@media (max-width: 700px) {
    .todo-simple {
        columns: 1;
    }
}

body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #0f172a;
    color: white;
}

header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

header img {
    width: clamp(120px, 25vw, 180px);
    height: clamp(120px, 25vw, 180px);
    border-radius: 50%;
    border: 5px solid white;
    object-fit: cover;
}

h1 {
    margin: 20px 0 10px;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.subtitle {
    opacity: 0.9;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.box {
    background: rgba(255,255,255,0.1);
    padding: 15px 20px;
    border-radius: 12px;
    min-width: 90px;
    max-width: 120px;
    flex: 1;
}

.number {
    font-size: 2rem;
    font-weight: bold;
}

section {
    padding: 20px 20px;
    max-width: 1000px;
    margin: auto;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.gallery img {
    width: 100%;
    border-radius: 10px;
    transition: transform 0.2s ease;
}

.gallery img:hover {
    transform: scale(1.05);
}

footer {
    text-align: center;
    padding: 30px;
    opacity: 0.7;
}

.todo-simple {
    list-style: none;
    padding: 0;
    margin: 20px 0;

    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px 15px;
}

.todo-simple li {
    background: rgba(255,255,255,0.08);
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 1rem;
    transition: 0.2s;
}

.todo-simple li:hover {
    background: rgba(255,255,255,0.12);
    transform: translateX(5px);
}