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

/* BODY */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #1e293b, #020617);
    color: #f1f5f9;
    min-height: 100vh;
    padding: 40px 20px;
}

/* APP */
.app {
    max-width: 1000px;
    margin: auto;
}

/* TITLE */
h1 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    letter-spacing: -0.5px;
}

/* GRID */
.grid {
    display: grid;
    gap: 20px;
}

/* CARDS (APPLE STYLE GLASS) */
.card {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 20px;
    backdrop-filter: blur(15px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
    transition: 0.3s;
}

/* HOVER CARD */
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

/* FULL WIDTH */
.full {
    grid-column: 1 / -1;
}

/* HEADINGS */
h2 {
    margin-bottom: 15px;
    font-weight: 500;
}

/* INPUT */
input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(2, 6, 23, 0.8);
    color: white;
    font-size: 0.95rem;
    transition: 0.2s;
}

/* INPUT FOCUS */
input:focus {
    outline: none;
    border: 1px solid #38bdf8;
    box-shadow: 0 0 0 2px rgba(56,189,248,0.3);
}

/* BUTTON */
button {
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #020617;
    font-weight: 600;
    cursor: pointer;
    transition: 0.25s;
    margin-bottom: 10px;
}

/* BUTTON HOVER */
button:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 25px rgba(56,189,248,0.4);
}

/* GHOST BUTTON */
button.ghost {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: #94a3b8;
}

button.ghost:hover {
    background: rgba(255,255,255,0.05);
}

/* LIST */
ul {
    list-style: none;
}

/* BOOK ITEM (NETFLIX STYLE) */
li {
    padding: 14px;
    border-radius: 14px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 10px;
    transition: 0.25s;
}

/* HOVER ITEM */
li:hover {
    background: rgba(56,189,248,0.1);
    transform: scale(1.01);
}

/* TITLE */
li strong {
    color: #38bdf8;
}

/* RESPONSIVE */
@media (min-width: 700px) {
    .grid {
        grid-template-columns: 1fr 1fr;
    }
}