/* ==========================================================================
   1. Обнулення та базові стилі (Reset & Base)
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: #0B0B0B;
    color: #FFFFFF;
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Контейнер для вирівнювання сітки */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   2. Шапка сайту (Header)
   ========================================================================== */
.header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 25px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 24px;
    letter-spacing: 2px;
}

    .logo span {
        color: #FFB800; /* Акцентне преміальне золото */
    }

.nav {
    display: flex;
    gap: 40px;
}

.nav__link {
    color: #AAAAAA;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

    .nav__link:hover {
        color: #FFB800; /* Підсвічування золотом при наведенні */
        transform: translateY(-1px);
    }

/* ==========================================================================
   3. Кнопки (Buttons)
   ========================================================================== */
.btn {
    display: inline-block;
    text-decoration: none;
    padding: 15px 35px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn--primary {
    background-color: #FFB800;
    color: #000000;
    border: 2px solid #FFB800;
}

    .btn--primary:hover {
        background-color: transparent;
        color: #FFB800;
        transform: translateY(-3px);
        box-shadow: 0 10px 20px rgba(255, 184, 0, 0.2); /* Преміальне світіння */
    }

.btn--outline {
    border: 2px solid #FFFFFF;
    color: #FFFFFF;
    background-color: transparent;
    padding: 13px 30px;
}

    .btn--outline:hover {
        background-color: #FFFFFF;
        color: #000000;
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(255, 255, 255, 0.1);
    }

.btn--text {
    color: #FFFFFF;
    padding: 15px 20px;
}

    .btn--text:hover {
        color: #FFB800;
    }

/* ==========================================================================
   4. Головний екран (Hero Section)
   ========================================================================== */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(to bottom, rgba(11, 11, 11, 0.8) 0%, rgba(11, 11, 11, 0.4) 50%, #0B0B0B 100%), url('hero-bg.jpg') center/cover no-repeat;
}

.hero__content {
    max-width: 650px;
}

.hero__subtitle {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: #FFB800;
    margin-bottom: 15px;
    display: inline-block;
}

.hero__title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 25px;
}

    .hero__title span {
        color: rgba(255, 255, 255, 0.7);
        font-weight: 300;
    }

.hero__text {
    color: #BBBBBB;
    font-size: 16px;
    margin-bottom: 40px;
}

.hero__actions {
    display: flex;
    align-items: center;
    gap: 25px;
}

/* ==========================================================================
   5. Секція Послуг (Services Section)
   ========================================================================== */
.services {
    padding: 100px 0;
    background-color: #0B0B0B;
}

.services__header {
    text-align: center;
    margin-bottom: 60px;
}

.services__subtitle {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: #FFB800;
    margin-bottom: 10px;
    display: block;
}

.services__title {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: 1px;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: #141414;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    padding: 40px 30px;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
}

    .service-card:hover {
        transform: translateY(-5px);
        border-color: rgba(255, 184, 0, 0.3);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

.service-card__title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #FFFFFF;
}

.service-card__text {
    color: #888888;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.service-card__price {
    font-size: 16px;
    font-weight: 700;
    color: #FFB800;
    display: block;
}

/* ==========================================================================
   6. Інтерактивний калькулятор та Форма
   ========================================================================== */
.calculator {
    padding: 100px 0;
    background-color: #0F0F0F;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
}

.calculator__inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 50px;
    align-items: start;
}

.calculator__box, .calculator__form-box {
    background: #141414;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    padding: 40px;
}

.calc-title, .form-title {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.calc-text {
    color: #888888;
    font-size: 14px;
    margin-bottom: 30px;
}

.calc-group {
    margin-bottom: 25px;
}

.calc-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #AAAAAA;
    margin-bottom: 12px;
}

.calc-select {
    width: 100%;
    background: #0B0B0B;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
    padding: 15px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
    outline: none;
    cursor: pointer;
}

.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 14px;
    color: #DDDDDD;
    cursor: pointer;
    user-select: none;
}

    .checkbox-item input {
        display: none; /* Скрываем дефолтный чекбокс */
    }

/* Кастомный премиальный чекбокс */
.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    display: inline-block;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-item input:checked + .checkbox-custom {
    border-color: #FFB800;
    background: #FFB800;
}

    .checkbox-item input:checked + .checkbox-custom::after {
        content: '';
        position: absolute;
        left: 6px;
        top: 2px;
        width: 5px;
        height: 10px;
        border: solid #000000;
        border-width: 0 2px 2px 0;
        transform: rotate(45deg);
    }

.calc-total {
    margin-top: 40px;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

    .calc-total span {
        font-size: 16px;
        font-weight: 600;
        color: #AAAAAA;
    }

.price-value {
    font-size: 28px;
    font-weight: 800;
    color: #FFB800;
}

/* Стили формы */
.form-input {
    width: 100%;
    background: #0B0B0B;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
    padding: 15px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
    margin-bottom: 20px;
    outline: none;
}

    .form-input:focus {
        border-color: #FFB800;
    }

.btn--block {
    width: 100%;
    text-align: center;
}

/* ==========================================================================
   7. Адаптивність під мобільні пристрої (Mobile Responsive)
   ========================================================================== */
@media (max-width: 992px) {
    .calculator__inner {
        grid-template-columns: 1fr; /* Переводим калькулятор в одну колонку */
        gap: 30px;
    }

    .nav {
        display: none; /* Скрываем десктопное меню (для полноценного мобильного нужен бургер) */
    }
}

@media (max-width: 768px) {
    .hero__title {
        font-size: 32px; /* Уменьшаем шрифт заголовка на смартфонах */
    }

    .hero__actions {
        flex-direction: column; /* Кнопки встают друг под друга */
        align-items: stretch;
    }

    .btn {
        text-align: center;
    }

    .services__title {
        font-size: 28px;
    }

    .calculator__box, .calculator__form-box {
        padding: 25px 20px; /* Меньше отступы по бокам */
    }

    .price-value {
        font-size: 22px;
    }
}