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h1{font-size:2rem}.courses-header,.settings-header,.certificates-header{flex-direction:column;gap:20px}.courses-stats{gap:20px}.courses-grid,.certificates-grid{grid-template-columns:1fr}.profile-tabs{flex-wrap:wrap}.tab-btn{flex:1 0 50%;padding:15px}.tab-content{padding:20px}}@media (max-width:480px){.profile-card{padding:20px}.avatar-wrapper{width:120px;height:120px}.stats-grid{grid-template-columns:1fr}.setting-item{flex-direction:column;align-items:flex-start;gap:15px}.setting-value{justify-content:flex-start;width:100%}}