:root {
    --color-primary: #003964;
    --color-accent: #00AEEF;
    --color-light: #F4F7F9;
    --color-dark: #333333;
    --color-muted: #6B7280;
    --max-width: 1200px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-card: 0 12px 24px rgba(0, 33, 63, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background-color: var(--color-light);
    color: var(--color-dark);
    line-height: 1.6;
}

a {
    color: inherit;
}

a:hover {
    color: var(--color-accent);
}

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

.layout {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.site-logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.08em;
    text-decoration: none;
    color: #ffffff;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.nav-link {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--color-accent);
}

.quote-link {
    background: var(--color-accent);
    color: #ffffff;
    text-decoration: none;
    padding: 0.65rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.2s ease;
}

.quote-link:hover,
.quote-link:focus {
    background: #0090cf;
}

.quote-counter {
    background: rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    padding: 0.1rem 0.55rem;
    font-size: 0.85rem;
}

.section {
    padding: 4rem 0;
}

.section--compact {
    padding: 2.5rem 0;
}

.section--light {
    background: #ffffff;
}

.section--primary {
    background: var(--color-primary);
    color: #ffffff;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 2.25rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin: 0 0 2.5rem;
    text-align: center;
    color: inherit;
}

.section--primary .section-title {
    color: #ffffff;
}

.hero {
    position: relative;
    background: linear-gradient(135deg, rgba(0, 57, 100, 0.82), rgba(0, 174, 239, 0.75));
    color: #ffffff;
    padding: 6rem 0;
    overflow: hidden;
}

.hero__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.hero__title {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 2.75rem;
    letter-spacing: 0.06em;
    margin: 0;
    text-transform: uppercase;
}

.hero__subtitle {
    font-size: 2.25rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0;
}

.hero__description {
    max-width: 640px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.9);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button--primary {
    background: var(--color-accent);
    color: #ffffff;
    box-shadow: var(--shadow-soft);
}

.button--primary:hover,
.button--primary:focus {
    background: #0090cf;
    transform: translateY(-1px);
}

.button--secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.button--secondary:hover,
.button--secondary:focus {
    background: #ffffff;
    color: var(--color-primary);
}

.trust-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.5rem;
    text-align: center;
}

.trust-item {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    font-weight: 600;
    color: var(--color-muted);
    box-shadow: var(--shadow-soft);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.feature-card__image {
    height: 240px;
    width: 100%;
    object-fit: cover;
}

.feature-card__body {
    padding: 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-card__title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    color: var(--color-primary);
    margin: 0;
}

.feature-card__text {
    color: var(--color-muted);
    margin: 0;
}

.cta-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-card);
    max-width: 600px;
    margin: 2rem auto 0;
}

.cta-form {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
}

.cta-form--compact {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-label {
    font-weight: 600;
    color: var(--color-dark);
}

.form-input,
.form-textarea,
.form-select {
    border: 1px solid #d6d9de;
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 174, 239, 0.2);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.catalog-header {
    text-align: center;
    margin-bottom: 3rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.product-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(0, 33, 63, 0.12);
}

.product-card__media img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.product-card__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.product-card__sku {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.product-card__name {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
}

.product-card__description {
    font-size: 0.95rem;
    color: var(--color-muted);
    flex: 1;
}

.product-card__cta {
    margin-top: 1rem;
}

/* Doors catalog layout */
.doors-layout {
    display: grid;
    gap: 2rem;
}

@media (min-width: 992px) {
    .doors-layout {
        grid-template-columns: 280px 1fr;
        align-items: start;
    }
}

.doors-filters {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 1.75rem 1.5rem;
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 6rem;
}

.doors-filters__title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 1.5rem;
    color: var(--color-primary);
}

.doors-filters__group {
    margin-bottom: 1.5rem;
}

.doors-filters__group h3 {
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 0.75rem;
    color: var(--color-muted);
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.filter-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.button--full {
    width: 100%;
    justify-content: center;
}

.doors-results__count {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-muted);
}

.doors-empty {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    text-align: center;
    color: var(--color-muted);
}

.product-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-muted);
}

.product-card__colors {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.product-card__color-list {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.color-chip {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.08);
    display: inline-block;
}

.color-chip[style=""] {
    background: linear-gradient(135deg, #f3f4f6 25%, #d1d5db 75%);
}

.quote-layout {
    display: grid;
    gap: 2rem;
}

@media (min-width: 960px) {
    .quote-layout {
        grid-template-columns: 2fr 1fr;
    }
}

.quote-card {
    background: #ffffff;
    padding: 1rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    box-shadow: var(--shadow-soft);
}

.quote-card__info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quote-card__details p {
    margin: 0;
}

.quote-card__details .sku {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.quote-remove {
    background: transparent;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
}

.quote-remove:hover {
    color: #d64545;
}

.quote-summary {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-card);
    position: sticky;
    top: 6rem;
}

.quote-empty {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--color-muted);
}

.quote-empty svg {
    width: 72px;
    height: 72px;
    margin: 0 auto 1rem;
    display: block;
}

.site-footer {
    background: var(--color-primary);
    color: #ffffff;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

.table-scroll {
    overflow-x: auto;
    background: #ffffff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);
    padding: 1rem;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.alert--success {
    background: #e7f8f1;
    color: #03624f;
}

.alert--error {
    background: #fdecea;
    color: #a3342b;
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(0, 174, 239, 0.12);
    color: var(--color-accent);
}

@media (max-width: 720px) {
    .site-header__inner {
        justify-content: center;
    }

    .main-nav {
        justify-content: center;
    }

    .section {
        padding: 3rem 0;
    }

    .hero {
        padding: 4.5rem 0;
    }

    .hero__title {
        font-size: 2.25rem;
    }

    .hero__subtitle {
        font-size: 1.75rem;
    }
}