:root {
    --bg-color: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --accent-start: #2dd4bf;
    --accent-end: #06b6d4;
    --card-bg: #ffffff;
    --card-border: #f3f4f6;
    --font-main: system-ui, -apple-system, sans-serif;
    --shadow-soft: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Gradient Text Utility */
.text-gradient {
    background: linear-gradient(to right, var(--accent-start), var(--accent-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.btn-gradient {
    background: linear-gradient(to right, var(--accent-start), var(--accent-end));
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-block;
    box-shadow: 0 4px 6px -1px rgba(45, 212, 191, 0.3);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(45, 212, 191, 0.4);
}

/* Header */
header {
    padding: 1.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-color);
    text-decoration: none;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 0 8rem;
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: left;
    background: #ffffff;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: -190px;
    right: -170px;
    bottom: 0;
    left: 0;
    background-image: url('assets/groupe-d-amis-dansant-a-la-plage.jpg');
    background-size: cover;
    background-position: center right;
    z-index: 0;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(90deg, 
        #ffffff 0%, 
        #ffffff 35%, 
        rgba(255, 255, 255, 0.85) 50%, 
        rgba(255, 255, 255, 0) 90%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    width: 100%;
    display: flex;
    justify-content: flex-start;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: #111827;
}

.hero .subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-weight: 500;
}

.hero-description {
    max-width: 540px;
    margin: 0 0 2rem;
    color: var(--text-muted);
    font-size: 1.125rem;
}

/* Problem/Solution Section */
.problem-solution {
    padding: 6rem 0;
    background-color: #f9fafb;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    color: #111827;
}

.text-muted {
    color: var(--text-muted);
    line-height: 1.7;
}

.coco-highlight {
    background: #ffffff;
    border: 1px solid #f0fdfa;
    border-radius: 1.5rem;
    padding: 2.5rem;
    margin: 2rem 0;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.coco-highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--accent-start), var(--accent-end));
}

.coco-header{
    display: flex;
    align-items: flex-end;
    margin-bottom: 20px;
}

.coco-highlight h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    padding-left: 20px;
}

.coco-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    filter: drop-shadow(0 4px 6px rgba(45, 212, 191, 0.4));
    border-radius: 50%;
}

/* Features Steps */
.steps {
    padding: 6rem 0;
    background-color: white;
}

.steps-intro {
    text-align: center;
    margin-bottom: 5rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

@media (min-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.step-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.5rem;
    padding: 2.5rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
    position: relative;
    z-index: 1;
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(45, 212, 191, 0.3);
}

.step-number {
    font-size: 4rem;
    font-weight: 900;
    color: #f0fdfa;
    line-height: 1;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    z-index: -1;
    user-select: none;
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: #111827;
}

.step-subtitle {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    display: block;
    font-weight: 700;
    background: linear-gradient(to right, var(--accent-start), var(--accent-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.step-description {
    color: var(--text-muted);
}

/* Form Styles */
.beta-form {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    max-width: 500px;
}

.email-input,
.text-input,
.select-input {
    flex: 1;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--card-border);
    border-radius: 0.75rem;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease;
    background: white;
    width: 100%;
    font-family: inherit;
}

.email-input:focus,
.text-input:focus,
.select-input:focus {
    border-color: var(--accent-start);
}

/* Detailed Form Styles */
.form-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 1.5rem;
    padding: 3rem;
    box-shadow: var(--shadow-soft);
}

.form-section {
    margin-bottom: 3rem;
}

.form-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: #111827;
    border-bottom: 2px solid #f3f4f6;
    padding-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #374151;
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-label,
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: normal;
}

input[type="radio"],
input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--accent-start);
}

.range-container {
    padding: 1rem 0;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--accent-start);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

textarea.text-input {
    min-height: 100px;
    resize: vertical;
}

/* Footer */
footer {
    padding: 6rem 0 3rem;
    text-align: center;
    border-top: 1px solid var(--card-border);
    background: linear-gradient(to bottom, #ffffff, #f0fdfa);
}

.footer-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #111827;
}

.footer-text {
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: var(--text-muted);
}

.copyright {
    margin-top: 4rem;
    color: #9ca3af;
    font-size: 0.875rem;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .coco-highlight {
        padding: 1.5rem;
    }
    
    .beta-form {
        flex-direction: column;
    }
    
    .btn-gradient {
        width: 100%;
        text-align: center;
    }

    /* Hide nav button on mobile */
    nav .btn-gradient {
        display: none;
    }

    /* Improve Hero on Mobile */
    .hero {
        padding-top: 8rem;
        padding-bottom: 4rem;
        min-height: auto;
        text-align: center;
        justify-content: center;
        background: radial-gradient(circle at 50% 0%, rgba(45, 212, 191, 0.1) 0%, transparent 50%);
    }

    .hero-background {
        display: none;
    }

    .hero .container {
        justify-content: center;
    }

    .hero-content {
        max-width: 100%;
    }
    
    .form-container {
        padding: 1.5rem;
    }
}