@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

:root {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F1F5F9;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --border-color: #E2E8F0;
    --card-bg: #FFFFFF;
    
    --electric-blue: #2563EB;
    --navy: #0F172A;
    --white: #FFFFFF;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-theme {
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --border-color: #334155;
    --card-bg: #1E293B;
    --white: #F8FAFC;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color 0.3s ease, color 0.3s ease;
}

header {
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.logo span {
    color: var(--electric-blue);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.lang-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-selector button {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.lang-selector button.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.hero {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--electric-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.email-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
}

.email-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    padding: 1rem 2rem;
    border-radius: 12px;
    border: none;
    background: var(--electric-blue);
    color: #FFFFFF !important;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

.hero-illustration img {
    width: 100%;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.features {
    background: var(--bg-secondary);
    padding: 6rem 2rem;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-icon {
    font-size: 2rem;
    color: var(--electric-blue);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
}

.cta-section {
    padding: 6rem 2rem;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--text-primary), var(--electric-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta-section .email-form {
    margin: 0 auto;
}

footer {
    padding: 4rem 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--electric-blue);
}

.footer-bottom {
    color: var(--text-secondary);
}

@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 4rem 1rem;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .email-form {
        flex-direction: column;
        margin: 0 auto;
    }
    .hero-illustration {
        order: -1;
    }
}

/* HIGH PRECEDENCE OVERRIDES FOR DARK MODE */

body.dark-theme .lang-selector button {
    color: #F8FAFC !important;
    border-color: #334155 !important;
}

body.dark-theme .lang-selector button.active {
    background: #F8FAFC !important;
    color: #0F172A !important;
    border-color: #F8FAFC !important;
}

body.dark-theme .logo {
    color: #F8FAFC !important;
}

body.dark-theme .theme-toggle {
    color: #F8FAFC !important;
}

body.dark-theme #cta_button,
body.dark-theme #cta_button_2,
body.dark-theme .btn-primary {
    color: #FFFFFF !important;
    background-color: var(--electric-blue) !important;
}