dd!important;
  font-size:14px;
  font-weight:600;
  border:1px solid transparent;
  transition:all .18s ease;
}
.app aside a:hover{
  color:#fff!important;
  transform:translateX(-3px);
  background:linear-gradient(90deg,rgba(124,92,255,.20),rgba(25,211,255,.06));
  border-color:rgba(124,92,255,.22);
}
.app aside a[href="dashboard.php"]:before{content:"🏠"}
.app aside a[href="teachers.php"]:before{content:"👨‍🏫"}
.app aside a[href="classes.php"]:before{content:"🏫"}
.app aside a[href="students.php"]:before{content:"👨‍🎓"}
.app aside a[href="students_import.php"]:before{content:"📥"}
.app aside a[href="schedules.php"]:before{content:"📅"}
.app aside a[href="subjects.php"]:before{content:"📚"}
.app aside a[href="logs.php"]:before{content:"🔐"}
.app aside a[href="reports.php"]:before{content:"📊"}
.app aside a[href="my_classes.php"]:before{content:"🧑‍🏫"}
.app aside a:before{
  width:26px;
  min-width:26px;
  height:26px;
  display:grid;
  place-items:center;
  border-radius:8px;
  background:rgba(124,92,255,.10);
}
.app main{
  direction:rtl;
  min-width:0;
  padding:28px;
  max-width:none;
}
.app aside a[href="logs.php"]{
  color:#d9ccff!important;
  background:rgba(124,92,255,.07);
}
.app aside a[href="reports.php"]{
  color:#79e7ff!important;
  background:rgba(25,211,255,.05);
}

/* Make common action links look like UI buttons */
main a.btn, main button.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px}

/* Mobile sidebar */
@media(max-width:900px){
  .top{padding:10px 14px;min-height:64px}
  .app{display:block}
  .app aside{
    position:sticky;
    top:64px;
    height:auto;
    max-height:none;
    z-index:900;
    display:flex;
    overflow-x:auto;
    overflow-y:hidden;
    gap:6px;
    padding:9px 10px;
    border-left:0;
    border-bottom:1px solid #202c43;
  }
  .app aside:before{display:none}
  .app aside a{
    flex:0 0 auto;
    min-height:40px;
    margin:0;
    padding:8px 11px;
    font-size:12px;
    white-space:nowrap;
  }
  .app main{padding:16px}
}
@media(max-width:520px){
  .top > div:first-child{font-size:15px}
  .top > div:first-child:before{width:36px;height:36px}
  .top > div:last-child{font-size:12px}
}