:root {
    --fitomodel-primary: #b5e82f;
    --fitomodel-primary-dark: #93ca14;
    --fitomodel-black: #090909;
    --fitomodel-card: #131313;
    --fitomodel-input: #1a1a1a;
    --fitomodel-border: #303030;
    --fitomodel-white: #ffffff;
    --fitomodel-muted: #a5a5a5;
    --fitomodel-danger: #ff6666;
    --fitomodel-warning: #ffbd59;
}

/* جلوگیری از اسکرول پس‌زمینه هنگام بازبودن Popup */
body.fitomodel-modal-open {
    overflow: hidden;
}

.fitomodel-calc {
    width: 100%;
    color: var(--fitomodel-white);
    font-family: inherit;
}

.fitomodel-calc *,
.fitomodel-calc *::before,
.fitomodel-calc *::after {
    box-sizing: border-box;
}

.fitomodel-calc__card {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 32px;
    background: var(--fitomodel-card);
    border: 1px solid var(--fitomodel-border);
    border-radius: 24px;
    box-shadow: 0 18px 55px rgba(0, 0, 0, 0.2);
}

.fitomodel-calc__title {
    margin: 0 0 28px;
    color: var(--fitomodel-white);
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 800;
    line-height: 1.5;
    text-align: center;
}

.fitomodel-calc__form {
    width: 100%;
}

.fitomodel-calc__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.fitomodel-calc__field {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.fitomodel-calc__field--full {
    grid-column: 1 / -1;
}

.fitomodel-calc__field label {
    color: var(--fitomodel-white);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.5;
}

.fitomodel-calc__field input,
.fitomodel-calc__field select {
    width: 100%;
    min-width: 0;
    height: 52px;
    padding: 0 15px;
    background: var(--fitomodel-input);
    border: 1px solid var(--fitomodel-border);
    border-radius: 12px;
    outline: none;
    color: var(--fitomodel-white);
    font-family: inherit;
    font-size: 15px;
    line-height: 1.2;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.fitomodel-calc__field input {
    direction: ltr;
    text-align: right;
}

.fitomodel-calc__field select {
    cursor: pointer;
    direction: rtl;
}

.fitomodel-calc__field select option {
    background: #1a1a1a;
    color: #ffffff;
}

.fitomodel-calc__field input::placeholder {
    color: #858585;
    opacity: 1;
}

.fitomodel-calc__field input:focus,
.fitomodel-calc__field select:focus {
    border-color: var(--fitomodel-primary);
    box-shadow: 0 0 0 3px rgba(181, 232, 47, 0.15);
}

.fitomodel-calc__error {
    display: none;
    margin: 16px 0 0;
    padding: 11px 14px;
    background: rgba(255, 102, 102, 0.1);
    border: 1px solid rgba(255, 102, 102, 0.45);
    border-radius: 10px;
    color: #ff9d9d;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.7;
    text-align: right;
}

.fitomodel-calc__error.is-visible {
    display: block;
}

.fitomodel-calc__button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 54px;
    margin-top: 24px;
    padding: 12px 20px;
    background: var(--fitomodel-primary);
    border: 1px solid var(--fitomodel-primary);
    border-radius: 12px;
    color: #111111;
    cursor: pointer;
    font-family: inherit;
    font-size: 16px;
    font-weight: 800;
    line-height: 1.4;
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.fitomodel-calc__button:hover {
    background: var(--fitomodel-primary-dark);
    border-color: var(--fitomodel-primary-dark);
    box-shadow: 0 10px 24px rgba(181, 232, 47, 0.2);
    transform: translateY(-2px);
}

.fitomodel-calc__button:active {
    transform: translateY(0);
}

/* Modal */
.fitomodel-modal {
    position: fixed;
    z-index: 999999;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.fitomodel-modal.is-open {
    display: flex;
}

.fitomodel-modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.fitomodel-modal__content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 560px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    padding: 34px;
    background: #121212;
    border: 1px solid #3a3a3a;
    border-radius: 24px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
    animation: fitomodel-modal-enter 0.25s ease both;
}

@keyframes fitomodel-modal-enter {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.fitomodel-modal__close {
    position: absolute;
    top: 13px;
    left: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: #242424;
    border: 1px solid #3d3d3d;
    border-radius: 50%;
    color: #ffffff;
    cursor: pointer;
    font-size: 27px;
    line-height: 1;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.fitomodel-modal__close:hover {
    background: var(--fitomodel-primary);
    color: #111111;
}

.fitomodel-modal__close span {
    display: block;
    margin-top: -3px;
}

.fitomodel-modal__title {
    margin: 0 0 24px;
    padding-left: 40px;
    color: #ffffff;
    font-size: clamp(21px, 4vw, 28px);
    font-weight: 800;
    line-height: 1.5;
    text-align: right;
}

.fitomodel-modal__results {
    display: grid;
    grid-template-columns: 1fr;
    gap: 13px;
}

.fitomodel-result {
    padding: 17px;
    background: #1b1b1b;
    border: 1px solid #343434;
    border-radius: 16px;
    text-align: right;
}

.fitomodel-result--primary {
    background: rgba(181, 232, 47, 0.08);
    border-color: rgba(181, 232, 47, 0.55);
}

.fitomodel-result--success {
    border-color: rgba(181, 232, 47, 0.55);
}

.fitomodel-result--warning {
    border-color: rgba(255, 189, 89, 0.6);
}

.fitomodel-result--danger {
    border-color: rgba(255, 102, 102, 0.6);
}

.fitomodel-result__label,
.fitomodel-result__status,
.fitomodel-result__unit,
.fitomodel-result__description {
    display: block;
}

.fitomodel-result__label {
    color: #c7c7c7;
    font-size: 14px;
    font-weight: 600;
}

.fitomodel-result__value {
    display: inline-block;
    margin: 7px 0 2px;
    color: var(--fitomodel-primary);
    font-size: clamp(26px, 5vw, 35px);
    font-weight: 900;
    line-height: 1.15;
}

.fitomodel-result__status {
    margin-top: 3px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 800;
}

.fitomodel-result__unit {
    color: #b5b5b5;
    font-size: 13px;
    font-weight: 600;
}

.fitomodel-result__description {
    margin-top: 9px;
    color: #bdbdbd;
    font-size: 13px;
    line-height: 1.8;
}

.fitomodel-modal__close-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 50px;
    margin-top: 20px;
    padding: 10px 18px;
    background: transparent;
    border: 1px solid var(--fitomodel-primary);
    border-radius: 12px;
    color: var(--fitomodel-primary);
    cursor: pointer;
    font-family: inherit;
    font-size: 15px;
    font-weight: 800;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.fitomodel-modal__close-button:hover {
    background: var(--fitomodel-primary);
    color: #111111;
}

/* تبلت و موبایل */
@media (max-width: 767px) {
    .fitomodel-calc__card {
        padding: 22px 16px;
        border-radius: 18px;
    }

    .fitomodel-calc__title {
        margin-bottom: 22px;
        font-size: 23px;
    }

    .fitomodel-calc__grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .fitomodel-calc__field--full {
        grid-column: auto;
    }

    .fitomodel-calc__field input,
    .fitomodel-calc__field select {
        height: 50px;
        font-size: 16px;
    }

    .fitomodel-calc__button {
        min-height: 52px;
        margin-top: 20px;
    }

    .fitomodel-modal {
        align-items: flex-end;
        padding: 0;
    }

    .fitomodel-modal__content {
        max-width: none;
        max-height: 88vh;
        padding: 27px 17px 20px;
        border-right: 0;
        border-bottom: 0;
        border-left: 0;
        border-radius: 22px 22px 0 0;
    }

    .fitomodel-modal__title {
        margin-bottom: 20px;
        font-size: 22px;
    }

    .fitomodel-result {
        padding: 15px;
        border-radius: 13px;
    }
}

@media (max-width: 374px) {
    .fitomodel-calc__card {
        padding: 18px 13px;
    }

    .fitomodel-calc__title {
        font-size: 21px;
    }

    .fitomodel-calc__field label {
        font-size: 13px;
    }
}