/* CSS Variables from Design System */
:root {
    --primary-background: #000000;
    --secondary-background: #1A1A1A;
    --tertiary-background: #2A2A2A;
    --primary-text: #FFFFFF;
    --secondary-text: #A0A0A0;
    --accent-gradient: linear-gradient(135deg, #0066FF 0%, #00CCFF 100%);
    --border-color: #333333;
    
    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --border-radius-large: 12px;
    --border-radius-extra: 16px;
    
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.35);
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--primary-background);
    color: var(--primary-text);
    line-height: 1.5;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Top Navigation */
.top-navigation {
    background: var(--primary-background);
    border-bottom: 1px solid var(--border-color);
    height: 48px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    color: var(--primary-text);
    font-size: 16px;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-item {
    color: var(--secondary-text);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

.nav-item:hover {
    color: var(--primary-text);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-login {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--primary-text);
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn-login:hover {
    background: var(--tertiary-background);
    border-color: var(--primary-text);
}

.btn-signup {
    background: var(--primary-text);
    color: var(--primary-background);
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn-signup:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-subtle);
}

/* Hero Section */
.hero-section {
    background: var(--primary-background);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px var(--spacing-md) var(--spacing-xxl);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(ellipse at center, rgba(0, 102, 255, 0.3) 0%, rgba(0, 204, 255, 0.2) 30%, transparent 70%);
    filter: blur(120px);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    position: relative;
}

.hero-heading {
    font-size: 64px;
    font-weight: 700;
    color: var(--primary-text);
    line-height: 1.1;
    margin-bottom: 16px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subheading {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-text);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 18px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--primary-text);
    color: var(--primary-background);
    border-radius: var(--border-radius-medium);
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-decoration: none;
    display: inline-block;
}

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

.btn-secondary {
    background: transparent;
    color: var(--primary-text);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-medium);
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn-secondary:hover {
    background: var(--tertiary-background);
    border-color: var(--primary-text);
}

/* Section Styles */
section {
    padding: var(--spacing-xxl) 0;
}

.section-heading {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-text);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* About Section */
.about-section {
    background: var(--secondary-background);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

/* Careers Section */
.careers-section {
    background: var(--primary-background);
}

.careers-content {
    max-width: 800px;
    margin: 0 auto;
}

.careers-text {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.roles-section {
    background: var(--secondary-background);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.roles-heading {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-text);
    margin-bottom: var(--spacing-md);
}

.roles-list {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.roles-list li {
    color: var(--secondary-text);
    font-size: 16px;
    padding: var(--spacing-sm) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.roles-list li::before {
    content: '•';
    color: var(--accent-gradient);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.roles-note {
    font-size: 14px;
    color: var(--secondary-text);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

/* App Section */
.app-section {
    background: var(--primary-background);
}

.app-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.app-text {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

/* Contact Section */
.contact-section {
    background: var(--primary-background);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.contact-info {
    background: var(--secondary-background);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.contact-info p {
    color: var(--secondary-text);
    font-size: 16px;
    margin-bottom: var(--spacing-sm);
}

.contact-info a {
    color: var(--primary-text);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

.contact-info a:hover {
    color: #0066FF;
}

/* Footer */
.footer {
    background: var(--secondary-background);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer p {
    color: var(--secondary-text);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-heading {
        font-size: 48px;
    }
    
    .hero-subheading {
        font-size: 24px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-menu {
        display: none;
    }
    
    .section-heading {
        font-size: 28px;
    }
    
    .roles-section {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-heading {
        font-size: 36px;
    }
    
    .hero-subheading {
        font-size: 20px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus states for accessibility */
button:focus,
a:focus {
    outline: 2px solid #0066FF;
    outline-offset: 2px;
}

/* Animation for gradient text */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-heading {
    background-size: 200% 200%;
    animation: gradient-shift 3s ease infinite;
}

/* Popup Styles */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
}

.popup-overlay.active {
    display: flex;
}

.popup-content {
    background: var(--secondary-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-elevated);
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.popup-header h3 {
    color: var(--primary-text);
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

.close-popup {
    background: transparent;
    border: none;
    color: var(--secondary-text);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-small);
    transition: all 0.2s ease-in-out;
}

.close-popup:hover {
    color: var(--primary-text);
    background: var(--tertiary-background);
}

.application-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    color: var(--primary-text);
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    background: var(--tertiary-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-md);
    color: var(--primary-text);
    font-size: 14px;
    font-family: var(--font-family);
    transition: all 0.2s ease-in-out;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066FF;
    box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.2);
}

.form-group input[type="file"] {
    padding: var(--spacing-sm);
    cursor: pointer;
}

.form-group input[type="file"]::-webkit-file-upload-button {
    background: var(--accent-gradient);
    color: var(--primary-text);
    border: none;
    border-radius: var(--border-radius-small);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    margin-right: var(--spacing-sm);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group select {
    background: var(--tertiary-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-md);
    color: var(--primary-text);
    font-size: 14px;
    font-family: var(--font-family);
    transition: all 0.2s ease-in-out;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-group select:focus {
    outline: none;
    border-color: #0066FF;
    box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.2);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .popup-content {
        padding: var(--spacing-lg);
        margin: var(--spacing-md);
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button {
        width: 100%;
    }
}

/* Now Hiring Section */
.now-hiring-section {
    background: var(--secondary-background);
}

.now-hiring-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.now-hiring-text {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.now-hiring-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.now-hiring-email {
    font-size: 15px;
    color: var(--secondary-text);
    margin-top: var(--spacing-sm);
}

/* Privacy Policy Section */
.privacy-section {
    background: var(--primary-background);
}

.privacy-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.privacy-date {
    font-size: 14px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    font-style: italic;
}

.privacy-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-text);
    margin: var(--spacing-xl) 0 var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

.privacy-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-text);
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
}

.privacy-content p {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.privacy-content ul {
    margin: var(--spacing-md) 0 var(--spacing-lg) var(--spacing-lg);
}

.privacy-content li {
    font-size: 16px;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.privacy-content strong {
    color: var(--primary-text);
    font-weight: 600;
}

/* Footer Privacy Button */
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.btn-privacy {
    background: transparent;
    color: var(--secondary-text);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-decoration: none;
}

.btn-privacy:hover {
    color: var(--primary-text);
    border-color: var(--primary-text);
    background: var(--tertiary-background);
}

/* Privacy Popup Specific Styles */
.privacy-popup-content {
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
}

.privacy-popup-content .privacy-content {
    max-width: none;
    text-align: left;
}

.privacy-popup-content .privacy-content h3 {
    font-size: 20px;
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

.privacy-popup-content .privacy-content h4 {
    font-size: 16px;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.privacy-popup-content .privacy-content p,
.privacy-popup-content .privacy-content li {
    font-size: 14px;
    line-height: 1.5;
}

.privacy-popup-content .privacy-content ul {
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-md);
}

.privacy-popup-content .privacy-content li {
    margin-bottom: var(--spacing-xs);
}

/* Responsive footer */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .btn-privacy {
        margin-top: var(--spacing-sm);
    }
    
    .privacy-popup-content {
        margin: var(--spacing-md);
        max-height: 85vh;
    }
}