/* ===== CSS Variables ===== */
:root {
    --color-primary: #1a4a8a;
    --color-primary-dark: #0d2d54;
    --color-primary-light: #3a7bd5;
    --color-accent: #c73e1d;
    --color-accent-dark: #a02f12;
    --color-dark: #1a1a1a;
    --color-gray-900: #2d2d2d;
    --color-gray-700: #4a4a4a;
    --color-gray-500: #6b6b6b;
    --color-gray-300: #a0a0a0;
    --color-gray-100: #e8e8e8;
    --color-light: #f5f5f5;
    --color-white: #ffffff;
    
    --font-display: 'Oswald', sans-serif;
    --font-body: 'Source Sans 3', sans-serif;
    
    --container-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ===== Typography ===== */
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-dark);
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--color-accent);
    margin: 1rem auto 0;
}

.section-title--light {
    color: var(--color-white);
}

.section-title--light::after {
    background-color: var(--color-white);
}

/* ===== Header ===== */
.header {
    background-color: var(--color-white);
    border-bottom: 3px solid var(--color-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header__container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo__icon svg {
    width: 50px;
    height: 35px;
}

.logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.logo__subtitle {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-gray-700);
    letter-spacing: 0.1em;
}

.logo--light .logo__title,
.logo--light .logo__subtitle {
    color: var(--color-white);
}

.header__contacts {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.header__phone {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: color 0.2s ease;
}

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

.header__icon {
    width: 20px;
    height: 20px;
}

.header__schedule {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    padding-left: 1.5rem;
    border-left: 1px solid var(--color-gray-300);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 550px;
    display: flex;
    align-items: center;
    background: 
        linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 30px,
            rgba(255, 255, 255, 0.02) 30px,
            rgba(255, 255, 255, 0.02) 60px
        );
}

.hero__overlay {
    position: absolute;
    right: -100px;
    bottom: -100px;
    width: 500px;
    height: 500px;
    background: var(--color-accent);
    opacity: 0.1;
    transform: rotate(45deg);
}

.hero__container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 4rem 1.5rem;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero__content {
    max-width: 700px;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero__features {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.hero__feature {
    display: flex;
    flex-direction: column;
}

.hero__feature-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.hero__feature-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.25rem;
}

.hero__cta {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--color-accent);
    color: var(--color-white);
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.hero__cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.4s ease;
}

.hero__cta:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(199, 62, 29, 0.4);
}

.hero__cta:hover::before {
    left: 100%;
}

/* ===== Services Section ===== */
.services {
    padding: 5rem 1.5rem;
    background-color: var(--color-light);
}

.services__container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-100);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card__image {
    height: 180px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.service-card__image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.3));
}

.service-card__image--soft {
    background: linear-gradient(135deg, #3a5a40 0%, #588157 100%);
}

.service-card__image--metal {
    background: linear-gradient(135deg, #6c757d 0%, #adb5bd 100%);
}

.service-card__image--seam {
    background: linear-gradient(135deg, #b08968 0%, #ddb892 100%);
}

.service-card__content {
    padding: 1.5rem;
}

.service-card__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.service-card__price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.service-card__price:last-child {
    border-bottom: none;
}

.service-card__price-label {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.service-card__price-value {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ===== Advantages Section ===== */
.advantages {
    padding: 5rem 1.5rem;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 40px,
            rgba(0, 0, 0, 0.05) 40px,
            rgba(0, 0, 0, 0.05) 80px
        );
}

.advantages__container {
    max-width: var(--container-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.advantages__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.advantage:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.advantage__icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--color-white);
}

.advantage__icon svg {
    width: 100%;
    height: 100%;
}

.advantage__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.advantage__text {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

/* ===== Process Section ===== */
.process {
    padding: 5rem 1.5rem;
    background-color: var(--color-white);
}

.process__container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.process__timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    position: relative;
}

.process__step {
    position: relative;
    padding: 2rem;
    background-color: var(--color-light);
    border-left: 4px solid var(--color-primary);
    transition: all 0.3s ease;
}

.process__step:hover {
    background-color: var(--color-gray-100);
    border-left-color: var(--color-accent);
}

.process__number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 1rem;
    transition: opacity 0.3s ease;
}

.process__step:hover .process__number {
    opacity: 0.4;
    color: var(--color-accent);
}

.process__title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.process__text {
    font-size: 0.9375rem;
    color: var(--color-gray-700);
    line-height: 1.6;
}

.process__text a {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.process__text a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ===== CTA Section ===== */
.cta {
    padding: 5rem 1.5rem;
    background-color: var(--color-gray-900);
    position: relative;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: var(--color-accent);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.1;
}

.cta__container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.cta__title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.cta__subtitle {
    color: var(--color-gray-300);
    font-size: 1rem;
    line-height: 1.6;
}

.cta__form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cta__input {
    padding: 1rem 1.25rem;
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: var(--color-gray-700);
    border: 2px solid transparent;
    color: var(--color-white);
    transition: all 0.2s ease;
}

.cta__input::placeholder {
    color: var(--color-gray-300);
}

.cta__input:focus {
    outline: none;
    border-color: var(--color-primary-light);
    background-color: var(--color-dark);
}

.cta__button {
    padding: 1rem 2rem;
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: var(--color-accent);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.cta__button:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-dark);
    color: var(--color-gray-300);
}

.footer__container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 3rem 1.5rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
}

.footer__description {
    margin-top: 1rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    max-width: 300px;
}

.footer__heading {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.25rem;
}

.footer__link {
    display: block;
    color: var(--color-gray-300);
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    transition: color 0.2s ease;
}

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

.footer__address {
    font-size: 0.875rem;
    line-height: 1.6;
    margin-top: 1rem;
}

.footer__text {
    font-size: 0.9375rem;
    margin-bottom: 0.25rem;
}

.footer__bottom {
    border-top: 1px solid var(--color-gray-700);
    padding: 1.5rem;
    text-align: center;
}

.footer__copyright {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .cta__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header__schedule {
        display: none;
    }
    
    .hero__features {
        gap: 1.5rem;
    }
    
    .footer__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .header__container {
        flex-direction: column;
        height: auto;
        padding: 1rem;
        gap: 1rem;
    }
    
    .hero {
        min-height: 450px;
    }
    
    .hero__features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__title,
.hero__subtitle,
.hero__features,
.hero__cta {
    animation: fadeInUp 0.6s ease forwards;
}

.hero__subtitle {
    animation-delay: 0.1s;
}

.hero__features {
    animation-delay: 0.2s;
}

.hero__cta {
    animation-delay: 0.3s;
}