* {

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

:root {

    --background: #f5f7fb;
    --white: #ffffff;
    --text: #182230;
    --gray: #718096;
    --border: #e5e8ef;
    --purple: #5b5ce2;
    --purple-dark: #4546bd;
    --green: #2e9d68;
    --red: #e05252;
}

body {

    font-family: Arial, Helvetica, sans-serif;
    background: var(--background);
    color: var(--text);
    min-height: 100vh;
}


.app {
    
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 50px 0;
}


.header {

    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
}

.small-title {

    color: var(--purple);
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

h1 {

    font-size: 60px;
    letter-spacing: -2px;
}

h1 span {

    color: var(--purple);
}

.description {

    color: var(--gray);
    margin-top: 10px;
}


.progress {

    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px 25px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
}

.progress strong {

    display: block;
    color: var(--purple);
    font-size: 28px;
}

.progress span {

    color: var(--gray);
    font-size: 12px;
}


/* Karte */

.card {

    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
}

.card h2 {

    font-size: 20px;
}



.form-grid {

    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 15px;
    margin: 20px 0;
}

.input-group {

    display: flex;
    flex-direction: column;
    gap: 7px;
}

label {

    font-size: 13px;
    font-weight: bold;
}

input,
select {

    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fafbfe;
    color: var(--text);
    font-size: 14px;
}

input:focus,
select:focus {

    outline: none;
    border-color: var(--purple);
}

.add-button {

    background: var(--purple);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 12px 18px;
    font-weight: bold;
    cursor: pointer;
}

.add-button:hover {

    background: var(--purple-dark);
}

.tasks-section {

    margin-top: 35px;
}

.tasks-header {

    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.tasks-header h2 {

    font-size: 20px;
}

.tasks-header p {

    color: var(--gray);
    font-size: 13px;
    margin-top: 5px;
}

.filters {

    display: flex;
    gap: 5px;
    background: #e9ebf4;
    padding: 5px;
    border-radius: 10px;
}

.filter {

    border: none;
    background: transparent;
    padding: 8px 13px;
    border-radius: 8px;
    cursor: pointer;
    color: #596273;
    font-weight: bold;
}

.filter.active {

    background: white;
    color: var(--purple);
}


.task-list {

    display: flex;
    flex-direction: column;
    gap: 12px;
}

.task {

    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 15px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 17px;
    transition: 0.2s;
}

.task:hover {

    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(0, 0, 0, 0.06);
}


.check {

    width: 22px;
    height: 22px;
    border: 2px solid #cbd1dc;
    border-radius: 50%;
    background: white;
    cursor: pointer;
}

.task.done .check {

    background: var(--green);
    border-color: var(--green);
    position: relative;
}

.task.done .check::after {

    content: "✓";
    color: white;
    font-size: 13px;
    font-weight: bold;
    position: absolute;
    left: 3px;
    top: 0;
}


.task-title {

    font-weight: bold;
    margin-bottom: 7px;
}

.task.done .task-title {

    text-decoration: line-through;
    color: #9aa3b1;
}


.meta {

    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    color: var(--gray);
    font-size: 12px;
}

.subject {

    background: #eef0ff;
    color: var(--purple);
    padding: 4px 8px;
    border-radius: 6px;
    font-weight: bold;
}

.priority {

    padding: 4px 8px;
    border-radius: 6px;
    font-weight: bold;
}

.priority.hoch {

    background: #fff0f0;
    color: var(--red);
}

.priority.normal {

    background: #f0f3f8;
    color: #647084;
}

.priority.niedrig {

    background: #edf9f2;
    color: var(--green);
}


.delete-button {

    border: none;
    background: transparent;
    color: #a0a7b4;
    font-size: 22px;
    cursor: pointer;
}

.delete-button:hover {

    color: var(--red);
}

.empty {

    text-align: center;
    padding: 50px 20px;
    color: var(--gray);
}

.empty-icon {

    width: 55px;
    height: 55px;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #eaf8f0;
    color: var(--green);
    font-size: 25px;
    font-weight: bold;
}

.empty h3 {

    color: var(--text);
    margin-bottom: 5px;
}

footer {

    text-align: center;
    color: #9aa3b1;
    font-size: 12px;
    margin-top: 30px;
}


/* Responsive */

@media (max-width: 800px) {

    .header {

        align-items: flex-start;
    }

    .form-grid {

        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {

    .app {

        width: 92%;
        padding: 30px 0;
    }

    .header {

        flex-direction: column;
    }

    h1 {

        font-size: 45px;
    }

    .progress {

        width: 100%;
    }

    .form-grid {

        grid-template-columns: 1fr;
    }

    .tasks-header {

        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .task {

        grid-template-columns: auto 1fr auto;
    }
}