/* :root {
    --green: #73ba3c;
    --hoverGreen: #528728;
    --orange: #F99415;
    --red: #e75a5a;
    --text: #fff;
    --border: 1px solid rgba(151, 158, 162, 0.3);
    --radius: 6px;
    --border-color: rgba(151, 158, 162, 0.3);
} */

:root {
    --bg-main: #0f172a;        /* темний синьо-графіт */
    --bg-card: #111827;        /* карточки */
    --bg-modal: #020617;       /* модалки / форма */

    --blue: #38bdf8;           /* блакитний */
    --turquoise: #2dd4bf;      /* бірюзовий */
    --green: #22c55e;

    --text-main: #e5e7eb;
    --text-muted: #94a3b8;

    --border-color: rgba(148, 163, 184, 0.25);
    --radius: 10px;
}

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

/* body {
    font-family: 'Roboto', sans-serif;
    background: #fff;
} */

body {
    background: radial-gradient(
        circle at top,
        #020617 0%,
        #020617 40%,
        #0f172a 100%
    );
    color: var(--text-main);
}

.container {
    max-width: 950px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.heading {
    margin-bottom: 1rem;
    text-align: center;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -1rem;
    margin-bottom: 40px;
}

.row .card {
    flex: 1 1 calc(33.333% - 1rem);
    max-width: calc(33.333% - 1rem);
    min-width: 220px;
    margin-bottom: 1rem;
    margin-right: 1rem;
}

/* ===  CARD === */

.card {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    transition: .4s box-shadow;
    background: #fff;
    border-radius: var(--radius);
    border: var(--border);

    cursor: grab;
    transition: background-color 250ms linear;

    background: linear-gradient(
        145deg,
        #020617,
        #020617
    );
    border: 1px solid var(--border-color);
    color: var(--text-main);

}

.card h3 {
    color: var(--blue);
    font-weight: 500;
}

.card:hover.done h3 {
    color: var(--bg-main);
}

.card.dragging {
    opacity: 0.5;
}

/* .card.done {
    background: var(--green);
    color: var(--text); 
    
} */

.card.done {
    background: linear-gradient(
        145deg,
        rgba(45, 212, 191, 0.15),
        rgba(15, 23, 42, 1)
    );
    border-color: var(--turquoise);
}

.card:hover.done {
    background: var(--turquoise);
}

/* .card:hover {
    background: var(--hoverGreen);
    cursor: pointer;
    box-shadow: 4px 4px 8px rgba(0,0,0,.22);

    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.25),
                0 10px 30px rgba(0, 0, 0, 0.6);
} */

.card:hover {
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.25),
                0 10px 30px rgba(0, 0, 0, 0.6);
}

/* ==PROGRESS === */

.progress {
    margin: 0 auto 1rem;
}

.progess-bar {
    position: relative;
    left: 0;
    right: 0;
    height: 30px;
    /* border: var(--border); */
    border-radius: var(--radius);

    background: #020617;
    border: 1px solid var(--border-color);
}

.prodress-value {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    /* background: #000; */
    /* color: var(--text); */
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius);
    transition: .5s width;


    background: linear-gradient(
        90deg,
        var(--blue),
        var(--turquoise)
    );
    color: #020617;
    font-weight: 600;
}
/* === MODAL === */

.modal {
    display: none;
}

.modal.open {
    display: block;
    position: fixed;
    top: 50px;
    transform: translateX(-50%);
    left: 50%;
    width: 500px;
    /* background: #fff; */
    z-index: 200;
    padding: 1.5rem;
    border-radius: var(--radius);


    background: linear-gradient(
        180deg,
        #020617,
        #020617
    );
    color: var(--text-main);
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 60px rgba(0,0,0,0.8);
}

.modal h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.modal p {
    margin-bottom: 1rem;
}

.modal hr {
    margin-bottom: 1rem;
    border: none;
    height: 2px;
    background-color: var(--border-color);
}

.modal.open + .modal-backdrop {
    display: block;
}

.modal-backdrop.open {
    display: block;
}

.modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    /* background: rgba(0, 0, 0, .5); */
    z-index: 100;

    background: radial-gradient(
        circle,
        rgba(2, 6, 23, 0.6),
        rgba(2, 6, 23, 0.85)
    );
    backdrop-filter: blur(2px);
}


/* === FORM === */

.empty {
    margin-bottom: 2rem;
    color: green;
}


.form {
    display: none;
}

.form.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 50%;
    top: 100px;
    /* background: #fff; */
    border-radius: var(--radius);
    /* border: var(--border); */
    padding: 1.5rem;
    width: 600px;
    transform: translateX(-50%);
    z-index: 200;
    /* box-shadow: 4px 4px 8px rgba(0,0,0,.22); */


    background: linear-gradient(
        180deg,
        #020617,
        #020617
    );
    color: var(--text-main);
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 60px rgba(0,0,0,0.8); 
}

.form.open + .modal-backdrop {
    display: block;
}

.form-control label {
    color: var(--text-muted);
    font-size: 14px;
    display: block;
    margin-bottom: .5rem;
}

.form-control input, 
.form-control textarea {
    display: block;
    width: 100%;
    /* border: var(--border); */
    resize: none;
    padding: .75rem;
    margin-bottom: 1rem;
    border-radius: var(--radius);
    /* background: #f7f7f7; */
    font-family: inherit;
    transition: .22s background;
    outline: none;


    background: #020617;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.form-control:hover input, 
.form-control:hover textarea {
    border-color: #73BA3C;
    transform: 3s ease;
}

.form-control input:focus, 
.form-control textarea:focus {

    border-color: var(--blue);
    box-shadow: 0 0 0 1px rgba(56,189,248,.4);
    /* background: #fff; */
}

.form-control input.invalid, 
.form-control textarea.invalid {
    animation: validate 2s;
}

@keyframes validate {
    0% {
        border: 1px solid var(--red);
    }

    50% {
        border: 1px solid var(--red);
    }

    100% {
        border: var(--border);
    }
}

/* === BTN === */

.heading_btn {
    display: block;
    margin: 0 auto;
    font-size: 26px;
    font-family: inherit;
    padding: .7rem 2rem;
    /* color: #fff; */
    /* border: 1px solid #ccc; */
    /* background: #4D5AE5; */
    border-radius: var(--radius);
    width: 50%;
    height: 60px;
    transition: background-color 250ms linear;

    background: linear-gradient(
        135deg,
        var(--blue),
        var(--turquoise)
    );
    color: #020617;
    font-weight: 600;
    border: none;
}

.btn { 
    font-family: inherit;
    padding: .7rem 2rem;
    /* border: 1px solid #ccc; */
    /* color: var(--text); */
    /* background: #4D5AE5; */
    border-radius: var(--radius);
    transition: background-color 250ms linear;
    text-align: center;


    background: linear-gradient(
        135deg,
        var(--blue),
        var(--turquoise)
    );
    color: #020617;
    font-weight: 600;
    border: none;
}

.btn:focus,
.heading_btn:focus {
    outline: none;
    background: #404bbf;
    color: var(--text);
}

.btn:hover,
.heading_btn:hover {
    border-color: var(--text);
    background: #404bbf;
    color: var(--text);
    cursor: pointer;

    filter: brightness(1.1);
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.4);
}

/* === Responsive rules === */
@media (max-width: 900px) {
    .container {
        padding: 1.5rem;
        max-width: 720px;
    }

    .row .card {
        flex: 1 1 calc(50% - 1rem);
        max-width: calc(50% - 1rem);
    }

    .modal.open,
    .form.open {
        width: 90%;
        max-width: 640px;
        left: 50%;
        transform: translateX(-50%);
        top: 60px;
        padding: 1rem;
    }

    .heading_btn {
        width: 70%;
        font-size: 20px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }

    .row {
        margin-right: 0;
    }

    .row .card {
        flex: 1 1 100%;
        max-width: 100%;
        margin-right: 0;
        margin-bottom: .75rem;
    }

    .card {
        padding: 1rem;
    }

    .heading {
        font-size: 1.05rem;
    }

    .heading_btn {
        width: 100%;
        font-size: 18px;
        height: auto;
        padding: .75rem 1rem;
    }

    .progess-bar {
        height: 20px;
    }

    .prodress-value {
        font-size: 0.9rem;
    }

    .modal.open,
    .form.open {
        width: calc(100% - 2rem);
        left: 50%;
        transform: translateX(-50%);
        top: 30px;
        padding: 0.9rem;
        max-width: 480px;
    }
}