/* Reset et base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #667eea;
    margin: 0;
}

.logo .tagline {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-weight: 400;
}

/* Navigation mobile */
.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #667eea;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

/* Main */
.main {
    margin-top: 80px;
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
    color: white;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Languages Section */
.languages {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin: 2rem 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

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

.language-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.language-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s;
}

.language-card:hover::before {
    left: 100%;
}

.language-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.language-flag {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    position: relative;
    z-index: 2;
}

.language-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.language-card p {
    color: #7f8c8d;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 2;
    overflow: hidden;
}

.btn::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 0.5s;
}

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

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.4);
}

/* QR Section */
.qr-section {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin: 2rem 1rem;
}

.qr-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.qr-text h3 {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.qr-text p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.6;
}

.qr-generator {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.qr-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.qr-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.qr-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.qr-result {
    text-align: center;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #e9ecef;
    border-radius: 10px;
    background: #f8f9fa;
}

.qr-result img {
    max-width: 200px;
    height: auto;
}

/* Footer */
.footer {
    background: rgba(44, 62, 80, 0.95);
    backdrop-filter: blur(10px);
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-info p {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #667eea;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .languages-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .language-card {
        padding: 1.5rem;
    }

    .qr-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .qr-form {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }

    .languages {
        margin: 1rem 0.5rem;
        padding: 2rem 1rem;
    }

    .qr-section {
        margin: 1rem 0.5rem;
        padding: 2rem 1rem;
    }

    .language-card {
        padding: 1rem;
    }

    .qr-generator {
        padding: 1rem;
    }
}

/* Language switching */
[data-lang]:not([data-lang="fr"]) {
    display: none;
}

body[data-current-lang="de"] [data-lang]:not([data-lang="de"]) {
    display: none;
}

body[data-current-lang="de"] [data-lang="de"] {
    display: block;
}

body[data-current-lang="en"] [data-lang]:not([data-lang="en"]) {
    display: none;
}

body[data-current-lang="en"] [data-lang="en"] {
    display: block;
}

body[data-current-lang="it"] [data-lang]:not([data-lang="it"]) {
    display: none;
}

body[data-current-lang="it"] [data-lang="it"] {
    display: block;
}

body[data-current-lang="es"] [data-lang]:not([data-lang="es"]) {
    display: none;
}

body[data-current-lang="es"] [data-lang="es"] {
    display: block;
}

body[data-current-lang="nl"] [data-lang]:not([data-lang="nl"]) {
    display: none;
}

body[data-current-lang="nl"] [data-lang="nl"] {
    display: block;
}

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

.language-card {
    animation: fadeInUp 0.6s ease forwards;
}

.language-card:nth-child(1) { animation-delay: 0.1s; }
.language-card:nth-child(2) { animation-delay: 0.2s; }
.language-card:nth-child(3) { animation-delay: 0.3s; }
.language-card:nth-child(4) { animation-delay: 0.4s; }
.language-card:nth-child(5) { animation-delay: 0.5s; }
.language-card:nth-child(6) { animation-delay: 0.6s; }

/* Loading states */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Product pages styles */
.product-info {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin: 2rem 1rem;
    padding: 3rem 0;
}

.product-details h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.info-item strong {
    color: #667eea;
    font-weight: 600;
}

.info-item span {
    color: #2c3e50;
    font-weight: 500;
}

/* Navigation links */
.nav-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #5a6bd8;
}

/* Print styles */
@media print {
    body {
        background: white !important;
        color: black !important;
    }
    
    .header,
    .footer,
    .qr-section {
        display: none !important;
    }
    
    .languages {
        background: white !important;
        box-shadow: none !important;
    }
    
    .language-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}