/* css/style.css */
* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: sans-serif;
  direction: rtl;
  color: #eaf2ff;
  background: radial-gradient(circle at 20% 30%, #0b3d91 0%, #071b2e 40%, #0a3b36 100%);
  overflow: hidden; /* ✅ اسکرول کلی صفحه بسته */
}

/* ====== shared ====== */
a { color: inherit; text-decoration: none; }
.container {
  height: 100vh;          /* ✅ به جای min-height */
  overflow: hidden;       /* ✅ اسکرول داخل خود container هم نباشه */
  display: flex;
  flex-direction: row-reverse; /* ✅ سایدبار سمت راست */
  gap: 18px;
  padding: 18px;
  min-height: 0;          /* ✅ برای اینکه داخل flex ارتفاع درست حساب شود */
}

/* ====== login ====== */
.auth-wrap{
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card{
  width: min(920px, 95vw);
  border-radius: 18px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(10px);
  padding: 26px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.35);
}
.auth-title{ font-size: 28px; font-weight: 700; margin: 0 0 6px; }
.auth-sub{ margin: 0 0 18px; opacity: 0.85; }

.form-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.field{
  display: grid;
  gap: 6px;
}
.label{ opacity: 0.9; font-size: 14px; }
.input{
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.92);
  color: #0c1a2a;
  outline: none;
}
.btn{
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(18,88,145,0.55);
  color: #fff;
  cursor: pointer;
  transition: 0.15s;
}
.btn:hover{ transform: translateY(-1px); filter: brightness(1.05); }
.btn:disabled{ opacity: 0.5; cursor: not-allowed; }

/* ====== app layout (RIGHT sidebar like teacher) ====== */
.sidebar{
  width: 300px;
  flex: 0 0 300px;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(10px);
  padding: 14px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.25);

  height: 100%;           /* ✅ هم‌قد container */
  overflow-y: auto;       /* ✅ اسکرول مستقل سایدبار */
  overflow-x: hidden;
  min-height: 0;          /* ✅ برای flex */
}

.main{
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;

  height: 100%;           /* ✅ هم‌قد container */
  overflow-y: auto;       /* ✅ اسکرول مستقل محتوا */
  overflow-x: hidden;
  min-height: 0;          /* ✅ خیلی مهم */
}

.topbar{
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
  border-radius: 18px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(10px);
}
.search{
  flex: 1;
  max-width: 520px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.10);
  color: #eaf2ff;
  outline: none;
}
.pill{
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.12);
  opacity: 0.95;
}

/* sidebar header */
.side-head{
  border-radius: 16px;
  padding: 14px 12px;
  background: rgba(0,0,0,0.16);
  border: 1px solid rgba(255,255,255,0.10);
  margin-bottom: 10px;
}
.side-title{ font-weight: 800; font-size: 16px; }
.side-user{ opacity: 0.85; margin-top: 6px; font-size: 13px; }

/* menu */
.menu{ display: grid; gap: 10px; }
.menu-item,
.menu-toggle{
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 12px;
  border-radius: 16px;
  background: rgba(0,0,0,0.14);
  border: 1px solid rgba(255,255,255,0.10);
  cursor: pointer;
  user-select: none;
}
.menu-left{
  display: flex;
  align-items: center;
  gap: 10px;
}
.icon{
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.10);
  font-size: 14px;
}
.chev{ opacity: 0.8; transition: 0.2s; }
.menu-toggle[aria-expanded="true"] .chev{ transform: rotate(180deg); }

.submenu{
  margin: -6px 0 8px;
  padding: 8px 8px 2px;
  border-radius: 16px;
  background: rgba(0,0,0,0.10);
  border: 1px solid rgba(255,255,255,0.08);
  display: none;
}
.menu-toggle[aria-expanded="true"] + .submenu{ display: block; }

.sub-item{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 14px;
  opacity: 0.92;
  margin-bottom: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
}
.sub-item:hover{ filter: brightness(1.05); }
.sub-item.disabled{
  opacity: 0.45;
  cursor: not-allowed;
}
.sub-item.disabled:hover{ filter: none; }

/* logout */
.logout{
  margin-top: 10px;
  background: rgba(145, 18, 42, 0.25);
  border: 1px solid rgba(255,255,255,0.12);
}

/* dashboard content */
.panel{
  border-radius: 18px;
  padding: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(10px);
}

.cards{
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.card{
  border-radius: 18px;
  padding: 14px;
  background: rgba(0,0,0,0.16);
  border: 1px solid rgba(255,255,255,0.10);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card h4{
  margin: 0 0 6px;
  font-size: 13px;
  opacity: 0.9;
}
.card .val{
  font-size: 18px;
  font-weight: 800;
}
.small-note{
  opacity: 0.75;
  font-size: 12px;
  margin-top: 10px;
}

/* responsive */
@media (max-width: 1100px){
  .cards{ grid-template-columns: repeat(2, minmax(180px, 1fr)); }
  .sidebar{ width: 270px; flex-basis: 270px; }
}
@media (max-width: 820px){
  .container{ flex-direction: column; }
  .sidebar{ width: 100%; flex-basis: auto; }
  .cards{ grid-template-columns: 1fr; }

  /* ✅ در موبایل هم همچنان اسکرول‌ها مستقل بمانند */
  .sidebar{ height: 40vh; } /* سایدبار کوتاه‌تر تا main جا داشته باشد */
  .main{ height: 60vh; }
}