:root{
  --bg:#061f18;
  --card:#082a20;
  --card2:#0b3b2d;
  --text:#ffffff;
  --muted:#cde4dc;
  --green:#0b6b4f;
  --line:rgba(16,185,129,.25);
  --shadow:0 10px 35px rgba(0,0,0,.25);
}

body:not(.dark){
  --bg:#f7faf8;
  --card:#ffffff;
  --card2:#eef7f2;
  --text:#0f2f24;
  --muted:#66736d;
  --green:#0b6b4f;
  --line:#e5ece8;
  --shadow:0 10px 30px rgba(0,0,0,.07);
}

*{box-sizing:border-box}
html,body{
  margin:0;
  min-height:100%;
  background:var(--bg);
  color:var(--text);
  font-family:Arial,sans-serif;
  direction:rtl;
}
a{text-decoration:none;color:inherit}

.app{
  padding:14px;
  padding-bottom:92px;
}

.hero{
  background:linear-gradient(135deg,#063f31,#082a20);
  border-radius:28px;
  padding:24px;
  box-shadow:var(--shadow);
  margin-bottom:18px;
}
.hero-top{
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.logo{font-size:26px;font-weight:bold}
.theme-btn{
  border:1px solid var(--line);
  background:rgba(255,255,255,.08);
  color:var(--text);
  border-radius:999px;
  padding:10px 14px;
}
.welcome{
  margin-top:22px;
  background:rgba(255,255,255,.08);
  border-radius:22px;
  padding:24px;
}
.welcome h1{margin:0 0 8px}
.welcome p{margin:0;color:var(--muted)}

.notice,.lesson-item,.book-card,.account-card,.chat-box{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:22px;
  padding:18px;
  box-shadow:var(--shadow);
}

.section-list,.lesson-list{
  display:grid;
  gap:14px;
}
.section-card{
  display:grid;
  grid-template-columns:70px 70px 1fr 24px;
  gap:10px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:22px;
  padding:14px;
}
.count{
  background:rgba(16,185,129,.12);
  border-radius:14px;
  padding:8px;
  text-align:center;
}
.count b{display:block;font-size:20px}
.section-title{font-size:21px;font-weight:bold}
.arrow{font-size:26px;color:var(--muted)}
.btn{
  display:inline-block;
  background:var(--green);
  color:white;
  border:0;
  border-radius:12px;
  padding:12px 18px;
  cursor:pointer;
}
input,textarea,select{
  width:100%;
  padding:14px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
  color:var(--text);
}
.bottom-nav{
  position:fixed;
  bottom:0;
  right:0;
  left:0;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  background:var(--card);
  border-top:1px solid var(--line);
  padding:9px;
  z-index:999;
}
.bottom-nav a{text-align:center;font-size:11px;padding:7px 1px;border-radius:14px}
.bottom-nav .ico{display:block;font-size:19px}
.bottom-nav a.active{background:rgba(16,185,129,.15);color:#10b981}

.account-profile{
  text-align:center;
  padding:22px;
  border-radius:22px;
  background:rgba(16,185,129,.10);
  margin-bottom:16px;
}
.account-avatar{
  width:76px;height:76px;border-radius:50%;
  margin:0 auto 12px;
  background:var(--green);
  display:flex;align-items:center;justify-content:center;
  font-size:38px;
}
.account-actions-horizontal{
  display:grid;
  gap:12px;
}
.account-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  border:1px solid var(--line);
  border-radius:18px;
  padding:16px;
}
.danger{color:#dc2626}

.chat-box{
  height:62vh;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.msg{max-width:82%;padding:12px 14px;border-radius:18px;line-height:1.7}
.msg.me{align-self:flex-end;background:#0b6b4f;color:white}
.msg.other{align-self:flex-start;background:rgba(16,185,129,.12)}
.chat-form{display:flex;gap:8px;margin-top:12px}
.chat-tools{display:flex;gap:8px;margin-top:8px}
.chat-tools .btn{flex:1;font-size:13px}

.desktop-side{display:none}

@media(min-width:901px){
  body{background:#061f18 !important;overflow-x:hidden}
  .desktop-side{
    display:flex;
    position:fixed;
    top:0;
    right:0;
    width:320px;
    height:100vh;
    background:#061f18;
    border-left:1px solid var(--line);
    padding:24px;
    flex-direction:column;
    gap:18px;
    z-index:1000;
  }
  .desktop-logo{
    border:1px solid var(--line);
    padding:22px;
    text-align:center;
    font-size:24px;
    font-weight:bold;
  }
  .desktop-menu{display:grid;gap:12px}
  .desktop-menu a{
    display:flex;
    justify-content:space-between;
    align-items:center;
    border:1px solid var(--line);
    border-radius:16px;
    padding:16px 18px;
    background:rgba(255,255,255,.025);
    font-weight:bold;
  }
  .desktop-menu a.active{
    background:rgba(16,185,129,.18);
    color:#10b981;
  }
  .desktop-download{
    margin-top:auto;
    background:#087655;
    color:white;
    border-radius:18px;
    padding:18px;
    text-align:center;
    font-weight:bold;
  }

  .app{
    width:calc(100vw - 320px);
    margin:0 320px 0 0;
    padding:28px 36px 80px;
    background:#061f18;
    min-height:100vh;
  }

  .bottom-nav{display:none}
  main{width:100%;max-width:none}
  .hero{min-height:190px;margin-bottom:26px}
  .welcome{padding:32px}

  .account-card{
    width:760px;
    max-width:calc(100vw - 420px);
    margin:32px auto 0;
    padding:24px;
  }
  .account-actions-horizontal{
    grid-template-columns:repeat(2,1fr);
  }

  .chat-box{
    width:100%;
    height:65vh;
  }
  .chat-form,.chat-tools{
    width:100%;
  }
}