/* STREAMING_CHUNK: Applying core styles... /
/ A1 Upgrade LMS - Master Custom CSS /
:root {
--primary: #10b981; / Emerald Green /
--primary-dark: #059669;
--secondary: #ef4444; / Red */
--bg-light: #f9fafb;
--text-main: #1f2937;
--text-muted: #6b7280;
--border-color: #e5e7eb;
--surface: #ffffff;
--radius: 0.5rem;
}

{ margin: 0; padding: 0; box-sizing: border-box; }
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
background-color: var(--bg-light);
color: var(--text-main);
line-height: 1.5;
-webkit-font-smoothing: antialiased;
display: flex;
flex-direction: column;
min-height: 100vh;
}

/* Utilities */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-col { flex-direction: column; }
.gap-4 { gap: 1rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.text-center { text-align: center; }
.w-full { width: 100%; }

/* STREAMING_CHUNK: Styling UI elements... /
/ Buttons */
.btn {
display: inline-block; padding: 0.75rem 1.5rem; font-weight: 600;
border-radius: var(--radius); text-decoration: none; cursor: pointer;
border: none; transition: background-color 0.2s, transform 0.1s; text-align: center;
}
.btn-primary { background-color: var(--primary); color: white; }
.btn-primary:hover { background-color: var(--primary-dark); }
.btn-secondary { background-color: var(--secondary); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-main); }
.btn-outline:hover { background: var(--bg-light); }
.btn-block { display: block; width: 100%; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; margin-bottom: 0.5rem; font-weight: 500; font-size: 0.875rem; }
.form-control {
width: 100%; padding: 0.75rem; border: 1px solid var(--border-color);
border-radius: var(--radius); font-size: 1rem; transition: border-color 0.2s;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1); }

/* Layout Components */
.header { background: var(--surface); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 40; }
.navbar { height: 70px; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--primary); text-decoration: none; }
.nav-links a { color: var(--text-main); text-decoration: none; margin-left: 1.5rem; font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

.card { background: var(--surface); border-radius: var(--radius); box-shadow: 0 1px 3px rgba(0,0,0,0.1); padding: 2rem; }
.auth-container { max-width: 450px; margin: 4rem auto; }

/* Mobile Menu & Bottom Nav */
.mobile-only { display: none; }
.desktop-only { display: flex; }
.mobile-toggle { background: transparent; border: none; cursor: pointer; color: var(--text-main); }
.mobile-menu { display: none; flex-direction: column; background: var(--surface); border-bottom: 1px solid var(--border-color); padding: 1rem; }
.mobile-menu.active { display: flex; }
.mobile-menu a { padding: 0.75rem; color: var(--text-main); text-decoration: none; font-weight: 500; border-bottom: 1px solid var(--bg-light); }

.bottom-nav { position: fixed; bottom: 0; left: 0; width: 100%; background: var(--surface); border-top: 1px solid var(--border-color); display: flex; justify-content: space-around; padding: 0.5rem 0; z-index: 50; }
.bottom-nav a { display: flex; flex-direction: column; align-items: center; text-decoration: none; color: var(--text-muted); font-size: 0.75rem; font-weight: 500; }

@media (max-width: 768px) {
.desktop-only { display: none !important; }
.mobile-only { display: block; }
.bottom-nav.mobile-only { display: flex; }
body { padding-bottom: 60px; /* Space for bottom nav */ }
}