:root {
    --primary-blue: #2563eb;
    --blue-light: #3b82f6;
    --blue-dark: #1d4ed8;
    --secondary-purple: #7c3aed;
    --accent-teal: #06b6d4;
    --accent-pink: #ec4899;
    --white: #ffffff;
    --gray-light: #f8fafc;
    --gray-medium: #e2e8f0;
    --gray-dark: #64748b;
    --black: #1e293b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    color: var(--black);
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    position: relative;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo i {
    font-size: 32px;
    color: var(--primary-blue);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 24px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    color: var(--accent-teal);
}

.nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: var(--gray-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 8px 0;
}

.nav a:hover {
    color: var(--primary-blue);
}

.nav a.active {
    color: var(--primary-blue);
}

.nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-blue), var(--accent-teal));
    border-radius: 3px;
}

.btn-admin {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    color: white !important;
    padding: 10px 24px !important;
    border-radius: var(--radius-sm);
    font-weight: 600 !important;
}

.btn-admin:hover {
    transform: translateY(-2px);
}

.mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary-blue);
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    min-height: calc(100vh - 100px);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    z-index: 2;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-blue);
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 24px;
}

.badge i {
    font-size: 14px;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--black), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--gray-dark);
    margin-bottom: 40px;
    max-width: 600px;
}

.subtitle span {
    font-weight: 700;
    color: var(--primary-blue);
}

/* Download Card */
.download-card {
    background: white;
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-blue), var(--accent-teal), var(--secondary-purple));
}

.file-info {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
}

.file-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 36px;
}

.file-details h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 8px;
}

.file-size, .file-date {
    color: var(--gray-dark);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.security-badges {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--gray-light);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.badge-item i {
    color: var(--success);
}

.download-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.download-btn, .manual-btn {
    flex: 1;
    padding: 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: var(--transition);
}

.download-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    color: white;
}

.download-btn:hover {
    transform: translateY(-2px);
}

.manual-btn {
    background: white;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.manual-btn:hover {
    background: var(--gray-light);
}

.progress-container {
    background: var(--gray-light);
    border-radius: var(--radius-sm);
    padding: 20px;
}

.progress-label {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--black);
}

.progress-bar {
    height: 10px;
    background: var(--gray-medium);
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary-blue), var(--accent-teal));
    width: 0%;
    border-radius: 5px;
    transition: width 5s linear;
}

.trust-signals {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.trust-item {
    text-align: center;
    padding: 24px;
    background: white;
    border-radius: var(--radius);
    transition: var(--transition);
}

.trust-item:hover {
    transform: translateY(-5px);
}

.trust-item i {
    font-size: 36px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.trust-item h4 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--black);
}

.trust-item p {
    color: var(--gray-dark);
}

/* Hero Graphics */
.hero-graphics {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40%;
    height: 100%;
    pointer-events: none;
}

.graphic-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.graphic-circle.blue {
    width: 300px;
    height: 300px;
    background: var(--primary-blue);
    top: 20%;
    right: 10%;
}

.graphic-circle.purple {
    width: 200px;
    height: 200px;
    background: var(--secondary-purple);
    bottom: 20%;
    right: 30%;
}

.graphic-circle.teal {
    width: 150px;
    height: 150px;
    background: var(--accent-teal);
    top: 40%;
    right: 20%;
}

.shield-animation {
    position: absolute;
    top: 50%;
    right: 20%;
    transform: translateY(-50%);
    font-size: 200px;
    color: rgba(37, 99, 235, 0.05);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(10px); }
}

/* Security Section */
.security-section {
    padding: 80px 0;
}

.security-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 48px;
    color: var(--black);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.security-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

.security-card:hover {
    transform: translateY(-10px);
}

.card-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: white;
}

.card-icon.blue {
    background: linear-gradient(135deg, var(--primary-blue), var(--blue-light));
}

.card-icon.purple {
    background: linear-gradient(135deg, var(--secondary-purple), #a78bfa);
}

.card-icon.teal {
    background: linear-gradient(135deg, var(--accent-teal), #22d3ee);
}

.security-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--black);
}

.security-card p {
    color: var(--gray-dark);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--black);
    color: white;
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    margin-bottom: 32px;
}

.footer-logo i {
    font-size: 48px;
    color: var(--primary-blue);
    margin-bottom: 16px;
}

.footer-logo h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.footer-logo p {
    color: var(--gray-medium);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--gray-medium);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
}

.footer-copyright p {
    color: var(--gray-medium);
    margin-bottom: 8px;
}

.security-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--success) !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h2 {
        font-size: 2.8rem;
    }
    
    .hero-graphics {
        width: 30%;
    }
    
    .shield-animation {
        font-size: 150px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 40px 0;
    }
    
    .hero h2 {
        font-size: 2.2rem;
    }
    
    .hero-graphics {
        display: none;
    }
    
    .download-actions {
        flex-direction: column;
    }
    
    .trust-signals,
    .security-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .file-info {
        flex-direction: column;
        text-align: center;
    }
    
    .security-badges {
        justify-content: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .download-card {
        padding: 24px;
    }
    
    .file-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .file-details h3 {
        font-size: 24px;
    }
    
    .download-btn, .manual-btn {
        padding: 16px;
        font-size: 16px;
    }
}