/* CSS Reset & Base Styles */
*, *::before, *::after { 
    box-sizing: border-box; 
}

* { 
    margin: 0; 
}

body { 
    line-height: 1.5; 
    -webkit-font-smoothing: antialiased; 
}

img, picture, video, canvas, svg { 
    display: block; 
    max-width: 100%; 
}

input, button, textarea, select { 
    font: inherit; 
}

/* CSS Custom Properties */
:root {
    /* Colors */
    --primary-black: #000000;
    --accent-pink: #FF4B6E;
    --light-gray: #F5F5F5;
    --medium-gray: #6B7280;
    --dark-gray: #374151;
    --white: #FFFFFF;
    --background: #fffef9;
    --green-accent: #DAEB28;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Layout */
    --container-max: 900px;
    
    /* Font sizes */
    --font-xs: 0.875rem;   /* 14px */
    --font-sm: 1rem;       /* 16px */
    --font-base: 1.125rem; /* 18px */
    --font-lg: 1.25rem;    /* 20px */
    --font-xl: 1.5rem;     /* 24px */
    --font-2xl: 2rem;      /* 32px */
    --font-3xl: 3rem;      /* 48px */
    --font-4xl: 3.75rem;   /* 60px */
}

/* Base Styles */
body {
    font-family: var(--font-family);
    color: var(--primary-black);
    background-color: var(--background);
    font-size: var(--font-sm);
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hidden {
    display: none !important;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
    background-color: var(--background);
}

/* Logo */
.logo-container {
    position: absolute;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.logo-svg {
    width: 160px;
    height: 100px;
    display: block;
}

/* Hero Content */
.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding-top: 4rem;
}

/* Badge */
.badge {
    display: inline-block;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    padding: 0.5rem 1.5rem;
    border-radius: 100px;
    font-size: var(--font-xs);
    font-weight: 500;
    margin-bottom: 2rem;
    letter-spacing: 0.01em;
}

/* Headline */
.headline {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--primary-black);
}

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

/* Subheading */
.subheading {
    font-size: var(--font-lg);
    font-weight: 400;
    line-height: 1.6;
    color: var(--medium-gray);
    margin-bottom: 3rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

/* Signup Form */
.signup-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    background-color: var(--light-gray);
    padding: 0.5rem;
    border-radius: 100px;
}

.email-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 1rem 1.5rem;
    font-size: var(--font-sm);
    color: var(--primary-black);
    outline: none;
    min-width: 0;
}

.email-input::placeholder {
    color: var(--medium-gray);
    font-weight: 400;
}

.email-input:focus {
    outline: none;
}

.btn-submit {
    background: var(--green-accent);
    color: var(--primary-black);
    border: none;
    padding: 1rem 2rem;
    font-weight: 700;
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    border-radius: 100px;
    flex-shrink: 0;
}

.btn-submit:hover {
    transform: scale(1.05);
}

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

.btn-submit i {
    width: 18px;
    height: 18px;
}

/* Success Message */
.success-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--white);
    border: 2px solid var(--primary-black);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    text-align: center;
    max-width: 400px;
    width: 90%;
    display: none;
}

.success-content i {
    font-size: 48px;
    color: var(--green-accent);
    margin-bottom: 1rem;
}

.success-content h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-black);
}

.success-content p {
    font-size: var(--font-sm);
    line-height: 1.5;
    margin-bottom: 1.5rem;
    color: var(--medium-gray);
}

.btn-close {
    background: var(--primary-black);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: var(--font-sm);
}

.btn-close:hover {
    background: #1a1a1a;
    transform: translateY(-1px);
}

/* Error States */
.form-error {
    color: #ef4444;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: var(--font-sm);
    margin-top: 1rem;
    text-align: center;
}

/* Loading States */
.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-submit .loading {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    :root {
        --font-lg: 1.125rem;
        --font-2xl: 1.75rem;
        --font-3xl: 2.25rem;
        --font-4xl: 2.75rem;
    }
    
    .logo-container {
        top: 1.5rem;
    }
    
    .logo-svg {
        width: 120px;
        height: 70px;
    }
    
    .hero-content {
        padding-top: 5rem;
    }
    
    .headline {
        font-size: 2.25rem;
        margin-bottom: 1.25rem;
    }
    
    .subheading {
        font-size: 1.125rem;
        margin-bottom: 2rem;
        padding: 0 1rem;
    }
    
    .badge {
        font-size: 0.8125rem;
        padding: 0.4375rem 1.25rem;
        margin-bottom: 1.5rem;
    }
    
    .form-wrapper {
        flex-direction: column;
        background: transparent;
        padding: 0;
        gap: 1rem;
    }
    
    .email-input {
        width: 100%;
        padding: 1rem 1.5rem;
        text-align: center;
        background: var(--light-gray);
        border-radius: 100px;
        border: 1px solid #E5E7EB;
    }
    
    .btn-submit {
        width: 100%;
        justify-content: center;
        padding: 1rem 1.5rem;
        border-radius: 100px;
    }
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-black);
    outline-offset: 2px;
}

.email-input:focus-visible {
    outline: none !important;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--background);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem 4rem;
    margin-bottom: 5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-dot {
    width: 12px;
    height: 12px;
    background: var(--green-accent);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.5rem;
}

.feature-content {
    flex: 1;
}

.feature-title {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--primary-black);
    line-height: 1.3;
    margin-bottom: 0.75rem;
    margin-top: 0;
}

.feature-description {
    font-size: var(--font-base);
    color: var(--medium-gray);
    line-height: 1.6;
    margin: 0;
}

/* Platform Section */
.platform-section {
    text-align: center;
}

.platform-heading {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--primary-black);
    margin-bottom: 3rem;
    margin-top: 0;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 2rem;
    margin-bottom: 2.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.platform-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.25rem;
}

.platform-icon i {
    width: 24px;
    height: 24px;
}

.instagram-icon {
    background: rgba(225, 48, 108, 0.1);
}

.instagram-icon i {
    color: #E1306C;
}

.x-icon {
    background: rgba(0, 0, 0, 0.1);
}

.x-icon i,
.x-icon svg {
    color: #000000;
    fill: #000000;
}

.linkedin-icon {
    background: rgba(0, 119, 181, 0.1);
}

.linkedin-icon i {
    color: #0077B5;
}

.tiktok-icon {
    background: rgba(105, 105, 105, 0.1);
}

.tiktok-icon i,
.tiktok-icon svg {
    color: #000000;
    fill: #000000;
}

.youtube-icon {
    background: rgba(255, 0, 0, 0.1);
}

.youtube-icon i {
    color: #FF0000;
}

.facebook-icon {
    background: rgba(24, 119, 242, 0.1);
}

.facebook-icon i {
    color: #1877F2;
}

.platform-name {
    font-size: var(--font-sm);
    color: var(--medium-gray);
    font-weight: 500;
}

.platform-tagline {
    font-size: var(--font-lg);
    color: var(--medium-gray);
    margin: 0;
    font-weight: 400;
}

/* Mobile Responsive for Features */
@media (max-width: 768px) {
    .features {
        padding: 3rem 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 3rem;
    }
    
    .feature-title {
        font-size: var(--font-lg);
    }
    
    .platform-heading {
        font-size: var(--font-xl);
        margin-bottom: 2rem;
    }
    
    .platforms-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .platform-icon {
        width: 50px;
        height: 50px;
    }
    
    .platform-icon i {
        width: 20px;
        height: 20px;
    }
    
    .platform-tagline {
        font-size: var(--font-base);
        padding: 0 1rem;
    }
}

/* Final CTA Section */
.final-cta {
    padding: 5rem 0;
    background: var(--background);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-headline {
    font-size: var(--font-2xl);
    font-weight: 800;
    color: var(--primary-black);
    line-height: 1.2;
    margin-bottom: 1rem;
    margin-top: 0;
}

.cta-subheading {
    font-size: var(--font-base);
    color: var(--medium-gray);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    margin-top: 0;
}

/* CTA Form */
.cta-form {
    max-width: 500px;
    margin: 0 auto;
}

.cta-form-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    background-color: var(--white);
    padding: 0.5rem;
    border-radius: 100px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.cta-email-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 1rem 1.5rem;
    font-size: var(--font-sm);
    color: var(--primary-black);
    outline: none;
    min-width: 0;
}

.cta-email-input::placeholder {
    color: var(--medium-gray);
    font-weight: 400;
}

.cta-email-input:focus {
    outline: none;
}

.cta-btn-submit {
    background: var(--green-accent);
    color: var(--primary-black);
    border: none;
    padding: 1rem 2rem;
    font-weight: 700;
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    border-radius: 100px;
    flex-shrink: 0;
}

.cta-btn-submit:hover {
    transform: scale(1.05);
}

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

.cta-btn-submit i {
    width: 18px;
    height: 18px;
}

/* CTA Mobile Responsive */
@media (max-width: 768px) {
    .final-cta {
        padding: 3rem 0;
    }
    
    .cta-headline {
        font-size: var(--font-xl);
        margin-bottom: 1rem;
    }
    
    .cta-subheading {
        font-size: var(--font-sm);
        margin-bottom: 2rem;
        padding: 0 1rem;
    }
    
    .cta-form-wrapper {
        flex-direction: column;
        background: transparent;
        padding: 0;
        gap: 1rem;
        box-shadow: none;
    }
    
    .cta-email-input {
        width: 100%;
        padding: 1rem 1.5rem;
        text-align: center;
        background: var(--white);
        border-radius: 100px;
        border: 1px solid #E5E7EB;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }
    
    .cta-btn-submit {
        width: 100%;
        justify-content: center;
        padding: 1rem 1.5rem;
        border-radius: 100px;
    }
}

/* Smooth transitions */
* {
    transition: outline 0.2s ease;
}