:root{--primary: #1a73e8;--primary-dark: #1557b0;--secondary: #5f6368;--bg-main: #f8f9fa;--bg-card: #ffffff;--text-main: #202124;--text-muted: #5f6368;--border: #dadce0;--success: #1e8e3e;--danger: #d93025;--sidebar-width: 260px;--shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--radius: 12px;--header-height: 60px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,Outfit,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol;background-color:var(--bg-main);color:var(--text-main);line-height:1.5}.premium-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:1.5rem;border:1px solid var(--border);transition:transform .2s ease,box-shadow .2s ease}.premium-card:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #0000001a}.btn{padding:.6rem 1.2rem;border-radius:8px;border:none;font-weight:600;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:.5rem;font-size:.9rem}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-main)}.btn-outline:hover{background:#f1f3f4}.input{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:8px;outline:none;transition:border-color .2s;font-size:.95rem}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1a73e81a}.app-container{display:flex;min-height:100vh}.main-content{flex:1;padding:2rem;background:var(--bg-main);overflow-y:auto;min-width:0}.sidebar{width:var(--sidebar-width);height:100vh;position:sticky;top:0;transition:transform .3s ease;z-index:1000}.sidebar-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:999}.responsive-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}@media(max-width:1024px){.responsive-grid{grid-template-columns:1fr}}@media(max-width:768px){.app-container{flex-direction:column}.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);transform:translate(-100%);z-index:2000}.sidebar.open{transform:translate(0)}.sidebar-overlay.show{display:block;z-index:1500}.main-content{padding:1rem;padding-top:calc(var(--header-height) + 1rem);width:100%}}.modal-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:3000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:#fff;border-radius:var(--radius);width:90%;max-width:500px;max-height:90vh;overflow-y:auto;position:relative;box-shadow:0 20px 25px -5px #0003}.mobile-header{display:none;height:var(--header-height);background:#fff;border-bottom:1px solid var(--border);align-items:center;padding:0 1rem;position:fixed;top:0;left:0;right:0;z-index:900;box-shadow:var(--shadow-sm)}@media(max-width:768px){.mobile-header{display:flex;justify-content:space-between}}