/* =========================================
   1. Variables & Theme
   ========================================= */
:root {
    /* Colors */
    --color-primary: #0F172A;
    /* Deep Blue */
    --color-primary-light: #1E293B;
    --color-accent: #F59E0B;
    /* Electric Amber */
    --color-accent-hover: #D97706;
    --color-bg: #FFFFFF;
    /* Clean White */
    --color-bg-secondary: #F8FAFC;
    /* Light Grayish Blue */
    --color-text: #475569;
    /* Slate */
    --color-text-heading: #1E293B;
    /* Dark Slate */
    --color-text-light: #94A3B8;
    --color-white: #FFFFFF;
    --color-error: #E11D48;
    --color-success: #10B981;
    --color-border: #E2E8F0;

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Manrope', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.5;
    --line-height-heading: 1.2;

    /* Spacing */
    --spacing-xs: 0.25rem;
    /* 4px */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 1rem;
    /* 16px */
    --spacing-lg: 1.5rem;
    /* 24px */
    --spacing-xl: 2rem;
    /* 32px */
    --spacing-2xl: 3rem;
    /* 48px */
    --spacing-3xl: 4rem;
    /* 64px */

    /* Layout */
    --container-width: 1200px;
    --header-height: 70px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   2. Reset & Base Styles
   ========================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 100%;
}

body {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

button,
input,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* =========================================
   3. Typography
   ========================================= */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--color-text-heading);
    line-height: var(--line-height-heading);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2rem;
    /* Mobile */
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
}

/* =========================================
   4. Layout & Utilities
   ========================================= */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section__title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section__title--left {
    text-align: left;
}

.section__subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    margin-top: calc(var(--spacing-lg) * -0.5);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* =========================================
   5. Components
   ========================================= */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
    min-height: 48px;
    /* Touch target size */
}

.btn--primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn--primary:hover,
.btn--primary:focus {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn--outline:hover,
.btn--outline:focus {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn--lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn--full {
    width: 100%;
}

/* Forms */
.form__group {
    margin-bottom: var(--spacing-md);
}

.form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text-heading);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    transition: var(--transition);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

.form__error {
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: block;
    min-height: 1.25em;
}

.form__input[aria-invalid="true"] {
    border-color: var(--color-error);
}

.form__policy {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
    text-align: center;
}

.form__policy a {
    text-decoration: underline;
}

/* Cards */
.service-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
    height: 100%;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.service-card__icon-wrapper {
    width: 48px;
    height: 48px;
    background-color: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.service-card__icon {
    color: var(--color-accent);
    font-size: 24px;
}

.service-card__title {
    margin-bottom: var(--spacing-sm);
}

.service-card__text {
    color: var(--color-text);
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* =========================================
   6. Header & Navigation
   ========================================= */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.logo__icon {
    color: var(--color-accent);
}

.logo__image {
    height: 40px;
    width: auto;
}

/* Mobile Nav */
.nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-white);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    padding: var(--spacing-xl);
    display: none;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 999;
}

.nav.is-open {
    display: flex;
    transform: translateX(0);
}

.nav__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
    width: 100%;
}

.nav__link {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    display: block;
    padding: var(--spacing-sm);
}

.nav__link:hover {
    color: var(--color-accent);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header__phone {
    display: none;
    /* Hidden on mobile by default, shown via icon maybe? */
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    color: var(--color-primary);
}

.header__phone-mobile {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    transition: var(--transition);
    flex-shrink: 0;
    font-weight: 600;
    padding: var(--spacing-xs);
}

.header__phone-mobile:hover,
.header__phone-mobile:focus {
    color: var(--color-accent);
}

.header__phone-mobile .material-icons {
    font-size: 20px;
    flex-shrink: 0;
}

.header__phone-mobile-text {
    font-size: 0.875rem;
    white-space: nowrap;
}

.header__btn {
    display: none;
    /* Hidden on mobile */
}

/* Burger Menu */
.burger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 0;
}

.burger__line {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.burger.is-active .burger__line:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.burger.is-active .burger__line:nth-child(2) {
    opacity: 0;
}

.burger.is-active .burger__line:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* =========================================
   7. Sections
   ========================================= */
/* Hero */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(to bottom, var(--color-bg-secondary), var(--color-white));
    overflow: hidden;
}

.hero__container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.hero__title {
    font-size: 2rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.hero__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.hero__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.hero__icon {
    color: var(--color-success);
}

.hero__buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.hero__image-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* Services */
.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

/* About */
.about {
    background-color: var(--color-bg-secondary);
}

.about__container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.about__image-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-item {
    text-align: center;
}

.stat-item__number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-accent);
}

.stat-item__label {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Prices */
.prices__table-wrapper {
    overflow-x: hidden;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.prices__table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.prices__table th,
.prices__table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.prices__table th:first-child,
.prices__table td:first-child {
    width: 60%;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
}

.prices__table th:last-child,
.prices__table td:last-child {
    width: 40%;
}

.prices__table th {
    background-color: var(--color-bg-secondary);
    font-weight: 600;
}

.prices__value {
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
}

.prices__note {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-align: center;
}

/* Reviews */
.reviews {
    background-color: var(--color-bg-secondary);
}

.reviews__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.review-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin: 0;
}

.review-card__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.review-card__avatar {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.review-card__info {
    display: flex;
    flex-direction: column;
}

.review-card__author {
    font-weight: 700;
    font-style: normal;
    color: var(--color-text-heading);
}

.review-card__location {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.review-card__rating {
    color: #FBBF24;
    /* Star color */
    margin-top: var(--spacing-md);
}

/* FAQ */
.faq__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
}

.faq__question {
    padding: var(--spacing-md);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__icon {
    transition: transform 0.3s;
    color: var(--color-primary);
}

.faq__item[open] .faq__icon {
    transform: rotate(180deg);
}

.faq__answer {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-text);
    border-top: 1px solid var(--color-border);
}

/* Contacts */
.contacts__container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contacts__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contacts__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.125rem;
}

.contacts__icon {
    color: var(--color-accent);
    background: rgba(245, 158, 11, 0.1);
    padding: 8px;
    border-radius: 50%;
}

.contacts__socials {
    display: flex;
    gap: var(--spacing-md);
}

.social-link img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: var(--transition);
}

.social-link:hover img {
    transform: scale(1.1);
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
    font-size: 0.875rem;
}

.footer__container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
}

.footer__link {
    text-decoration: underline;
}

.footer__link:hover {
    color: var(--color-white);
}

/* =========================================
   8. Modal
   ========================================= */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.is-open {
    opacity: 1;
    visibility: visible;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    z-index: 2001;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.modal.is-open .modal__content {
    transform: translateY(0);
}

.modal__close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-light);
    transition: var(--transition);
}

.modal__close:hover {
    color: var(--color-primary);
}

.modal__title {
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.modal__subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* =========================================
   9. Media Queries (Desktop)
   ========================================= */
@media screen and (min-width: 768px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 5rem;
    }

    h1 {
        font-size: 3.5rem;
    }

    h2 {
        font-size: 2.5rem;
    }

    /* Header */
    .burger {
        display: none;
    }

    .nav {
        position: static;
        height: auto;
        width: auto;
        background: transparent;
        transform: none;
        padding: 0;
        display: block;
    }

    .nav__list {
        flex-direction: row;
        gap: var(--spacing-md);
    }

    .nav__link {
        font-size: 1rem;
        padding: 0;
    }

    .header__phone-mobile {
        display: none;
    }

    .header__phone {
        display: flex;
    }

    .header__btn {
        display: inline-flex;
    }

    /* Hero */
    .hero__container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .hero__content {
        flex: 1;
        max-width: 600px;
    }

    .hero__image-wrapper {
        flex: 1;
        max-width: 500px;
    }

    .hero__features {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }

    .hero__buttons {
        flex-direction: row;
    }

    /* Services */
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    /* About */
    .about__container {
        flex-direction: row;
        align-items: center;
    }

    .about__image-wrapper {
        flex: 1;
    }

    .about__content {
        flex: 1;
    }

    /* Reviews */
    .reviews__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Contacts */
    .contacts__container {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }

    .contacts__info {
        flex: 1;
        max-width: 400px;
    }

    .contacts__form {
        flex: 1;
        max-width: 500px;
        background: var(--color-white);
        padding: var(--spacing-xl);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        border: 1px solid var(--color-border);
    }

    /* Footer */
    .footer__container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

@media screen and (min-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}