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

body {
    min-height: 100vh;
    background:
        linear-gradient(135deg, #0f172a, #1e293b, #334155);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 20px;
    color: white;
}

.container {
    width: 100%;
    max-width: 850px;

    background: rgba(255, 255, 255, 0.08);

    backdrop-filter: blur(18px);

    border: 1px solid rgba(255, 255, 255, 0.1);

    border-radius: 24px;

    padding: 35px;

    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.4);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.title {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(to right, #60a5fa, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.task-count {
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 18px;
    border-radius: 14px;
    font-size: 14px;
}

.todo-form {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 35px;
}

.todo-form input[type="text"] {
    flex: 1;
    min-width: 250px;
    padding: 16px;
    border: none;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.08);
    color: white;
    font-size: 15px;
    outline: none;
}

.todo-form input[type="text"]::placeholder {
    color: #cbd5e1;
}

.file-upload {
    position: relative;
    overflow: hidden;
}

.file-upload input {
    display: none;
}

.file-upload label {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.08);
    padding: 15px 18px;
    border-radius: 14px;
    cursor: pointer;
    transition: 0.3s;
    color: #e2e8f0;
}

.file-upload label:hover {
    background: rgba(255, 255, 255, 0.15);
}

.todo-form button {
    border: none;
    padding: 16px 24px;
    border-radius: 14px;
    background: linear-gradient(to right, #3b82f6, #06b6d4);
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.todo-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.todo-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.todo-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    overflow: hidden;
    transition: 0.3s;
}

.todo-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.todo-content {
    display: flex;
    gap: 20px;
    padding: 20px;
    flex-wrap: wrap;
}

.todo-image img {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 16px;
}

.task-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
}

.task-number {
    color: #38bdf8;
    font-size: 14px;
    font-weight: 600;
}

.task-name {
    font-size: 22px;
    font-weight: 600;
    color: white;
    line-height: 1.4;
}

.task-time {
    font-size: 14px;
    color: #cbd5e1;
}

.action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.btn {
    text-decoration: none;
    padding: 12px 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.update-btn {
    background: #0ea5e9;
    color: white;
}

.update-btn:hover {
    background: #0284c7;
}

.delete-btn {
    background: #ef4444;
    color: white;
}

.delete-btn:hover {
    background: #dc2626;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #cbd5e1;
}

.empty-state i {
    font-size: 60px;
    margin-bottom: 20px;
    color: #38bdf8;
}

.empty-state h2 {
    margin-bottom: 10px;
}

@media(max-width:768px) {

    .container {
        padding: 20px;
    }

    .todo-content {
        flex-direction: column;
    }

    .todo-image img {
        width: 100%;
        height: 220px;
    }

    .title {
        font-size: 26px;
    }

    .todo-form {
        flex-direction: column;
    }

    .todo-form button {
        width: 100%;
    }
}