/*
  Adventa CNC Solutions
  Enhanced professional aesthetic with rich visual hierarchy
*/

/* --- CSS Custom Properties --- */
:root {
    --color-primary: #D32F2F;
    --color-primary-dark: #B71C1C;
    --color-primary-light: #E57373;
    --color-secondary: #1565C0;
    --color-dark: #1A1A1A;
    --color-dark-alt: #2C2C2C;
    --color-text: #424242;
    --color-text-light: #757575;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F5F5F5;
    --color-bg-dark: #212121;
    --color-border: #E0E0E0;

    --font-primary: 'Montserrat', sans-serif;

    --container-width: 1200px;
    --container-padding: 2rem;

    --border-radius: 4px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Global Styles --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover:not(.btn) {
    color: var(--color-primary-dark);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-dark);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

.container {
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

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

.section-headline {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-dark);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-subheadline {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--border-radius);
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.5s ease;
}

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

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg);
    font-weight: 700;
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-dark);
    border-color: var(--color-border);
    font-weight: 600;
}

.btn-secondary:hover {
    background-color: var(--color-dark);
    color: var(--color-bg);
    border-color: var(--color-dark);
}

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

.btn-outline:hover {
    background-color: var(--color-bg);
    color: var(--color-dark);
}

.btn-nav {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
    background-color: var(--color-primary);
    color: var(--color-bg);
    font-weight: 700;
}

/* --- Header & Navigation --- */
.main-header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.main-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.5px;
}

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

.main-nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.main-nav a:not(.btn-nav) {
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.5rem 0;
    position: relative;
}

.main-nav a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition);
}

.main-nav a:not(.btn-nav):hover {
    color: var(--color-primary);
}

.main-nav a:not(.btn-nav):hover::after {
    width: 100%;
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 1rem;
    border-left: 1px solid var(--color-border);
    margin-left: 1rem;
}

.language-switcher .active-lang {
    font-weight: 700;
    color: var(--color-dark);
    font-size: 0.875rem;
}

.language-switcher .inactive-lang {
    font-weight: 600;
    color: var(--color-text-light);
    opacity: 0.7;
    transition: var(--transition);
    font-size: 0.875rem;
}

.language-switcher .inactive-lang:hover {
    opacity: 1;
    color: var(--color-primary);
}

/* --- Hero Section --- */
.hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-alt) 100%);
    color: var(--color-bg);
    padding: 8rem 0 6rem;
    margin-top: 73px;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
            radial-gradient(circle at 20% 50%, rgba(211, 47, 47, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 80%, rgba(21, 101, 192, 0.1) 0%, transparent 50%);
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-headline {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-bg);
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero-subheading {
    font-size: 1.25rem;
    max-width: 850px;
    margin: 0 auto 3rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

/* --- Machines Section --- */
.machines-section {
    padding: 6rem 0;
    background-color: var(--color-bg-alt);
}

.machines-grid {
    display: grid;
    gap: 2rem;
}

.machine-card {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
}

.machine-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.machine-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
}

.card-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-content h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--color-dark);
    font-weight: 700;
}

.spec-list {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.spec-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-bg-alt);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.spec-list li:last-child {
    border-bottom: none;
}

.spec-list strong {
    color: var(--color-text-light);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    margin-right: 1rem;
}

/* --- Why Adventa Section --- */
.why-adventa-section {
    padding: 6rem 0;
    background-color: var(--color-bg);
}

.advantage-grid {
    display: grid;
    gap: 3rem;
}

.advantage-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background-color: var(--color-bg-alt);
    border-radius: var(--border-radius);
    transition: all var(--transition);
    border: 1px solid transparent;
}

.advantage-card:hover {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.advantage-card h3 {
    margin-bottom: 1.25rem;
    font-size: 1.375rem;
    color: var(--color-dark);
}

.advantage-card p {
    color: var(--color-text);
    line-height: 1.8;
}

/* --- Contact Section --- */
.contact-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.contact-text {
    max-width: 700px;
    margin: 0 auto 4rem;
    color: var(--color-text);
    font-size: 1.125rem;
    line-height: 1.8;
}

.contact-wrapper {
    display: grid;
    gap: 3rem;
    max-width: 1100px;
    margin: 0 auto;
}

.contact-form {
    background: var(--color-bg);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 2rem;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-dark);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    padding: 1rem 1.25rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition);
    background: var(--color-bg);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: #bdbdbd;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 160px;
    line-height: 1.7;
}

.btn-submit {
    width: 100%;
    padding: 1.25rem;
    font-size: 1rem;
    margin-top: 0.5rem;
    cursor: pointer;
}

.contact-info {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-alt) 100%);
    padding: 3rem;
    border-radius: var(--border-radius);
    height: fit-content;
    box-shadow: var(--shadow-md);
    color: var(--color-bg);
}

.contact-info h3 {
    margin-bottom: 2.5rem;
    font-size: 1.75rem;
    color: var(--color-bg);
}

.contact-details {
    font-style: normal;
}

.contact-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.contact-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-item strong {
    display: block;
    color: var(--color-primary-light);
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
}

.contact-item p {
    margin: 0;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

.contact-item a {
    color: var(--color-bg);
    font-weight: 500;
    transition: all var(--transition);
}

.contact-item a:hover {
    color: var(--color-primary-light);
}

/* --- Machine Detail Page --- */
.machine-detail-section {
    padding: 6rem 0;
    margin-top: 73px;
}

.machine-detail-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 4rem;
}

.machine-image-container {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.machine-detail-image {
    width: 100%;
}

.machine-specs {
    background-color: var(--color-bg-alt);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.machine-specs h2 {
    margin-bottom: 2rem;
    font-size: 1.75rem;
}

.machine-specs ul {
    list-style: none;
    padding-left: 0;
}

.machine-specs li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.machine-specs li:last-child {
    border-bottom: none;
}

.machine-specs strong {
    color: var(--color-text-light);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    margin-right: 1rem;
}

.machine-description,
.machine-applications {
    margin-top: 4rem;
}

.machine-description h2,
.machine-applications h2 {
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

.machine-description p,
.machine-applications p {
    line-height: 1.8;
    color: var(--color-text);
    font-size: 1.0625rem;
}

/* --- Footer --- */
.main-footer {
    background-color: var(--color-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 3rem 0;
    text-align: center;
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.social-links {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.social-links a {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
    transition: color var(--transition);
    font-size: 0.9375rem;
}

.social-links a:hover {
    color: var(--color-primary-light);
}

/* --- Accessibility --- */
*:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 1001;
}

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

/* --- Responsive Design --- */
@media (min-width: 768px) {
    .section-headline {
        font-size: 3rem;
    }

    .hero-headline {
        font-size: 4rem;
    }

    .machines-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .machine-detail-grid {
        grid-template-columns: 1.2fr 1fr;
    }

    .advantage-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

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

    .contact-wrapper {
        grid-template-columns: 1.5fr 1fr;
    }
}

@media (max-width: 767px) {
    .main-nav ul {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .main-nav a:not(.btn-nav) {
        font-size: 0.8125rem;
    }

    .hero-headline {
        font-size: 2.25rem;
    }

    .hero-subheading {
        font-size: 1rem;
    }

    .section-headline {
        font-size: 1.875rem;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.625rem; }
    h3 { font-size: 1.375rem; }
}