/* ===============================================
   RBShops - Dark Theme Stylesheet
   =============================================== */

/* === CSS Variables (Color Palette) === */
:root {
    /* Dark Theme Colors */
    --primary-bg: #0a0e17;
    --secondary-bg: #141824;
    --card-bg: #1a1f2e;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --border-color: #2d3548;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;
    
    /* Transitions */
    --transition-speed: 0.3s;
}

/* === Global Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--text-primary);
    background-color: var(--primary-bg);
    overflow-x: hidden;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

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

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

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

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === Language Switcher === */
.language-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 0.5rem;
    background: var(--card-bg);
    padding: 0.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.lang-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-speed);
}

.lang-btn:hover {
    background: var(--secondary-bg);
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* === Navigation === */
.navbar {
    background: var(--secondary-bg);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
    transition: transform var(--transition-speed);
}

.logo:hover img {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.nav-links a:hover {
    background: var(--card-bg);
    color: var(--accent-color);
}

/* === Hero Section === */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(10, 14, 23, 0.65) 0%, rgba(20, 24, 36, 0.65) 100%), url('../images/hero.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(52, 152, 219, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-color);
    color: white;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-speed);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.cta-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

/* === Sections === */
.section {
    padding: var(--spacing-xl) 0;
}

.section-dark {
    background: var(--secondary-bg);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: 2.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
}

.section-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* === Services Grid === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(52, 152, 219, 0.2);
    border-color: var(--accent-color);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    background: var(--secondary-bg);
    border-radius: 50%;
    color: var(--accent-color);
    transition: all var(--transition-speed);
}

.service-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent-color);
    transition: all var(--transition-speed);
}

.service-card:hover .service-icon {
    background: var(--accent-color);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

.service-card:hover .service-icon svg {
    stroke: white;
    transform: scale(1.1);
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* === Technologies Grid === */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.tech-item {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-speed);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.tech-item:hover {
    border-color: var(--accent-color);
    background: var(--secondary-bg);
    transform: scale(1.05);
}

.tech-item:hover .tech-logo {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.1);
}

.tech-logo {
    width: 64px;
    height: 64px;
    object-fit: contain;
    filter: grayscale(100%) brightness(0.8);
    transition: all var(--transition-speed);
}

.tech-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* === Contact Section === */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contact-form-container {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.submit-button {
    padding: 1rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    margin-top: var(--spacing-sm);
}

.submit-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.submit-button:disabled {
    background: var(--border-color);
    cursor: not-allowed;
    transform: none;
}

.form-message {
    margin-top: var(--spacing-sm);
    padding: 1rem;
    border-radius: 6px;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(39, 174, 96, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.form-message.error {
    display: block;
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

/* === Contact Info === */
.contact-info {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.info-item {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

.info-item strong {
    color: var(--text-primary);
}

.info-item a {
    color: var(--accent-color);
}

/* === Footer === */
.footer {
    background: var(--secondary-bg);
    padding: var(--spacing-md) 0;
    text-align: center;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
}

.footer p {
    margin-bottom: 0.5rem;
}

.privacy-link {
    color: var(--accent-color);
    cursor: pointer;
}

.privacy-link:hover {
    text-decoration: underline;
}

/* === Privacy Modal === */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal.show {
    display: block;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    position: relative;
}

.close {
    color: var(--text-secondary);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color var(--transition-speed);
}

.close:hover,
.close:focus {
    color: var(--text-primary);
}

.modal-close-btn {
    margin-top: var(--spacing-md);
    padding: 0.75rem 2rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-speed);
}

.modal-close-btn:hover {
    background: var(--accent-hover);
}

/* === Responsive Design === */

/* Tablet */
@media (max-width: 1024px) {
    h1 {
        font-size: 2.5rem;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --font-size-base: 14px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero {
        background-attachment: scroll;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .language-switcher {
        top: 10px;
        right: 10px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: var(--spacing-md) 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 0.75rem 1.5rem;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
}