* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: #0f0f1a;
    color: #e0e0ff;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 25% 15%, rgba(100,80,255,0.08) 0%, transparent 25%),
        radial-gradient(circle at 75% 85%, rgba(0,200,255,0.06) 0%, transparent 35%);
    background-attachment: fixed;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

header {
    text-align: center;
    padding: 2.5rem 0 3rem;
}

header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, #a78bfa, #7dd3fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Informacje */
.info-card {
    background: rgba(20,25,45,0.65);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(120,120,255,0.18);
    border-radius: 16px;
    padding: 1.6rem 2rem;
    margin: 0 0 2.5rem;
    font-size: 1.1rem;
    line-height: 1.6;
    color: #d0d0ff;
}

/* Sekcje */
.category {
    margin-bottom: 3.5rem;
}

.category h2 {
    font-size: 1.7rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #a5b4fc;
}

.category h2 i {
    margin-right: 0.6rem;
    color: #7dd3fc;
    opacity: 0.85;
}

.grid {
    display: grid;
    gap: 2rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.card {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
    background: rgba(25,30,60,0.55);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(100,120,255,0.15);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.28s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(80,100,255,0.22);
    border-color: rgba(140,160,255,0.35);
    background: rgba(35,40,75,0.65);
}

.card-content {
    padding: 1.8rem 1.2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 0.9rem;
}

.card-content .icon-big {
    font-size: 2.4rem;
    color: #a5b4fc;
    margin-bottom: 0.4rem;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.card:hover .icon-big {
    color: #c084fc;
    transform: scale(1.15);
    opacity: 1;
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #e0e0ff;
}

/* Logowanie */
.login-container {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.login-card {
    background: rgba(20,25,45,0.75);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(120,120,255,0.2);
    border-radius: 20px;
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.login-card h1 {
    margin-bottom: 2rem;
    font-size: 2.2rem;
    background: linear-gradient(90deg, #c084fc, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-card input {
    width: 100%;
    padding: 1rem 1.2rem;
    margin-bottom: 1.2rem;
    border: 1px solid rgba(140,140,255,0.3);
    border-radius: 10px;
    background: rgba(10,15,35,0.6);
    color: white;
    font-size: 1.1rem;
}

.login-card button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(90deg, #7c3aed, #3b82f6);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.login-card button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99,102,241,0.4);
}

/* Responsywność */
@media (max-width: 768px) {
    header h1 { font-size: 2.3rem; }
    .category h2 { font-size: 1.5rem; }
    .cards { grid-template-columns: 1fr; }
    .login-card { padding: 2.5rem 1.8rem; }
}