@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Arabic:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #0f172a; --bg2: #1e293b; --bg3: #334155;
  --card: #1e293b; --border: #334155;
  --accent: #38bdf8; --accent2: #818cf8; --accent3: #34d399;
  --accent4: #fb923c; --accent5: #f472b6; --accent6: #a78bfa;
  --text: #f1f5f9; --text2: #94a3b8; --text3: #64748b;
  --radius: 20px; --radius-sm: 12px;
  --header-bg: rgba(15,23,42,0.95);
}
:root.light {
  --bg: #f1f5f9; --bg2: #e2e8f0; --bg3: #cbd5e1;
  --card: #ffffff; --border: #e2e8f0;
  --accent: #0284c7; --accent2: #6366f1; --accent3: #059669;
  --accent4: #ea580c; --accent5: #db2777; --accent6: #7c3aed;
  --text: #0f172a; --text2: #475569; --text3: #94a3b8;
  --header-bg: rgba(241,245,249,0.95);
}

*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'IBM Plex Sans Arabic',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden;transition:background 0.3s,color 0.3s}
body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse at 20% 20%,rgba(56,189,248,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(129,140,248,0.08) 0%,transparent 50%);pointer-events:none;z-index:0}
:root.light body::before{background:radial-gradient(ellipse at 20% 20%,rgba(2,132,199,0.06) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(99,102,241,0.06) 0%,transparent 50%)}

.app{max-width:480px;margin:0 auto;min-height:100vh;position:relative;z-index:1}

.header{padding:20px 20px 16px;text-align:center;position:sticky;top:0;background:var(--header-bg);backdrop-filter:blur(20px);border-bottom:1px solid rgba(51,65,85,0.5);z-index:100;position:relative}
.header-title{font-size:22px;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-sub{font-size:12px;color:var(--text3);margin-top:2px}

.theme-toggle{position:absolute;left:14px;top:50%;transform:translateY(-50%);background:var(--bg3);border:1px solid var(--border);border-radius:50px;width:52px;height:28px;cursor:pointer;display:flex;align-items:center;padding:3px;transition:background 0.3s}
.theme-toggle-knob{width:22px;height:22px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform 0.3s cubic-bezier(.34,1.56,.64,1);transform:translateX(0)}
:root.light .theme-toggle-knob{transform:translateX(24px)}

.page{padding:20px 20px 40px;animation:slideIn 0.3s ease}
@keyframes slideIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

.back-btn{background:none;border:none;color:var(--text2);font-family:inherit;font-size:14px;cursor:pointer;padding:8px 0;margin-bottom:16px;display:flex;align-items:center;gap:6px;transition:color 0.2s}
.back-btn:hover{color:var(--accent)}
.page-title{font-size:20px;font-weight:700;margin-bottom:20px;background:linear-gradient(135deg,var(--text),var(--text2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px;transition:background 0.3s,border-color 0.3s}
.card-title{font-size:14px;font-weight:600;color:var(--text2);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.card-title span{font-size:18px}

input[type="text"],input[type="number"],select{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;color:var(--text);font-family:inherit;font-size:16px;outline:none;transition:border-color 0.2s;direction:rtl}
input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(56,189,248,0.1)}
select option{background:var(--bg2)}
input[type="number"]{direction:ltr;text-align:right}
input[type="date"]{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;color:var(--text);font-family:inherit;font-size:16px;outline:none;transition:border-color 0.2s;margin-bottom:14px}

.date-row{display:grid;grid-template-columns:2fr 2fr 3fr;gap:8px}

.btn{width:100%;padding:14px;border:none;border-radius:var(--radius-sm);font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:all 0.2s;margin-bottom:10px}
.btn:active{transform:scale(0.97)}
.btn-primary{background:linear-gradient(135deg,var(--accent),#0ea5e9);color:#0f172a}
.btn-success{background:linear-gradient(135deg,var(--accent3),#059669);color:#0f172a}
.btn-purple{background:linear-gradient(135deg,var(--accent2),#6366f1);color:white}

.result-box{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;margin-top:14px;text-align:center;display:none}
.result-box.show{display:block;animation:fadeIn 0.3s ease}
@keyframes fadeIn{from{opacity:0;transform:scale(0.97)}to{opacity:1;transform:scale(1)}}
.result-main{font-size:22px;font-weight:700;color:var(--accent);margin-bottom:6px}
.result-sub{font-size:14px;color:var(--text2);margin-bottom:4px}

.tabs{display:flex;gap:8px;margin-bottom:16px;background:var(--bg);padding:4px;border-radius:var(--radius-sm)}
.tab{flex:1;padding:10px;background:none;border:none;border-radius:8px;color:var(--text3);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:all 0.2s}
.tab.active{background:var(--card);color:var(--text);border:1px solid var(--border)}

.footer{text-align:center;padding:24px 0 32px;color:var(--text3);font-size:13px}
.footer-star{margin-bottom:4px;font-size:18px}

/* Theme JS shared */