*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Poppins',sans-serif;
}

body{
    min-height:100vh;
    overflow-x:hidden;

    background:
    radial-gradient(
        circle at 50% 0%,
        rgba(63,169,245,.18),
        transparent 55%
    ),
    linear-gradient(
        135deg,
        #0A1E33 0%,
        #1A4C8B 55%,
        #3FA9F5 100%
    );

    color:white;
}

.dashboard-container{
    display:flex;
    min-height:calc(100vh - 80px);
}

/* Sidebar */

.sidebar{
    width:260px;

    background:rgba(10,30,51,.92);

    backdrop-filter:blur(20px);

    border-right:1px solid rgba(255,255,255,0.08);

    padding:25px;
}

.sidebar nav{
    display:flex;
    flex-direction:column;
    gap:12px;
}

.sidebar a{
    text-decoration:none;
    color:#cbd5e1;
    padding:14px 18px;
    border-radius:12px;
    display:flex;
    gap:12px;
    align-items:center;
    transition:.3s;
}

.sidebar a:hover,
.sidebar a.active{
    background:linear-gradient(
        135deg,
        #3FA9F5,
        #2563EB
    );

    color:white;

    box-shadow:
    0 6px 20px rgba(63,169,245,.25);
}

/* Main */

.main-content{
    flex:1;
    padding:40px;
}

.welcome h1{
    font-size:42px;
    margin-bottom:10px;
}

.welcome p{
    color:#B8C4D4;
    margin-bottom:35px;
}

/* Cards */

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));
    gap:25px;
}

.card{
    background:linear-gradient(
        145deg,
        #172537 0%,
        #11171F 100%
    );

    border:1px solid #243447;

    border-radius:20px;

    padding:25px;

    box-shadow:
    0 20px 50px rgba(10,30,51,.35);

    transition:.3s;
}

.card:hover{

    border-color:#3FA9F5;

    transform:translateY(-4px);

    box-shadow:
    0 20px 60px rgba(63,169,245,.25);
}

.card h3{
    margin-bottom:20px;
}

.card h4{
    color:#00E5FF;
    margin-bottom:10px;
}

.progress-bar{
    width:100%;
    height:10px;
    background:#334155;
    border-radius:999px;
    overflow:hidden;
    margin:15px 0;
}

.progress{
    height:100%;
    background:linear-gradient(
        90deg,
        #00E5FF,
        #A6E22E
    );
}

/* Scoped to cards only — does not bleed to other buttons */
.card button,
.card .continue-btn {
    display:flex;
    justify-content:center;
    align-items:center;
    width:100%;
    border:none;
    margin-top:20px;
    padding:14px;
    border-radius:12px;
    cursor:pointer;
    color:white;
    font-weight:600;
    background:linear-gradient(
        135deg,
        #2563eb,
        #7c3aed
    );
    text-decoration:none;
    font-family:'Poppins',sans-serif;
}

.stats{
    display:flex;
    justify-content:space-between;
    margin-top:25px;
}

.stats span{
    color:#94a3b8;
}

.stats h2{
    margin-top:8px;
}

.ranking-card{
    text-align:center;
}

.medal{
    font-size:60px;
    margin:20px 0;
}

.ranking-card h1{
    font-size:52px;
}

.ranking-card small{
    color:#22c55e;
}

/* Bottom */

.bottom-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));
    gap:25px;
    margin-top:25px;
}

.skill{
    margin-top:20px;
}

.skill-head{
    display:flex;
    justify-content:space-between;
}

.suggestion{
    padding:18px;
    background:#172537;
    border-left:4px solid #60a5fa;
    border-radius:10px;
    margin-top:15px;
}

.suggestions-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
    gap:18px;
    margin-top:20px;
}

.suggestion{
    padding:20px;
    border-radius:14px;
    background:#172537;
}

.suggestion h4{
    margin-bottom:10px;
    font-size:18px;
}

.suggestion p{
    color:#94a3b8;
    font-size:14px;
}

.blue{
    border-left:4px solid #3b82f6;
}

.green{
    border-left:4px solid #84cc16;
}

.dark{
    border-left:4px solid #2563eb;
}

.dark{
    grid-column:1;
}

.card .continue-btn{
    display:flex;
    justify-content:center;
    align-items:center;
    width:100%;
    margin-top:20px;
    padding:14px;
    border-radius:12px;
    text-decoration:none;
    color:#0A1E33;
    font-weight:700;
    background:linear-gradient(
        135deg,
        #00E5FF,
        #A6E22E
    );
}

.welcome h1 {
    font-size: clamp(1.5rem, 4vw, 2.6rem);
    margin-bottom: 10px;
}

@media(max-width:768px){
    .main-content {
        padding: 20px 16px;
    }
    .cards {
        grid-template-columns: 1fr;
    }
    .bottom-grid {
        grid-template-columns: 1fr;
    }
    .suggestions-grid {
        grid-template-columns: 1fr;
    }
}

@media(max-width:480px){
    .main-content {
        padding: 16px 12px;
    }
    .ranking-card h1 {
        font-size: 36px;
    }
    .medal {
        font-size: 44px;
        margin: 12px 0;
    }
}