:root{--bg:#f5f6fa;--surface:#fff;--surface-2:#f0f2f7;--text:#1f2430;--muted:#73798a;--border:#e3e6ee;--primary:#6558e8;--primary-dark:#5144d2;--success:#20a36a;--warning:#e3a22b;--danger:#d9475c;--sidebar:#141824;--shadow:0 8px 24px rgba(24,30,50,.06);font-family:Tahoma,"Vazirmatn",Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 0 0 auto;width:250px;background:var(--sidebar);color:#fff;display:flex;flex-direction:column;padding:22px 16px;z-index:50}.brand{display:flex;align-items:center;gap:12px}.brand-icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#7568ff,#4a3fd0);display:grid;place-items:center;box-shadow:0 8px 20px rgba(101,88,232,.35)}.brand strong,.brand small{display:block}.brand strong{font-size:17px}.brand 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