/* SESMA SEALS AND HYDRAULICS - Go9 Website Styles */
/* Modern Industrial Design with Professional Aesthetic */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Industrial Theme */
    --primary-blue: #1e3a8a;
    --primary-blue-light: #3b82f6;
    --secondary-orange: #f97316;
    --accent-gray: #6b7280;
    --dark-gray: #374151;
    --light-gray: #f3f4f6;
    --white: #ffffff;
    --black: #111827;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
}

/* Base Typography */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--black);
    margin-bottom: var(--space-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

/* Links */
a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-blue-light);
}

a:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px; /* Touch target */
}

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

.btn-primary:hover {
    background-color: var(--primary-blue-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

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

.btn-accent:hover {
    background-color: #ea580c;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-3xl) 0;
}

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

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-lg);
}

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

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

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

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

/* Text Utilities */
.text-center {
    text-align: center;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.text-gray {
    color: var(--accent-gray);
}

.text-primary {
    color: var(--primary-blue);
}

.font-bold {
    font-weight: 700;
}

.font-semibold {
    font-weight: 600;
}

/* Header */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    text-decoration: none;
}

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

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    margin: 0;
}

.nav-links a {
    font-weight: 500;
    color: var(--dark-gray);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--primary-blue);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-gray);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: block;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: var(--white);
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/industrial-seals-sevenstorm-juhaszimrus-401982.jpg') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--space-md);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--white);
    font-size: 1.5rem;
}

.card h3 {
    margin-bottom: var(--space-sm);
    color: var(--black);
}

.card p {
    color: var(--accent-gray);
    margin-bottom: var(--space-md);
}

/* Value Props Section */
.value-props {
    background-color: var(--light-gray);
}

.value-props .grid {
    gap: var(--space-xl);
}

/* Services Section */
.services-preview {
    padding: var(--space-3xl) 0;
}

.service-card {
    text-align: center;
    padding: var(--space-xl);
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.service-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-2px);
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

/* Trust Banner */
.trust-banner {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: var(--space-xl) 0;
    text-align: center;
}

.trust-banner h2 {
    color: var(--white);
    margin-bottom: var(--space-sm);
}

.trust-banner p {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* CTA Band */
.cta-band {
    background-color: var(--secondary-orange);
    color: var(--white);
    padding: var(--space-xl) 0;
    text-align: center;
}

.cta-band h2 {
    color: var(--white);
    margin-bottom: var(--space-md);
}

.cta-band p {
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    opacity: 0.9;
}

/* Forms */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--dark-gray);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-sm);
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

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

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.form-checkbox input[type="checkbox"] {
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.form-checkbox label {
    font-size: 0.875rem;
    line-height: 1.5;
    cursor: pointer;
}

.form-error {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--primary-blue);
    color: var(--white);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background-color: #059669;
}

.toast.error {
    background-color: #dc2626;
}

/* Footer */
.footer {
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--space-md);
}

.footer-section p,
.footer-section li {
    color: #d1d5db;
    margin-bottom: var(--space-xs);
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: #d1d5db;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: var(--space-lg);
    text-align: center;
    color: #9ca3af;
}

/* Contact Page Specific */
.contact-info {
    background-color: var(--light-gray);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
}

.contact-info h3 {
    margin-bottom: var(--space-md);
}

.contact-details {
    display: grid;
    gap: var(--space-md);
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.contact-detail i {
    width: 20px;
    color: var(--primary-blue);
}

/* About Page Specific */
.about-hero {
    background: linear-gradient(135deg, var(--light-gray) 0%, #e5e7eb 100%);
    padding: var(--space-3xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-sidebar {
    background-color: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 100px;
}

/* Services Page Specific */
.service-detail {
    background-color: var(--white);
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-normal);
}

.service-detail:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.service-detail h3 {
    color: var(--primary-blue);
    margin-bottom: var(--space-md);
}

.service-features {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.service-features li {
    padding: var(--space-xs) 0;
    position: relative;
    padding-left: var(--space-lg);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

/* Utility Classes */
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.hidden { display: none; }
.visible { display: block; }

/* Responsive Design */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .about-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .hero {
        padding: var(--space-2xl) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: var(--space-md);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .section {
        padding: 1rem 0;
    }
}