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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

.nav-brand i {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #2563eb;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: white;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.demo-invitation {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    max-width: 500px;
    margin: 0 auto;
}

.demo-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #f8fafc;
}

.demo-sms {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #e2e8f0;
}

.demo-sms strong {
    color: white;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 8px;
    border-radius: 6px;
    margin: 0 2px;
}

/* QR Code Styles */
.demo-qr, .contact-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.demo-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

.demo-link:hover {
    transform: scale(1.05);
}

.demo-link:hover .qr-code {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.qr-code {
    width: 150px;
    height: 150px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    background: white;
    padding: 8px;
    transition: box-shadow 0.3s ease;
}

/* Phone Mockup */
.hero-phone {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: #1e293b;
    border-radius: 30px;
    padding: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: #64748b;
    border-radius: 2px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #f8fafc;
    border-radius: 22px;
    overflow: hidden;
    position: relative;
}

/* WhatsApp Conversation */
.whatsapp-conversation {
    height: 100%;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
}

.whatsapp-message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
    animation: slideIn 0.5s ease-out;
    opacity: 0;
    transform: translateY(20px);
}

.whatsapp-message.show {
    opacity: 1;
    transform: translateY(0);
}

.whatsapp-message.user {
    background: #2563eb;
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.whatsapp-message.alfred {
    background: #e2e8f0;
    color: #1e293b;
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.whatsapp-typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: #e2e8f0;
    border-radius: 18px;
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    max-width: 60px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: #64748b;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 16px;
    background: #f8fafc;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* How it works Section */
.how-it-works {
    padding: 80px 0;
    background: #f8fafc;
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.step p {
    color: #64748b;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    font-weight: 600;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.contact-email:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.contact-email i {
    font-size: 1.3rem;
}

.contact-email span {
    font-size: 1.2rem;
    font-weight: 600;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 2rem 0 1rem;
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid #334155;
    color: #cbd5e1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .nav-links {
        display: none;
    }

    .features-grid,
    .steps {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

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

    .qr-code {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .qr-code {
        width: 100px;
        height: 100px;
    }
}