/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Healthcare-inspired color palette */
    --primary-color: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --secondary-light: #34d399;
    --accent-color: #f59e0b;
    
    /* Neutral colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Text colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-light: var(--gray-500);
    
    /* Background colors */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-card: #ffffff;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.content {
    width: 100%;
    max-width: 800px;
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
}

/* Logo Section */
.logo-section {
    margin-bottom: var(--spacing-3xl);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.logo-icon {
    color: var(--primary-color);
    animation: pulse 2s infinite;
}

.logo-text {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* Hero Section */
.hero-section {
    margin-bottom: var(--spacing-3xl);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features-section {
    margin-bottom: var(--spacing-3xl);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.feature-card {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: white;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.5;
}

/* CTA Section */
.cta-section {
    margin-bottom: var(--spacing-2xl);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--secondary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    animation: slideInDown 0.6s ease-out 0.3s both;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.cta-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

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

.form-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    position: relative;
    align-items: stretch;
}

.email-input {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-family: var(--font-family);
    background: var(--bg-primary);
    transition: all 0.3s ease;
    outline: none;
    min-height: 56px;
    box-shadow: var(--shadow-sm);
}

.email-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgb(37 99 235 / 0.1), var(--shadow-md);
    transform: translateY(-1px);
}

.email-input::placeholder {
    color: var(--text-light);
    font-size: var(--font-size-base);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    padding: 0 var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all 0.3s ease;
    white-space: nowrap;
    outline: none;
    position: relative;
    overflow: hidden;
    min-width: 160px;
    min-height: 56px;
    box-shadow: var(--shadow-md);
}

.submit-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 ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.submit-btn:active {
    transform: translateY(-1px);
}

.form-note {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    text-align: center;
    margin-top: var(--spacing-sm);
}

/* Footer */
.footer {
    margin-top: auto;
    padding-top: var(--spacing-2xl);
    text-align: center;
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        max-width: 400px;
    }
    
    .feature-card {
        min-height: auto;
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .logo-text {
        font-size: var(--font-size-3xl);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .form-group {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .email-input {
        min-height: 52px;
        font-size: var(--font-size-base);
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .submit-btn {
        justify-content: center;
        min-height: 52px;
        padding: var(--spacing-md) var(--spacing-xl);
    }
    
    .email-form {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .logo {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .logo-text {
        font-size: var(--font-size-2xl);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.email-input:focus,
.submit-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --gray-200: #000000;
        --text-secondary: #000000;
        --text-light: #000000;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #111827;
        --bg-secondary: #1f2937;
        --bg-card: #1f2937;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-light: #9ca3af;
        --gray-200: #374151;
    }
    
    body {
        background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    }
    
    .feature-card {
        border-color: var(--gray-600);
    }
    
    .email-input {
        background: var(--bg-card);
        border-color: var(--gray-600);
        color: var(--text-primary);
    }
}