:root {
    --primary-color: #1976d2;
    --primary-dark: #1565c0;
    --primary-light: #42a5f5;
    --secondary-color: #424242;
    --background-color: #f5f5f5;
    --card-background: #ffffff;
    --text-primary: #212121;
    --text-secondary: #757575;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    min-height: 100vh;
    color: var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    text-align: center;
    color: white;
    padding: 2rem 0;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 2.5rem;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 600;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.login-btn {
    position: absolute;
    top: 1rem;
    right: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
}

.login-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
    flex: 1;
}

.app-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: all var(--transition-speed);
    border: 2px solid transparent;
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-light);
}

.app-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.app-icon i {
    font-size: 1.5rem;
    color: white;
}

.app-info h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.app-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.footer {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    padding: 1.5rem 0;
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .logo i {
        font-size: 2rem;
    }

    .login-btn span {
        display: none;
    }

    .login-btn {
        padding: 0.5rem;
    }

    .apps-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .app-card {
        padding: 1rem;
    }

    .app-icon {
        width: 50px;
        height: 50px;
    }

    .app-icon i {
        font-size: 1.25rem;
    }
}